Compare DeepSeek V4 Pro and Gemini 3.7 Flash: Mathematical Rigor vs Hybrid Speed
DeepSeek V4 Pro vs Gemini 3.7 Flash: which should I use?
DeepSeek V4 Pro excels in pure mathematical logic and off-peak token economics ($0.55/$2.19 per million tokens), while Gemini 3.7 Flash combines sub-second hybrid reasoning with native audio and video understanding ($0.35/$1.05 per million tokens). Verified 2026-09-07.
Verified 2026-09-07
Where can you find price, speed, and task evidence for DeepSeek V4 Pro and Gemini 3.7 Flash?
Which tasks fit DeepSeek V4 Pro and Gemini 3.7 Flash?
Best-fit task signals from the published model strengths; this is not a substitute for a controlled benchmark.
| Fact | DeepSeek V4 Pro | Gemini 3.7 Flash |
|---|---|---|
| Best fit | Rigorous math, proofs, and hard algorithmic problems on a budget. | Production coding and agentic workflows that need strong capability, low latency, and long context. |
| Reasoning mode | Available | Available |
What does a Coding Agent workload cost with DeepSeek V4 Pro and Gemini 3.7 Flash?
Modeled for Coding Agent: 20,000 input + 2,000 output tokens per task, 1 turn. This is a workload model, not a provider quote.
| Fact | DeepSeek V4 Pro | Gemini 3.7 Flash |
|---|---|---|
| Coding Agent / task | $0.03 (modeled) | $0.02 (modeled) (winner) |
| Input / output rate | $1.32 / $3.96 per M | $0.75 / $3.75 per M |
How fast are DeepSeek V4 Pro and Gemini 3.7 Flash?
Only non-estimated benchmark results are shown as measured.
| Fact | DeepSeek V4 Pro | Gemini 3.7 Flash |
|---|---|---|
| Measured throughput | 68 tokens/s | Unavailable |
| Time to first token | 480 ms | Unavailable |
How compatible are DeepSeek V4 Pro and Gemini 3.7 Flash with APIs?
Provider-level wire-format and SDK facts; model-specific parameter differences may still apply.
| Fact | DeepSeek V4 Pro | Gemini 3.7 Flash |
|---|---|---|
| OpenAI SDK | Usable | Not drop-in |
| Request shape | OpenAI-compatible chat/completions; set model to a deepseek-* id and point base_url at api.deepseek.com. | contents/parts structure instead of messages; an OpenAI-compatible endpoint exists but only covers a subset of parameters. |
| Streaming | SSE (OpenAI delta) | SSE (Gemini streamGenerateContent) |
What are the privacy and retention policies for DeepSeek V4 Pro and Gemini 3.7 Flash?
Provider policy and residency facts from the verified provider registry. A missing retention policy is not treated as a guarantee.
| Fact | DeepSeek V4 Pro | Gemini 3.7 Flash |
|---|---|---|
| Provider says API data trains models | Unavailable | No |
| Published retention period | Unavailable | Unavailable |
| Data residency | Unavailable | Global by default; Vertex AI offers selectable regional endpoints |
How much effort does it take to migrate between DeepSeek V4 Pro and Gemini 3.7 Flash?
Direction is from each displayed model to the other. Effort is derived from provider compatibility and published parameter maps.
| Fact | DeepSeek V4 Pro | Gemini 3.7 Flash |
|---|---|---|
| Move DeepSeek V4 Pro → Gemini 3.7 Flash | code-change; 0 breaking parameter differences | Target: Gemini 3.7 Flash |
| Move Gemini 3.7 Flash → DeepSeek V4 Pro | Source: Gemini 3.7 Flash | config; 6 breaking parameter differences |
| Why | contents/parts structure instead of messages; an OpenAI-compatible endpoint exists but only covers a subset of parameters. | Keep the `openai` SDK; change `baseURL` and the API key. |
Exact-pair cross-provider decision guide. Verified 2026-09-02. These three sections are computed from dated scenarios; assumptions and unavailable joins are not observations.
Exact pair boundary: requested models are deepseek-v4-pro and gemini-3.7-flash. Provider, pricing, task, and rate-limit pages remain fact owners.
Current-version and rate-period identity resolver
Frozen scenario board. Formula / decision rule: current = requested ID resolves to effective snapshot ∧ lifecycle current ∧ rate-validity period covers observation Boundary: Current pair claims require both effective versions and applicable rate periods; aliases never inherit snapshot evidence.
| Frozen scenario | Joined fields and evidence | Output | State |
|---|---|---|---|
| V4 stable alias | pair=deepseek-v4-pro vs gemini-3.7-flash; surfaces=DeepSeek [email protected] / Gemini [email protected]; requested IDs=deepseek-v4-pro,gemini-3.7-flash; effective IDs=deepseek-v4-pro,gemini-3.7-flash; provider=DeepSeek; host=api.deepseek.com; requested=deepseek-v4; resolved=required; snapshot/lifecycle=required; rate period=linked | Unavailable — stable alias resolution and rate period are not joined | UNAVAILABLE — V4 identity unresolved |
| V4 dated snapshot | pair=deepseek-v4-pro vs gemini-3.7-flash; surfaces=DeepSeek [email protected] / Gemini [email protected]; requested IDs=deepseek-v4-pro,gemini-3.7-flash; effective IDs=deepseek-v4-pro,gemini-3.7-flash; requested/resolved=deepseek-v4-pro snapshot; snapshot date=required; lifecycle=required; rate validity=dated; host=exact | A pinned V4 snapshot may be compared only at its dated rate period. | CONDITIONAL — snapshot join required |
| Gemini 3.7 stable | pair=deepseek-v4-pro vs gemini-3.7-flash; surfaces=DeepSeek [email protected] / Gemini [email protected]; requested IDs=deepseek-v4-pro,gemini-3.7-flash; effective IDs=deepseek-v4-pro,gemini-3.7-flash; provider=Google; host=generativelanguage.googleapis.com; requested/resolved=gemini-3.7-flash; lifecycle=stable; rate period=required | Unavailable — effective stable response and applicable rate period are not observed | UNAVAILABLE — stable identity gap |
| Gemini preview | pair=deepseek-v4-pro vs gemini-3.7-flash; surfaces=DeepSeek [email protected] / Gemini [email protected]; requested IDs=deepseek-v4-pro,gemini-3.7-flash; effective IDs=deepseek-v4-pro,gemini-3.7-flash; requested=preview; resolved version=required; lifecycle=preview; host/region=required; rate period=required | Preview evidence cannot be promoted to stable production identity. | NOT COMPARABLE — preview lifecycle |
| shared gateway alias | pair=deepseek-v4-pro vs gemini-3.7-flash; surfaces=DeepSeek [email protected] / Gemini [email protected]; requested IDs=deepseek-v4-pro,gemini-3.7-flash; effective IDs=deepseek-v4-pro,gemini-3.7-flash; host=shared gateway; requested=latest; resolved ID/snapshot=unknown; provider/region=unknown; rate period=unknown | Block any current-pair verdict while the effective provider or version is unknown. | BLOCKED — alias unresolved |
| stale-rate fixture | pair=deepseek-v4-pro vs gemini-3.7-flash; surfaces=DeepSeek [email protected] / Gemini [email protected]; requested IDs=deepseek-v4-pro,gemini-3.7-flash; effective IDs=deepseek-v4-pro,gemini-3.7-flash; effective IDs=known; rate validity ended before observation; as_of=2026-09-02; pricing link=dated | Do not compute pair economics from an expired rate row; retain an unavailable state. | UNAVAILABLE — stale rate period |
Provenance: deepseek-v4-pro-vs-gemini-3-7-flash; first-party source Google Gemini 3.7 Flash documentation; surface verification date 2026-09-02. Missing joins fail closed.
Built-in/external tool equivalence matrix
Frozen scenario board. Formula / decision rule: equivalent = same dependency semantics ∧ request/response adapter tested ∧ artifact/citation/side-effect behavior joined Boundary: A named tool is not equivalent merely because both providers expose a similarly named feature.
| Frozen scenario | Joined fields and evidence | Output | State |
|---|---|---|---|
| search grounding | pair=deepseek-v4-pro vs gemini-3.7-flash; surfaces=DeepSeek [email protected] / Gemini [email protected]; requested IDs=deepseek-v4-pro,gemini-3.7-flash; effective IDs=deepseek-v4-pro,gemini-3.7-flash; exact model/host=required; native Google grounding vs external DeepSeek retrieval; citation fields=required; query hash=tool-001 | Require a tested adapter and source-ID comparison before calling search equivalent. | CONDITIONAL — adapter probe required |
| file retrieval | pair=deepseek-v4-pro vs gemini-3.7-flash; surfaces=DeepSeek [email protected] / Gemini [email protected]; requested IDs=deepseek-v4-pro,gemini-3.7-flash; effective IDs=deepseek-v4-pro,gemini-3.7-flash; tool owner=native/external; file/index artifact hash=required; request/response schema=required; replay=required | Unavailable — file identity and replay coverage are not joined | UNAVAILABLE — artifact provenance missing |
| code execution | pair=deepseek-v4-pro vs gemini-3.7-flash; surfaces=DeepSeek [email protected] / Gemini [email protected]; requested IDs=deepseek-v4-pro,gemini-3.7-flash; effective IDs=deepseek-v4-pro,gemini-3.7-flash; sandbox owner=required; exact model/host; stdout/stderr/artifact fields=required; side_effects=isolated | Unavailable — sandbox identity and output artifact schema are not paired | UNAVAILABLE — execution contract missing |
| strict extraction | pair=deepseek-v4-pro vs gemini-3.7-flash; surfaces=DeepSeek [email protected] / Gemini [email protected]; requested IDs=deepseek-v4-pro,gemini-3.7-flash; effective IDs=deepseek-v4-pro,gemini-3.7-flash; schema hash=tool-004; native structured output vs adapter; validation fields=required; result hash=required | Use an adapter only after field-level validation passes on both exact routes. | CONDITIONAL — schema probe required |
| computer-use preview | pair=deepseek-v4-pro vs gemini-3.7-flash; surfaces=DeepSeek [email protected] / Gemini [email protected]; requested IDs=deepseek-v4-pro,gemini-3.7-flash; effective IDs=deepseek-v4-pro,gemini-3.7-flash; lifecycle=preview; action/screenshot IDs=required; host/region=required; side_effect class=high | Preview computer-use behavior cannot be declared equivalent without a tested route. | BLOCKED — preview/side-effect risk |
| custom write-tool | pair=deepseek-v4-pro vs gemini-3.7-flash; surfaces=DeepSeek [email protected] / Gemini [email protected]; requested IDs=deepseek-v4-pro,gemini-3.7-flash; effective IDs=deepseek-v4-pro,gemini-3.7-flash; external tool owner=application; idempotency key=required; request/result schema=required; rollback=required | Require explicit adapter and rollback; no native-equivalence shortcut. | BLOCKED — unsafe without adapter |
Provenance: deepseek-v4-pro-vs-gemini-3-7-flash; first-party source Google Gemini API model documentation; surface verification date 2026-09-02. Missing joins fail closed.
Tool-agent canary promotion board
Frozen scenario board. Formula / decision rule: promote = matched hashes + sample floor + quality/tool/schema/latency gates + zero uncontained critical effects Boundary: Provider launch evidence is context only; promotion requires workload-owned observations and rollback readiness.
| Frozen scenario | Joined fields and evidence | Output | State |
|---|---|---|---|
| read-only research | pair=deepseek-v4-pro vs gemini-3.7-flash; surfaces=DeepSeek [email protected] / Gemini [email protected]; requested IDs=deepseek-v4-pro,gemini-3.7-flash; effective IDs=deepseek-v4-pro,gemini-3.7-flash; cohort=research; prompt/tool/config hashes=paired; citations=required; sample_floor=declared; side_effects=none | Unavailable — paired workload observations are missing | HOLD — canary not observed |
| repository edit | pair=deepseek-v4-pro vs gemini-3.7-flash; surfaces=DeepSeek [email protected] / Gemini [email protected]; requested IDs=deepseek-v4-pro,gemini-3.7-flash; effective IDs=deepseek-v4-pro,gemini-3.7-flash; cohort=repo; tool schema=paired; artifact/test hashes=required; rollback=required; attempt_cap=2 | Unavailable — candidate tool trace and rollback artifact are absent | HOLD — edit gate |
| schema extraction | pair=deepseek-v4-pro vs gemini-3.7-flash; surfaces=DeepSeek [email protected] / Gemini [email protected]; requested IDs=deepseek-v4-pro,gemini-3.7-flash; effective IDs=deepseek-v4-pro,gemini-3.7-flash; cohort=extract; schema hash=paired; field floor=declared; result hashes=required; rates=dated | Unavailable — paired schema acceptance denominator is missing | HOLD — extraction gate |
| multi-tool plan | pair=deepseek-v4-pro vs gemini-3.7-flash; surfaces=DeepSeek [email protected] / Gemini [email protected]; requested IDs=deepseek-v4-pro,gemini-3.7-flash; effective IDs=deepseek-v4-pro,gemini-3.7-flash; cohort=multi-tool; ordered tool IDs=required; prompt/config hashes=paired; side_effects=contained | Unavailable — ordered trace and side-effect audit are not joined | HOLD — topology evidence missing |
| computer-use task | pair=deepseek-v4-pro vs gemini-3.7-flash; surfaces=DeepSeek [email protected] / Gemini [email protected]; requested IDs=deepseek-v4-pro,gemini-3.7-flash; effective IDs=deepseek-v4-pro,gemini-3.7-flash; cohort=computer-use; preview lifecycle=explicit; screenshot/action IDs=required; human approval=required | Do not promote an uncontained computer-use candidate; require human approval. | BLOCKED — human gate |
| regression cohorts | pair=deepseek-v4-pro vs gemini-3.7-flash; surfaces=DeepSeek [email protected] / Gemini [email protected]; requested IDs=deepseek-v4-pro,gemini-3.7-flash; effective IDs=deepseek-v4-pro,gemini-3.7-flash; cohort=regression; baseline/candidate IDs=exact; minimum sample=required; rollback target=baseline | Promote only after every critical regression clears; otherwise keep baseline. | CONDITIONAL — regression sample required |
Provenance: deepseek-v4-pro-vs-gemini-3-7-flash; first-party source Google Gemini 3.7 Flash documentation; surface verification date 2026-09-02. Missing joins fail closed.
Method and limitations: every formula is deterministic and every assumption is labeled. Missing provider, host, alias, snapshot, version, effort, tool, modality, benchmark, workload, rate-period, timestamp, or result joins fail closed. Run this scenario →
Exact-pair decision guide · verified 2026-09-07
Exact pair boundary: DeepSeek / Google; model endpoint, thinking mode math flagship vs hybrid-reasoning fast workhorse, and pricing must join. Requested models are deepseek-v4-pro and gemini-3.7-flash. Provider, rate, pricing, and task pages remain fact owners.
Token pricing and off-peak schedule economic model
Frozen scenario board. Formula / deterministic rule: monthly_spend = peak_calls * rate_peak + off_peak_calls * rate_off_peak Boundary: Owns pricing differential modeling accounting for DeepSeek off-peak discounts.
| Frozen scenario | Pair, identity, host, surface, and evidence fields | Result | State |
|---|---|---|---|
| peak business hours query load | pair=deepseek-v4-pro vs gemini-3.7-flash; provider=DeepSeek / Google; hostA=api.deepseek.com; hostB=generativelanguage.googleapis.com; surfaceA=DeepSeek API; surfaceB=Google AI Studio / Vertex AI; requested/effective IDs=deepseek-v4-pro,gemini-3.7-flash; scenario=peak business hours query load; workload timing; DeepSeek spend; Gemini 3.7 Flash spend; cost difference; off-peak savings; financial winner; prompt/config/input/output/result/cache/checkpoint/artifact hashes=required; evidence=2026-09-07; measurement versus assumption=explicit | Unavailable — peak business hours query load is a frozen fixture pending exact identity, configuration, and denominator joins. | UNTESTED — assumption cannot establish a verdict |
| off-peak discounted batch load (DeepSeek discount) | pair=deepseek-v4-pro vs gemini-3.7-flash; provider=DeepSeek / Google; hostA=api.deepseek.com; hostB=generativelanguage.googleapis.com; surfaceA=DeepSeek API; surfaceB=Google AI Studio / Vertex AI; requested/effective IDs=deepseek-v4-pro,gemini-3.7-flash; scenario=off-peak discounted batch load (DeepSeek discount); workload timing; DeepSeek spend; Gemini 3.7 Flash spend; cost difference; off-peak savings; financial winner; prompt/config/input/output/result/cache/checkpoint/artifact hashes=required; evidence=2026-09-07; measurement versus assumption=explicit | Unavailable — off-peak discounted batch load (DeepSeek discount) is a frozen fixture pending exact identity, configuration, and denominator joins. | UNTESTED — assumption cannot establish a verdict |
| 50% prompt caching hit rate | pair=deepseek-v4-pro vs gemini-3.7-flash; provider=DeepSeek / Google; hostA=api.deepseek.com; hostB=generativelanguage.googleapis.com; surfaceA=DeepSeek API; surfaceB=Google AI Studio / Vertex AI; requested/effective IDs=deepseek-v4-pro,gemini-3.7-flash; scenario=50% prompt caching hit rate; workload timing; DeepSeek spend; Gemini 3.7 Flash spend; cost difference; off-peak savings; financial winner; prompt/config/input/output/result/cache/checkpoint/artifact hashes=required; evidence=2026-09-07; measurement versus assumption=explicit | Unavailable — 50% prompt caching hit rate is a frozen fixture pending exact identity, configuration, and denominator joins. | UNTESTED — assumption cannot establish a verdict |
| 100K automated reasoning queries | pair=deepseek-v4-pro vs gemini-3.7-flash; provider=DeepSeek / Google; hostA=api.deepseek.com; hostB=generativelanguage.googleapis.com; surfaceA=DeepSeek API; surfaceB=Google AI Studio / Vertex AI; requested/effective IDs=deepseek-v4-pro,gemini-3.7-flash; scenario=100K automated reasoning queries; workload timing; DeepSeek spend; Gemini 3.7 Flash spend; cost difference; off-peak savings; financial winner; prompt/config/input/output/result/cache/checkpoint/artifact hashes=required; evidence=2026-09-07; measurement versus assumption=explicit | Unavailable — 100K automated reasoning queries is a frozen fixture pending exact identity, configuration, and denominator joins. | UNTESTED — assumption cannot establish a verdict |
| rate limit quota saturation | pair=deepseek-v4-pro vs gemini-3.7-flash; provider=DeepSeek / Google; hostA=api.deepseek.com; hostB=generativelanguage.googleapis.com; surfaceA=DeepSeek API; surfaceB=Google AI Studio / Vertex AI; requested/effective IDs=deepseek-v4-pro,gemini-3.7-flash; scenario=rate limit quota saturation; workload timing; DeepSeek spend; Gemini 3.7 Flash spend; cost difference; off-peak savings; financial winner; prompt/config/input/output/result/cache/checkpoint/artifact hashes=required; evidence=2026-09-07; measurement versus assumption=explicit | Unavailable — rate limit quota saturation is a frozen fixture pending exact identity, configuration, and denominator joins. | UNTESTED — assumption cannot establish a verdict |
| unresolved billing currency conversion | pair=deepseek-v4-pro vs gemini-3.7-flash; provider=DeepSeek / Google; hostA=api.deepseek.com; hostB=generativelanguage.googleapis.com; surfaceA=DeepSeek API; surfaceB=Google AI Studio / Vertex AI; requested/effective IDs=deepseek-v4-pro,gemini-3.7-flash; scenario=unresolved billing currency conversion; workload timing; DeepSeek spend; Gemini 3.7 Flash spend; cost difference; off-peak savings; financial winner; prompt/config/input/output/result/cache/checkpoint/artifact hashes=required; evidence=2026-09-07; measurement versus assumption=explicit | Unavailable — unresolved billing currency conversion has no matched, dated bilateral observation. | FAIL CLOSED — manual, probe, or source evidence required |
First-party provenance: DeepSeek API pricing; verification date 2026-09-07. Missing or conflicting joins fail closed.
Multimodal admissibility gate and video understanding audit
Frozen scenario board. Formula / deterministic rule: admissible = (audio_or_video ? Gemini : Both) && (context <= 1M ? Both : Excluded) Boundary: Owns capability gating for multimodal and long-context workloads.
| Frozen scenario | Pair, identity, host, surface, and evidence fields | Result | State |
|---|---|---|---|
| text-only complex math proof (Both eligible) | pair=deepseek-v4-pro vs gemini-3.7-flash; provider=DeepSeek / Google; hostA=api.deepseek.com; hostB=generativelanguage.googleapis.com; surfaceA=DeepSeek API; surfaceB=Google AI Studio / Vertex AI; requested/effective IDs=deepseek-v4-pro,gemini-3.7-flash; scenario=text-only complex math proof (Both eligible); workload modality; input context; video/audio required; DeepSeek eligible; Gemini eligible; routing verdict; prompt/config/input/output/result/cache/checkpoint/artifact hashes=required; evidence=2026-09-07; measurement versus assumption=explicit | Unavailable — text-only complex math proof (Both eligible) is a frozen fixture pending exact identity, configuration, and denominator joins. | UNTESTED — assumption cannot establish a verdict |
| high-resolution technical diagram OCR (Both eligible) | pair=deepseek-v4-pro vs gemini-3.7-flash; provider=DeepSeek / Google; hostA=api.deepseek.com; hostB=generativelanguage.googleapis.com; surfaceA=DeepSeek API; surfaceB=Google AI Studio / Vertex AI; requested/effective IDs=deepseek-v4-pro,gemini-3.7-flash; scenario=high-resolution technical diagram OCR (Both eligible); workload modality; input context; video/audio required; DeepSeek eligible; Gemini eligible; routing verdict; prompt/config/input/output/result/cache/checkpoint/artifact hashes=required; evidence=2026-09-07; measurement versus assumption=explicit | Unavailable — high-resolution technical diagram OCR (Both eligible) is a frozen fixture pending exact identity, configuration, and denominator joins. | UNTESTED — assumption cannot establish a verdict |
| 15-minute video lecture analysis (Gemini required) | pair=deepseek-v4-pro vs gemini-3.7-flash; provider=DeepSeek / Google; hostA=api.deepseek.com; hostB=generativelanguage.googleapis.com; surfaceA=DeepSeek API; surfaceB=Google AI Studio / Vertex AI; requested/effective IDs=deepseek-v4-pro,gemini-3.7-flash; scenario=15-minute video lecture analysis (Gemini required); workload modality; input context; video/audio required; DeepSeek eligible; Gemini eligible; routing verdict; prompt/config/input/output/result/cache/checkpoint/artifact hashes=required; evidence=2026-09-07; measurement versus assumption=explicit | Unavailable — 15-minute video lecture analysis (Gemini required) is a frozen fixture pending exact identity, configuration, and denominator joins. | UNTESTED — assumption cannot establish a verdict |
| multimodal audio call transcription (Gemini required) | pair=deepseek-v4-pro vs gemini-3.7-flash; provider=DeepSeek / Google; hostA=api.deepseek.com; hostB=generativelanguage.googleapis.com; surfaceA=DeepSeek API; surfaceB=Google AI Studio / Vertex AI; requested/effective IDs=deepseek-v4-pro,gemini-3.7-flash; scenario=multimodal audio call transcription (Gemini required); workload modality; input context; video/audio required; DeepSeek eligible; Gemini eligible; routing verdict; prompt/config/input/output/result/cache/checkpoint/artifact hashes=required; evidence=2026-09-07; measurement versus assumption=explicit | Unavailable — multimodal audio call transcription (Gemini required) is a frozen fixture pending exact identity, configuration, and denominator joins. | UNTESTED — assumption cannot establish a verdict |
| 1M full context text saturation test | pair=deepseek-v4-pro vs gemini-3.7-flash; provider=DeepSeek / Google; hostA=api.deepseek.com; hostB=generativelanguage.googleapis.com; surfaceA=DeepSeek API; surfaceB=Google AI Studio / Vertex AI; requested/effective IDs=deepseek-v4-pro,gemini-3.7-flash; scenario=1M full context text saturation test; workload modality; input context; video/audio required; DeepSeek eligible; Gemini eligible; routing verdict; prompt/config/input/output/result/cache/checkpoint/artifact hashes=required; evidence=2026-09-07; measurement versus assumption=explicit | Unavailable — 1M full context text saturation test is a frozen fixture pending exact identity, configuration, and denominator joins. | UNTESTED — assumption cannot establish a verdict |
| unsupported media payload format | pair=deepseek-v4-pro vs gemini-3.7-flash; provider=DeepSeek / Google; hostA=api.deepseek.com; hostB=generativelanguage.googleapis.com; surfaceA=DeepSeek API; surfaceB=Google AI Studio / Vertex AI; requested/effective IDs=deepseek-v4-pro,gemini-3.7-flash; scenario=unsupported media payload format; workload modality; input context; video/audio required; DeepSeek eligible; Gemini eligible; routing verdict; prompt/config/input/output/result/cache/checkpoint/artifact hashes=required; evidence=2026-09-07; measurement versus assumption=explicit | Unavailable — unsupported media payload format has no matched, dated bilateral observation. | FAIL CLOSED — manual, probe, or source evidence required |
First-party provenance: Google Gemini API model documentation; verification date 2026-09-07. Missing or conflicting joins fail closed.
Turnaround time latency and hybrid reasoning responsiveness SLA
Frozen scenario board. Formula / deterministic rule: turnaround = ttft + (tokens_out / tps); Flash hybrid speed vs DeepSeek thinking tokens Boundary: Owns responsiveness benchmarks and interactive user experience benefits.
| Frozen scenario | Pair, identity, host, surface, and evidence fields | Result | State |
|---|---|---|---|
| real-time chat autocomplete (<200ms) | pair=deepseek-v4-pro vs gemini-3.7-flash; provider=DeepSeek / Google; hostA=api.deepseek.com; hostB=generativelanguage.googleapis.com; surfaceA=DeepSeek API; surfaceB=Google AI Studio / Vertex AI; requested/effective IDs=deepseek-v4-pro,gemini-3.7-flash; scenario=real-time chat autocomplete (<200ms); task; response SLA; DeepSeek latency; Gemini 3.7 Flash latency; SLA compliance; responsiveness winner; prompt/config/input/output/result/cache/checkpoint/artifact hashes=required; evidence=2026-09-07; measurement versus assumption=explicit | Unavailable — real-time chat autocomplete (<200ms) is a frozen fixture pending exact identity, configuration, and denominator joins. | UNTESTED — assumption cannot establish a verdict |
| interactive coding assistant reply (<500ms) | pair=deepseek-v4-pro vs gemini-3.7-flash; provider=DeepSeek / Google; hostA=api.deepseek.com; hostB=generativelanguage.googleapis.com; surfaceA=DeepSeek API; surfaceB=Google AI Studio / Vertex AI; requested/effective IDs=deepseek-v4-pro,gemini-3.7-flash; scenario=interactive coding assistant reply (<500ms); task; response SLA; DeepSeek latency; Gemini 3.7 Flash latency; SLA compliance; responsiveness winner; prompt/config/input/output/result/cache/checkpoint/artifact hashes=required; evidence=2026-09-07; measurement versus assumption=explicit | Unavailable — interactive coding assistant reply (<500ms) is a frozen fixture pending exact identity, configuration, and denominator joins. | UNTESTED — assumption cannot establish a verdict |
| deep mathematical theorem proof | pair=deepseek-v4-pro vs gemini-3.7-flash; provider=DeepSeek / Google; hostA=api.deepseek.com; hostB=generativelanguage.googleapis.com; surfaceA=DeepSeek API; surfaceB=Google AI Studio / Vertex AI; requested/effective IDs=deepseek-v4-pro,gemini-3.7-flash; scenario=deep mathematical theorem proof; task; response SLA; DeepSeek latency; Gemini 3.7 Flash latency; SLA compliance; responsiveness winner; prompt/config/input/output/result/cache/checkpoint/artifact hashes=required; evidence=2026-09-07; measurement versus assumption=explicit | Unavailable — deep mathematical theorem proof is a frozen fixture pending exact identity, configuration, and denominator joins. | UNTESTED — assumption cannot establish a verdict |
| batch classification queue | pair=deepseek-v4-pro vs gemini-3.7-flash; provider=DeepSeek / Google; hostA=api.deepseek.com; hostB=generativelanguage.googleapis.com; surfaceA=DeepSeek API; surfaceB=Google AI Studio / Vertex AI; requested/effective IDs=deepseek-v4-pro,gemini-3.7-flash; scenario=batch classification queue; task; response SLA; DeepSeek latency; Gemini 3.7 Flash latency; SLA compliance; responsiveness winner; prompt/config/input/output/result/cache/checkpoint/artifact hashes=required; evidence=2026-09-07; measurement versus assumption=explicit | Unavailable — batch classification queue is a frozen fixture pending exact identity, configuration, and denominator joins. | UNTESTED — assumption cannot establish a verdict |
| concurrency contention latency spike | pair=deepseek-v4-pro vs gemini-3.7-flash; provider=DeepSeek / Google; hostA=api.deepseek.com; hostB=generativelanguage.googleapis.com; surfaceA=DeepSeek API; surfaceB=Google AI Studio / Vertex AI; requested/effective IDs=deepseek-v4-pro,gemini-3.7-flash; scenario=concurrency contention latency spike; task; response SLA; DeepSeek latency; Gemini 3.7 Flash latency; SLA compliance; responsiveness winner; prompt/config/input/output/result/cache/checkpoint/artifact hashes=required; evidence=2026-09-07; measurement versus assumption=explicit | Unavailable — concurrency contention latency spike is a frozen fixture pending exact identity, configuration, and denominator joins. | UNTESTED — assumption cannot establish a verdict |
| unmeasured speed fixture | pair=deepseek-v4-pro vs gemini-3.7-flash; provider=DeepSeek / Google; hostA=api.deepseek.com; hostB=generativelanguage.googleapis.com; surfaceA=DeepSeek API; surfaceB=Google AI Studio / Vertex AI; requested/effective IDs=deepseek-v4-pro,gemini-3.7-flash; scenario=unmeasured speed fixture; task; response SLA; DeepSeek latency; Gemini 3.7 Flash latency; SLA compliance; responsiveness winner; prompt/config/input/output/result/cache/checkpoint/artifact hashes=required; evidence=2026-09-07; measurement versus assumption=explicit | Unavailable — unmeasured speed fixture is a frozen fixture pending exact identity, configuration, and denominator joins. | UNTESTED — assumption cannot establish a verdict |
First-party provenance: All AI Ask measured speed dataset; verification date 2026-09-07. Missing or conflicting joins fail closed.
Method and limitations: formulas are deterministic; observed and assumed inputs are labeled; no missing provider, host, account, region, realm, alias, snapshot, revision, weight, artifact, control, tool, modality, workload, rate-period, timestamp, or result is transferred. Run this scenario →
How do DeepSeek V4 Pro and Gemini 3.7 Flash compare on specs?
| DeepSeek V4 Pro | Gemini 3.7 Flash | |
|---|---|---|
| Price (input) | $1.32/M | $0.75/M ✓ |
| Price (output) | $3.96/M | $3.75/M ✓ |
| Blended price | $1.98/M | $1.50/M ✓ |
| Context window | 1,000,000 tokens | 1,048,576 tokens ✓ |
| Max output | 384,000 tokens ✓ | 65,536 tokens |
| Modalities | text | text, vision, audio |
| Reasoning mode | Yes | Yes |
| Released | 2026-05 | 2026-08 |
| Speed | 68 t/s | Not measured |
How much do DeepSeek V4 Pro and Gemini 3.7 Flash cost at scale?
| Tokens / month | DeepSeek V4 Pro | Gemini 3.7 Flash | Delta |
|---|---|---|---|
| 1,000,000 | $1.98 | $1.50 | $0.48 (1.3×) |
| 10,000,000 | $19.80 | $15.00 | $4.80 (1.3×) |
| 100,000,000 | $198.00 | $150.00 | $48.00 (1.3×) |
Choose DeepSeek V4 Pro if…
- ✓Thinking mode with visible chain-of-thought
- ✓Frontier-level math and competition coding
- ✓Still far cheaper than closed frontier models
- ✓Rigorous math, proofs, and hard algorithmic problems on a budget.
Choose Gemini 3.7 Flash if…
- ✓Google’s most intelligent Flash workhorse
- ✓Tunable thinking for coding and agents
- ✓1M-token context with built-in tools
- ✓Production coding and agentic workflows that need strong capability, low latency, and long context.
Run this exact matchup right now
Send the same prompt to DeepSeek V4 Pro and Gemini 3.7 Flash side by side and see the outputs yourself.
Try DeepSeek V4 Pro vs Gemini 3.7 Flash FreeWhat are common questions about DeepSeek V4 Pro and Gemini 3.7 Flash?
Is DeepSeek V4 Pro cheaper than Gemini 3.7 Flash?
Gemini 3.7 Flash is cheaper, at $1.50 per million blended tokens vs $1.98 for DeepSeek V4 Pro.
Which has the bigger context window, DeepSeek V4 Pro or Gemini 3.7 Flash?
Gemini 3.7 Flash has the larger context window: 1,048,576 tokens vs 1,000,000.
Can DeepSeek V4 Pro replace Gemini 3.7 Flash for coding?
Both are viable for coding. Thinking mode with visible chain-of-thought (DeepSeek V4 Pro) vs Google’s most intelligent Flash workhorse (Gemini 3.7 Flash) — pick based on which strength matters more for your workload.
Neither of these? See DeepSeek V4 Pro alternatives or Gemini 3.7 Flash alternatives.
What related comparisons help choose between DeepSeek V4 Pro and Gemini 3.7 Flash?
DeepSeek V4 Pro pricingGemini 3.7 Flash pricingvs Claude Opus 4.8vs Claude Opus 5.5vs Claude Sonnet 5vs Gemini 3.1 ProPremium model tests
Pricing verified 2026-08-14. Specs verified 2026-08-14.