Gemini 3.1 Pro vs Grok 4.7 — Price, Context, and Capability Compared
Gemini 3.1 Pro vs Grok 4.7: which should I use?
Gemini 3.1 Pro costs 1.5× more per blended million tokens than Grok 4.7. Gemini 3.1 Pro has the larger context window (2,000,000 tokens). Default to Grok 4.7 unless you specifically need Gemini 3.1 Pro's edge.
Where can you find price, speed, and task evidence for Gemini 3.1 Pro and Grok 4.7?
Which tasks fit Gemini 3.1 Pro and Grok 4.7?
Best-fit task signals from the published model strengths; this is not a substitute for a controlled benchmark.
| Fact | Gemini 3.1 Pro | Grok 4.7 |
|---|---|---|
| Best fit | Whole-codebase, whole-document, or long-video analysis in a single request. | Long-running coding and knowledge work where 4.6 runs out of steam. |
| Reasoning mode | Available | Available |
What does a Coding Agent workload cost with Gemini 3.1 Pro and Grok 4.7?
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 | Gemini 3.1 Pro | Grok 4.7 |
|---|---|---|
| Coding Agent / task | $0.06 (modeled) | $0.05 (modeled) (winner) |
| Input / output rate | $2.00 / $12.00 per M | $2.00 / $6.00 per M |
How fast are Gemini 3.1 Pro and Grok 4.7?
Only non-estimated benchmark results are shown as measured.
| Fact | Gemini 3.1 Pro | Grok 4.7 |
|---|---|---|
| Measured throughput | 55 tokens/s | Unavailable |
| Time to first token | 420 ms | Unavailable |
How compatible are Gemini 3.1 Pro and Grok 4.7 with APIs?
Provider-level wire-format and SDK facts; model-specific parameter differences may still apply.
| Fact | Gemini 3.1 Pro | Grok 4.7 |
|---|---|---|
| OpenAI SDK | Not drop-in | Usable |
| Request shape | contents/parts structure instead of messages; an OpenAI-compatible endpoint exists but only covers a subset of parameters. | Full OpenAI chat/completions compatibility — point the openai SDK at api.x.ai and it works unmodified. |
| Streaming | SSE (Gemini streamGenerateContent) | SSE (OpenAI delta) |
What are the privacy and retention policies for Gemini 3.1 Pro and Grok 4.7?
Provider policy and residency facts from the verified provider registry. A missing retention policy is not treated as a guarantee.
| Fact | Gemini 3.1 Pro | Grok 4.7 |
|---|---|---|
| Provider says API data trains models | No | Unavailable |
| Published retention period | Unavailable | Unavailable |
| Data residency | Global by default; Vertex AI offers selectable regional endpoints | Unavailable |
How much effort does it take to migrate between Gemini 3.1 Pro and Grok 4.7?
Direction is from each displayed model to the other. Effort is derived from provider compatibility and published parameter maps.
| Fact | Gemini 3.1 Pro | Grok 4.7 |
|---|---|---|
| Move Gemini 3.1 Pro → Grok 4.7 | config; 2 breaking parameter differences | Target: Grok 4.7 |
| Move Grok 4.7 → Gemini 3.1 Pro | Source: Grok 4.7 | code-change; 1 breaking parameter difference |
| Why | Keep the `openai` SDK; change `baseURL` and the API key. | contents/parts structure instead of messages; an OpenAI-compatible endpoint exists but only covers a subset of parameters. |
How do Gemini 3.1 Pro and Grok 4.7 compare on specs?
| Gemini 3.1 Pro | Grok 4.7 | |
|---|---|---|
| Price (input) | $2.00/M | $2.00/M |
| Price (output) | $12.00/M | $6.00/M ✓ |
| Blended price | $4.50/M | $3.00/M ✓ |
| Context window | 2,000,000 tokens ✓ | 500,000 tokens |
| Max output | 64,000 tokens | 64,000 tokens |
| Modalities | text, vision, audio | text, vision |
| Reasoning mode | Yes | Yes |
| Released | 2026-02 | 2026-09 |
| Speed | 55 t/s | Not measured |
How much do Gemini 3.1 Pro and Grok 4.7 cost at scale?
| Tokens / month | Gemini 3.1 Pro | Grok 4.7 | Delta |
|---|---|---|---|
| 1,000,000 | $4.50 | $3.00 | $1.50 (1.5×) |
| 10,000,000 | $45.00 | $30.00 | $15.00 (1.5×) |
| 100,000,000 | $450.00 | $300.00 | $150.00 (1.5×) |
Choose Gemini 3.1 Pro if…
- ✓Largest context window of any current model (2M tokens)
- ✓Native audio and video understanding
- ✓Google Search grounding
- ✓Whole-codebase, whole-document, or long-video analysis in a single request.
Choose Grok 4.7 if…
- ✓xAI flagship for multi-hour coding on a larger base model
- ✓Configurable reasoning effort up to xhigh
- ✓Same $2/$6 pricing as Grok 4.6
- ✓Long-running coding and knowledge work where 4.6 runs out of steam.
Run this exact matchup right now
Send the same prompt to Gemini 3.1 Pro and Grok 4.7 side by side and see the outputs yourself.
Try Gemini 3.1 Pro vs Grok 4.7 FreeWhat are common questions about Gemini 3.1 Pro and Grok 4.7?
Is Gemini 3.1 Pro cheaper than Grok 4.7?
Grok 4.7 is cheaper, at $3.00 per million blended tokens vs $4.50 for Gemini 3.1 Pro.
Which has the bigger context window, Gemini 3.1 Pro or Grok 4.7?
Gemini 3.1 Pro has the larger context window: 2,000,000 tokens vs 500,000.
Can Gemini 3.1 Pro replace Grok 4.7 for coding?
Both are viable for coding. Largest context window of any current model (2M tokens) (Gemini 3.1 Pro) vs xAI flagship for multi-hour coding on a larger base model (Grok 4.7) — pick based on which strength matters more for your workload.
Neither of these? See Gemini 3.1 Pro alternatives or Grok 4.7 alternatives.
What related comparisons help choose between Gemini 3.1 Pro and Grok 4.7?
Pricing verified 2026-04-06. Specs verified 2026-08-14.