Claude Sonnet 5 vs Gemini 3.6 Flash — Price, Context, and Capability Compared
Claude Sonnet 5 vs Gemini 3.6 Flash: which should I use?
Claude Sonnet 5 costs 1.8× more per blended million tokens than Gemini 3.6 Flash. Gemini 3.6 Flash has the larger context window (1,000,000 tokens). Default to Gemini 3.6 Flash unless you specifically need Claude Sonnet 5's edge.
Spec comparison
| Claude Sonnet 5 | Gemini 3.6 Flash | |
|---|---|---|
| Price (input) | $3.00/M | $1.50/M ✓ |
| Price (output) | $15.00/M | $9.00/M ✓ |
| Blended price | $6.00/M | $3.38/M ✓ |
| Context window | 500,000 tokens | 1,000,000 tokens ✓ |
| Max output | 64,000 tokens | 64,000 tokens |
| Modalities | text, vision | text, vision, audio |
| Reasoning mode | Yes | Yes |
| Released | 2026-08 | 2026-06 |
| Speed | Not measured | 114 t/s |
Cost at scale (3:1 blended)
| Tokens / month | Claude Sonnet 5 | Gemini 3.6 Flash | Delta |
|---|---|---|---|
| 1,000,000 | $6.00 | $3.38 | $2.63 (1.8×) |
| 10,000,000 | $60.00 | $33.75 | $26.25 (1.8×) |
| 100,000,000 | $600.00 | $337.50 | $262.50 (1.8×) |
Choose Claude Sonnet 5 if…
- ✓Frontier intelligence at Sonnet economics
- ✓Fast interactive coding performance
- ✓Reliable structured output and extended thinking
- ✓Production workloads that need near-Opus quality with better speed and cost.
Choose Gemini 3.6 Flash if…
- ✓Faster than Gemini 3.5 Flash
- ✓Top-tier coding and agentic performance for its price
- ✓1M-token context
- ✓Latency-sensitive coding and agentic tasks that still need a huge context window.
Run this exact matchup right now
Send the same prompt to Claude Sonnet 5 and Gemini 3.6 Flash side by side and see the outputs yourself.
Try Claude Sonnet 5 vs Gemini 3.6 Flash FreeFAQ
Is Claude Sonnet 5 cheaper than Gemini 3.6 Flash?
Gemini 3.6 Flash is cheaper, at $3.38 per million blended tokens vs $6.00 for Claude Sonnet 5.
Which has the bigger context window, Claude Sonnet 5 or Gemini 3.6 Flash?
Gemini 3.6 Flash has the larger context window: 1,000,000 tokens vs 500,000.
Can Claude Sonnet 5 replace Gemini 3.6 Flash for coding?
Both are viable for coding. Frontier intelligence at Sonnet economics (Claude Sonnet 5) vs Faster than Gemini 3.5 Flash (Gemini 3.6 Flash) — pick based on which strength matters more for your workload.
Neither of these? See Claude Sonnet 5 alternatives or Gemini 3.6 Flash alternatives.
Related
Pricing verified 2026-07-22. Specs verified 2026-08-08.