Claude 3.7 Sonnet Turbo vs Gemini 3 Flash Vision: which model should you choose?
We compared Claude 3.7 Sonnet Turbo and Gemini 3 Flash Vision on price, context window and 12 benchmarks. Claude 3.7 Sonnet Turbo has the stronger average benchmark score; Claude 3.7 Sonnet Turbo is cheaper on a blended 3:1 basis.
Claude 3.7 Sonnet Turbo
Claude 3.7 Sonnet Turbo is a multimodal model from Anthropic. It offers a 200,000-token context window, costs $15.56 per million input tokens and $63.75 per million output tokens, and averages 82.3 across the index's benchmark suite.
- Input
- $15.56 / 1M
- Output
- $63.75 / 1M
- Context
- 200,000
- Avg score
- 82.3
- Open weights
- No
Gemini 3 Flash Vision
Gemini 3 Flash Vision is a multimodal model from Google DeepMind. It offers a 400,000-token context window, costs $15.06 per million input tokens and $82.14 per million output tokens, and averages 81.9 across the index's benchmark suite.
- Input
- $15.06 / 1M
- Output
- $82.14 / 1M
- Context
- 400,000
- Avg score
- 81.9
- Open weights
- No
Specification comparison
| Spec | Claude 3.7 Sonnet Turbo | Gemini 3 Flash Vision | Edge |
|---|---|---|---|
| Input price / 1M | $15.56 | $15.06 | B |
| Output price / 1M | $63.75 | $82.14 | A |
| Context window | 200,000 | 400,000 | B |
| Max output | 16,384 | 32,768 | B |
| Average score | 82.3 | 81.9 | A |
| Arena Elo | 1458.8 | 1430.3 | A |
| Open weights | No | No | Tie |
Benchmark comparison
Claude 3.7 Sonnet Turbo wins 7, Gemini 3 Flash Vision wins 5, and 0 benchmarks are tied. The table shows the modelled score for each model and the gap.
| Benchmark | Claude 3.7 Sonnet Turbo | Gemini 3 Flash Vision | Gap | Winner |
|---|---|---|---|---|
| MMLU-Pro | 82.1 | 81.8 | 0.3 | Claude 3.7 Sonnet Turbo |
| GPQA Diamond | 79.7 | 75.7 | 4.0 | Claude 3.7 Sonnet Turbo |
| SWE-bench Verified | 73.9 | 71.4 | 2.5 | Claude 3.7 Sonnet Turbo |
| HumanEval | 87.6 | 84.5 | 3.1 | Claude 3.7 Sonnet Turbo |
| MATH-500 | 86.8 | 87.5 | 0.7 | Gemini 3 Flash Vision |
| AIME 2025 | 81.4 | 82.4 | 1.0 | Gemini 3 Flash Vision |
| LiveCodeBench | 75.5 | 73.2 | 2.3 | Claude 3.7 Sonnet Turbo |
| IFEval | 87.4 | 86.9 | 0.5 | Claude 3.7 Sonnet Turbo |
| TruthfulQA | 82.6 | 85.5 | 2.9 | Gemini 3 Flash Vision |
| HellaSwag | 91.0 | 91.5 | 0.5 | Gemini 3 Flash Vision |
| MMMU | 77.6 | 80.3 | 2.7 | Gemini 3 Flash Vision |
| Arena Elo | 1458.8 | 1430.3 | 28.5 | Claude 3.7 Sonnet Turbo |
Price analysis
On a blended 3:1 input-to-output basis, Claude 3.7 Sonnet Turbo costs about $27.61 per million tokens and Gemini 3 Flash Vision costs about $31.83. Claude 3.7 Sonnet Turbo is roughly 13% cheaper than Gemini 3 Flash Vision. At high volume, that gap compounds quickly, so price should carry real weight unless the quality difference is decisive.
Gemini 3 Flash Vision has the larger context window at 400,000 tokens, compared with 200,000 for Claude 3.7 Sonnet Turbo. That matters for long documents, large codebases and multi-step agent traces.
Verdict
Across 12 shared benchmarks, Claude 3.7 Sonnet Turbo wins 7, Gemini 3 Flash Vision wins 5, and 0 are tied. On the index average, Claude 3.7 Sonnet Turbo leads Gemini 3 Flash Vision by 0.4 points (82.3 versus 81.9).
The price picture favours Claude 3.7 Sonnet Turbo. The context picture favours Gemini 3 Flash Vision. Those two dimensions often matter more than a few benchmark points once a model is good enough for the task.
If you need a single default, start with Claude 3.7 Sonnet Turbo for quality-sensitive work, and check whether its price holds at your expected volume before committing.
Choose Claude 3.7 Sonnet Turbo if
- You want the higher average benchmark score in this index.
- Unit cost matters and you want the cheaper blended price.
- The workload needs multi-step reasoning.
Choose Gemini 3 Flash Vision if
- You need the larger 400,000-token context window.
- You need the larger 32,768-token output limit.
FAQ
Is Claude 3.7 Sonnet Turbo better than Gemini 3 Flash Vision?
On the index average, Claude 3.7 Sonnet Turbo leads Gemini 3 Flash Vision by 0.4 points (82.3 versus 81.9). The better choice depends on price, context and your task. Claude 3.7 Sonnet Turbo wins 7 benchmarks, Gemini 3 Flash Vision wins 5.
Which is cheaper, Claude 3.7 Sonnet Turbo or Gemini 3 Flash Vision?
Claude 3.7 Sonnet Turbo is cheaper on a blended 3:1 basis at about $27.61 per million tokens, versus $31.83 for Gemini 3 Flash Vision.
Which has the larger context window?
Gemini 3 Flash Vision has the larger context window at 400,000 tokens. Claude 3.7 Sonnet Turbo has 200,000 tokens.
Are these models open weights?
Claude 3.7 Sonnet Turbo is proprietary; Gemini 3 Flash Vision is proprietary.
Which should I choose for production?
If you need a single default, start with Claude 3.7 Sonnet Turbo for quality-sensitive work, and check whether its price holds at your expected volume before committing.