Claude 3.7 Sonnet Turbo vs o3 Vision: which model should you choose?
We compared Claude 3.7 Sonnet Turbo and o3 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
o3 Vision
o3 Vision is a multimodal model from OpenAI. It offers a 1,000,000-token context window, costs $15.24 per million input tokens and $65.25 per million output tokens, and averages 81.8 across the index's benchmark suite.
- Input
- $15.24 / 1M
- Output
- $65.25 / 1M
- Context
- 1,000,000
- Avg score
- 81.8
- Open weights
- No
Specification comparison
| Spec | Claude 3.7 Sonnet Turbo | o3 Vision | Edge |
|---|---|---|---|
| Input price / 1M | $15.56 | $15.24 | B |
| Output price / 1M | $63.75 | $65.25 | A |
| Context window | 200,000 | 1,000,000 | B |
| Max output | 16,384 | 8,192 | A |
| Average score | 82.3 | 81.8 | A |
| Arena Elo | 1458.8 | 1436.5 | A |
| Open weights | No | No | Tie |
Benchmark comparison
Claude 3.7 Sonnet Turbo wins 8, o3 Vision wins 4, and 0 benchmarks are tied. The table shows the modelled score for each model and the gap.
| Benchmark | Claude 3.7 Sonnet Turbo | o3 Vision | Gap | Winner |
|---|---|---|---|---|
| MMLU-Pro | 82.1 | 83.6 | 1.5 | o3 Vision |
| GPQA Diamond | 79.7 | 77.8 | 1.9 | Claude 3.7 Sonnet Turbo |
| SWE-bench Verified | 73.9 | 71.8 | 2.1 | Claude 3.7 Sonnet Turbo |
| HumanEval | 87.6 | 85.6 | 2.0 | Claude 3.7 Sonnet Turbo |
| MATH-500 | 86.8 | 84.4 | 2.4 | Claude 3.7 Sonnet Turbo |
| AIME 2025 | 81.4 | 82.4 | 1.0 | o3 Vision |
| LiveCodeBench | 75.5 | 73.7 | 1.8 | Claude 3.7 Sonnet Turbo |
| IFEval | 87.4 | 89.3 | 1.9 | o3 Vision |
| TruthfulQA | 82.6 | 85.8 | 3.2 | o3 Vision |
| HellaSwag | 91.0 | 89.7 | 1.3 | Claude 3.7 Sonnet Turbo |
| MMMU | 77.6 | 75.7 | 1.9 | Claude 3.7 Sonnet Turbo |
| Arena Elo | 1458.8 | 1436.5 | 22.3 | 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 o3 Vision costs about $27.74. Claude 3.7 Sonnet Turbo is roughly 0% cheaper than o3 Vision. At high volume, that gap compounds quickly, so price should carry real weight unless the quality difference is decisive.
o3 Vision has the larger context window at 1,000,000 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 8, o3 Vision wins 4, and 0 are tied. On the index average, Claude 3.7 Sonnet Turbo leads o3 Vision by 0.5 points (82.3 versus 81.8).
The price picture favours Claude 3.7 Sonnet Turbo. The context picture favours o3 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.
- You need the larger 16,384-token output limit.
Choose o3 Vision if
- You need the larger 1,000,000-token context window.
FAQ
Is Claude 3.7 Sonnet Turbo better than o3 Vision?
On the index average, Claude 3.7 Sonnet Turbo leads o3 Vision by 0.5 points (82.3 versus 81.8). The better choice depends on price, context and your task. Claude 3.7 Sonnet Turbo wins 8 benchmarks, o3 Vision wins 4.
Which is cheaper, Claude 3.7 Sonnet Turbo or o3 Vision?
Claude 3.7 Sonnet Turbo is cheaper on a blended 3:1 basis at about $27.61 per million tokens, versus $27.74 for o3 Vision.
Which has the larger context window?
o3 Vision has the larger context window at 1,000,000 tokens. Claude 3.7 Sonnet Turbo has 200,000 tokens.
Are these models open weights?
Claude 3.7 Sonnet Turbo is proprietary; o3 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.