Claude 3.7 Sonnet Max vs Claude 3.7 Sonnet Reasoning: which model should you choose?
We compared Claude 3.7 Sonnet Max and Claude 3.7 Sonnet Reasoning on price, context window and 12 benchmarks. Claude 3.7 Sonnet Max and Claude 3.7 Sonnet Reasoning are effectively tied on the index average; Claude 3.7 Sonnet Reasoning is cheaper on a blended 3:1 basis.
Claude 3.7 Sonnet Max
Claude 3.7 Sonnet Max is a frontier model from Anthropic. It offers a 128,000-token context window, costs $16.88 per million input tokens and $83.20 per million output tokens, and averages 83.7 across the index's benchmark suite.
- Input
- $16.88 / 1M
- Output
- $83.20 / 1M
- Context
- 128,000
- Avg score
- 83.7
- Open weights
- No
Claude 3.7 Sonnet Reasoning
Claude 3.7 Sonnet Reasoning is a frontier model from Anthropic. It offers a 128,000-token context window, costs $16.30 per million input tokens and $77.62 per million output tokens, and averages 83.7 across the index's benchmark suite.
- Input
- $16.30 / 1M
- Output
- $77.62 / 1M
- Context
- 128,000
- Avg score
- 83.7
- Open weights
- No
Specification comparison
| Spec | Claude 3.7 Sonnet Max | Claude 3.7 Sonnet Reasoning | Edge |
|---|---|---|---|
| Input price / 1M | $16.88 | $16.30 | B |
| Output price / 1M | $83.20 | $77.62 | B |
| Context window | 128,000 | 128,000 | Tie |
| Max output | 32,768 | 128,000 | B |
| Average score | 83.7 | 83.7 | Tie |
| Arena Elo | 1461.6 | 1464.4 | B |
| Open weights | No | No | Tie |
Benchmark comparison
Claude 3.7 Sonnet Max wins 5, Claude 3.7 Sonnet Reasoning wins 7, and 0 benchmarks are tied. The table shows the modelled score for each model and the gap.
| Benchmark | Claude 3.7 Sonnet Max | Claude 3.7 Sonnet Reasoning | Gap | Winner |
|---|---|---|---|---|
| MMLU-Pro | 86.0 | 86.4 | 0.4 | Claude 3.7 Sonnet Reasoning |
| GPQA Diamond | 76.8 | 81.3 | 4.5 | Claude 3.7 Sonnet Reasoning |
| SWE-bench Verified | 76.1 | 71.0 | 5.1 | Claude 3.7 Sonnet Max |
| HumanEval | 90.9 | 89.2 | 1.7 | Claude 3.7 Sonnet Max |
| MATH-500 | 87.2 | 90.3 | 3.1 | Claude 3.7 Sonnet Reasoning |
| AIME 2025 | 80.7 | 79.8 | 0.9 | Claude 3.7 Sonnet Max |
| LiveCodeBench | 78.1 | 79.6 | 1.5 | Claude 3.7 Sonnet Reasoning |
| IFEval | 90.0 | 90.1 | 0.1 | Claude 3.7 Sonnet Reasoning |
| TruthfulQA | 84.7 | 86.2 | 1.5 | Claude 3.7 Sonnet Reasoning |
| HellaSwag | 91.2 | 90.4 | 0.8 | Claude 3.7 Sonnet Max |
| MMMU | 78.8 | 76.5 | 2.3 | Claude 3.7 Sonnet Max |
| Arena Elo | 1461.6 | 1464.4 | 2.8 | Claude 3.7 Sonnet Reasoning |
Price analysis
On a blended 3:1 input-to-output basis, Claude 3.7 Sonnet Max costs about $33.46 per million tokens and Claude 3.7 Sonnet Reasoning costs about $31.63. Claude 3.7 Sonnet Reasoning is roughly 5% cheaper than Claude 3.7 Sonnet Max. At high volume, that gap compounds quickly, so price should carry real weight unless the quality difference is decisive.
Both models list a 128,000-token context window. That is enough for long documents, large codebases and multi-step agent traces.
Verdict
Across 12 shared benchmarks, Claude 3.7 Sonnet Max wins 5, Claude 3.7 Sonnet Reasoning wins 7, and 0 are tied. The two models are effectively tied on the index average at 83.7.
The price picture favours Claude 3.7 Sonnet Reasoning. The context picture is effectively a tie. 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 Reasoning if cost is the constraint and Claude 3.7 Sonnet Max if context is the constraint. Test both on a sample of your own traffic before committing.
Choose Claude 3.7 Sonnet Max if
- You prefer Anthropic's tooling or already use it.
Choose Claude 3.7 Sonnet Reasoning if
- Unit cost matters and you want the cheaper blended price.
- You need the larger 128,000-token output limit.
FAQ
Is Claude 3.7 Sonnet Max better than Claude 3.7 Sonnet Reasoning?
The two models are effectively tied on the index average at 83.7. The better choice depends on price, context and your task. Claude 3.7 Sonnet Max wins 5 benchmarks, Claude 3.7 Sonnet Reasoning wins 7.
Which is cheaper, Claude 3.7 Sonnet Max or Claude 3.7 Sonnet Reasoning?
Claude 3.7 Sonnet Reasoning is cheaper on a blended 3:1 basis at about $31.63 per million tokens, versus $33.46 for Claude 3.7 Sonnet Max.
Which has the larger context window?
Both models list a 128,000-token context window.
Are these models open weights?
Claude 3.7 Sonnet Max is proprietary; Claude 3.7 Sonnet Reasoning is proprietary.
Which should I choose for production?
If you need a single default, start with Claude 3.7 Sonnet Reasoning if cost is the constraint and Claude 3.7 Sonnet Max if context is the constraint. Test both on a sample of your own traffic before committing.