Claude 3.7 Sonnet Vision vs Claude Haiku 4.5: which model should you choose?
We compared Claude 3.7 Sonnet Vision and Claude Haiku 4.5 on price, context window and 12 benchmarks. Claude 3.7 Sonnet Vision has the stronger average benchmark score; Claude 3.7 Sonnet Vision is cheaper on a blended 3:1 basis.
Claude 3.7 Sonnet Vision
Claude 3.7 Sonnet Vision is a multimodal model from Anthropic. It offers a 400,000-token context window, costs $13.96 per million input tokens and $56.28 per million output tokens, and averages 81.0 across the index's benchmark suite.
- Input
- $13.96 / 1M
- Output
- $56.28 / 1M
- Context
- 400,000
- Avg score
- 81.0
- Open weights
- No
Claude Haiku 4.5
Claude Haiku 4.5 is a multimodal model from Anthropic. It offers a 1,000,000-token context window, costs $13.86 per million input tokens and $74.67 per million output tokens, and averages 79.4 across the index's benchmark suite.
- Input
- $13.86 / 1M
- Output
- $74.67 / 1M
- Context
- 1,000,000
- Avg score
- 79.4
- Open weights
- No
Specification comparison
| Spec | Claude 3.7 Sonnet Vision | Claude Haiku 4.5 | Edge |
|---|---|---|---|
| Input price / 1M | $13.96 | $13.86 | B |
| Output price / 1M | $56.28 | $74.67 | A |
| Context window | 400,000 | 1,000,000 | B |
| Max output | 8,192 | 128,000 | B |
| Average score | 81.0 | 79.4 | A |
| Arena Elo | 1429.6 | 1421.8 | A |
| Open weights | No | No | Tie |
Benchmark comparison
Claude 3.7 Sonnet Vision wins 9, Claude Haiku 4.5 wins 3, and 0 benchmarks are tied. The table shows the modelled score for each model and the gap.
| Benchmark | Claude 3.7 Sonnet Vision | Claude Haiku 4.5 | Gap | Winner |
|---|---|---|---|---|
| MMLU-Pro | 82.5 | 84.1 | 1.6 | Claude Haiku 4.5 |
| GPQA Diamond | 77.3 | 74.1 | 3.2 | Claude 3.7 Sonnet Vision |
| SWE-bench Verified | 72.2 | 69.2 | 3.0 | Claude 3.7 Sonnet Vision |
| HumanEval | 85.4 | 84.7 | 0.7 | Claude 3.7 Sonnet Vision |
| MATH-500 | 84.8 | 81.4 | 3.4 | Claude 3.7 Sonnet Vision |
| AIME 2025 | 80.9 | 76.5 | 4.4 | Claude 3.7 Sonnet Vision |
| LiveCodeBench | 75.7 | 71.6 | 4.1 | Claude 3.7 Sonnet Vision |
| IFEval | 87.9 | 85.2 | 2.7 | Claude 3.7 Sonnet Vision |
| TruthfulQA | 81.6 | 79.6 | 2.0 | Claude 3.7 Sonnet Vision |
| HellaSwag | 89.4 | 89.6 | 0.2 | Claude Haiku 4.5 |
| MMMU | 73.8 | 77.6 | 3.8 | Claude Haiku 4.5 |
| Arena Elo | 1429.6 | 1421.8 | 7.8 | Claude 3.7 Sonnet Vision |
Price analysis
On a blended 3:1 input-to-output basis, Claude 3.7 Sonnet Vision costs about $24.54 per million tokens and Claude Haiku 4.5 costs about $29.06. Claude 3.7 Sonnet Vision is roughly 16% cheaper than Claude Haiku 4.5. At high volume, that gap compounds quickly, so price should carry real weight unless the quality difference is decisive.
Claude Haiku 4.5 has the larger context window at 1,000,000 tokens, compared with 400,000 for Claude 3.7 Sonnet Vision. That matters for long documents, large codebases and multi-step agent traces.
Verdict
Across 12 shared benchmarks, Claude 3.7 Sonnet Vision wins 9, Claude Haiku 4.5 wins 3, and 0 are tied. On the index average, Claude 3.7 Sonnet Vision leads Claude Haiku 4.5 by 1.6 points (81.0 versus 79.4).
The price picture favours Claude 3.7 Sonnet Vision. The context picture favours Claude Haiku 4.5. 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 Vision for quality-sensitive work, and check whether its price holds at your expected volume before committing.
Choose Claude 3.7 Sonnet Vision if
- You want the higher average benchmark score in this index.
- Unit cost matters and you want the cheaper blended price.
Choose Claude Haiku 4.5 if
- You need the larger 1,000,000-token context window.
- You need the larger 128,000-token output limit.
FAQ
Is Claude 3.7 Sonnet Vision better than Claude Haiku 4.5?
On the index average, Claude 3.7 Sonnet Vision leads Claude Haiku 4.5 by 1.6 points (81.0 versus 79.4). The better choice depends on price, context and your task. Claude 3.7 Sonnet Vision wins 9 benchmarks, Claude Haiku 4.5 wins 3.
Which is cheaper, Claude 3.7 Sonnet Vision or Claude Haiku 4.5?
Claude 3.7 Sonnet Vision is cheaper on a blended 3:1 basis at about $24.54 per million tokens, versus $29.06 for Claude Haiku 4.5.
Which has the larger context window?
Claude Haiku 4.5 has the larger context window at 1,000,000 tokens. Claude 3.7 Sonnet Vision has 400,000 tokens.
Are these models open weights?
Claude 3.7 Sonnet Vision is proprietary; Claude Haiku 4.5 is proprietary.
Which should I choose for production?
If you need a single default, start with Claude 3.7 Sonnet Vision for quality-sensitive work, and check whether its price holds at your expected volume before committing.