Claude Haiku 4.5 Max vs o3 Vision: which model should you choose?
We compared Claude Haiku 4.5 Max and o3 Vision on price, context window and 12 benchmarks. Claude Haiku 4.5 Max has the stronger average benchmark score; o3 Vision is cheaper on a blended 3:1 basis.
Claude Haiku 4.5 Max
Claude Haiku 4.5 Max is a multimodal model from Anthropic. It offers a 200,000-token context window, costs $15.98 per million input tokens and $80.37 per million output tokens, and averages 83.8 across the index's benchmark suite.
- Input
- $15.98 / 1M
- Output
- $80.37 / 1M
- Context
- 200,000
- Avg score
- 83.8
- 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 Haiku 4.5 Max | o3 Vision | Edge |
|---|---|---|---|
| Input price / 1M | $15.98 | $15.24 | B |
| Output price / 1M | $80.37 | $65.25 | B |
| Context window | 200,000 | 1,000,000 | B |
| Max output | 4,096 | 8,192 | B |
| Average score | 83.8 | 81.8 | A |
| Arena Elo | 1452.0 | 1436.5 | A |
| Open weights | No | No | Tie |
Benchmark comparison
Claude Haiku 4.5 Max wins 10, o3 Vision wins 2, and 0 benchmarks are tied. The table shows the modelled score for each model and the gap.
| Benchmark | Claude Haiku 4.5 Max | o3 Vision | Gap | Winner |
|---|---|---|---|---|
| MMLU-Pro | 86.6 | 83.6 | 3.0 | Claude Haiku 4.5 Max |
| GPQA Diamond | 80.3 | 77.8 | 2.5 | Claude Haiku 4.5 Max |
| SWE-bench Verified | 74.0 | 71.8 | 2.2 | Claude Haiku 4.5 Max |
| HumanEval | 88.5 | 85.6 | 2.9 | Claude Haiku 4.5 Max |
| MATH-500 | 88.7 | 84.4 | 4.3 | Claude Haiku 4.5 Max |
| AIME 2025 | 78.2 | 82.4 | 4.2 | o3 Vision |
| LiveCodeBench | 79.2 | 73.7 | 5.5 | Claude Haiku 4.5 Max |
| IFEval | 89.9 | 89.3 | 0.6 | Claude Haiku 4.5 Max |
| TruthfulQA | 83.7 | 85.8 | 2.1 | o3 Vision |
| HellaSwag | 91.1 | 89.7 | 1.4 | Claude Haiku 4.5 Max |
| MMMU | 81.4 | 75.7 | 5.7 | Claude Haiku 4.5 Max |
| Arena Elo | 1452.0 | 1436.5 | 15.5 | Claude Haiku 4.5 Max |
Price analysis
On a blended 3:1 input-to-output basis, Claude Haiku 4.5 Max costs about $32.08 per million tokens and o3 Vision costs about $27.74. o3 Vision is roughly 14% cheaper than Claude Haiku 4.5 Max. 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 Haiku 4.5 Max. That matters for long documents, large codebases and multi-step agent traces.
Verdict
Across 12 shared benchmarks, Claude Haiku 4.5 Max wins 10, o3 Vision wins 2, and 0 are tied. On the index average, Claude Haiku 4.5 Max leads o3 Vision by 2.0 points (83.8 versus 81.8).
The price picture favours o3 Vision. 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 Haiku 4.5 Max for quality-sensitive work and o3 Vision for high-volume, well-scoped tasks. Run both on a sample of your own traffic before locking in a choice.
Choose Claude Haiku 4.5 Max if
- You want the higher average benchmark score in this index.
Choose o3 Vision if
- Unit cost matters and you want the cheaper blended price.
- You need the larger 1,000,000-token context window.
- You need the larger 8,192-token output limit.
FAQ
Is Claude Haiku 4.5 Max better than o3 Vision?
On the index average, Claude Haiku 4.5 Max leads o3 Vision by 2.0 points (83.8 versus 81.8). The better choice depends on price, context and your task. Claude Haiku 4.5 Max wins 10 benchmarks, o3 Vision wins 2.
Which is cheaper, Claude Haiku 4.5 Max or o3 Vision?
o3 Vision is cheaper on a blended 3:1 basis at about $27.74 per million tokens, versus $32.08 for Claude Haiku 4.5 Max.
Which has the larger context window?
o3 Vision has the larger context window at 1,000,000 tokens. Claude Haiku 4.5 Max has 200,000 tokens.
Are these models open weights?
Claude Haiku 4.5 Max is proprietary; o3 Vision is proprietary.
Which should I choose for production?
If you need a single default, start with Claude Haiku 4.5 Max for quality-sensitive work and o3 Vision for high-volume, well-scoped tasks. Run both on a sample of your own traffic before locking in a choice.