Claude Haiku 4.5 Reasoning vs Doubao 1.5 Pro Max: which model should you choose?
We compared Claude Haiku 4.5 Reasoning and Doubao 1.5 Pro Max on price, context window and 12 benchmarks. Claude Haiku 4.5 Reasoning has the stronger average benchmark score; Claude Haiku 4.5 Reasoning is cheaper on a blended 3:1 basis.
Claude Haiku 4.5 Reasoning
Claude Haiku 4.5 Reasoning is a multimodal model from Anthropic. It offers a 128,000-token context window, costs $15.11 per million input tokens and $70.05 per million output tokens, and averages 81.4 across the index's benchmark suite.
- Input
- $15.11 / 1M
- Output
- $70.05 / 1M
- Context
- 128,000
- Avg score
- 81.4
- Open weights
- No
Doubao 1.5 Pro Max
Doubao 1.5 Pro Max is a multimodal model from ByteDance. It offers a 400,000-token context window, costs $14.93 per million input tokens and $73.69 per million output tokens, and averages 81.2 across the index's benchmark suite.
- Input
- $14.93 / 1M
- Output
- $73.69 / 1M
- Context
- 400,000
- Avg score
- 81.2
- Open weights
- No
Specification comparison
| Spec | Claude Haiku 4.5 Reasoning | Doubao 1.5 Pro Max | Edge |
|---|---|---|---|
| Input price / 1M | $15.11 | $14.93 | B |
| Output price / 1M | $70.05 | $73.69 | A |
| Context window | 128,000 | 400,000 | B |
| Max output | 128,000 | 4,096 | A |
| Average score | 81.4 | 81.2 | A |
| Arena Elo | 1444.2 | 1447.5 | B |
| Open weights | No | No | Tie |
Benchmark comparison
Claude Haiku 4.5 Reasoning wins 5, Doubao 1.5 Pro Max wins 7, and 0 benchmarks are tied. The table shows the modelled score for each model and the gap.
| Benchmark | Claude Haiku 4.5 Reasoning | Doubao 1.5 Pro Max | Gap | Winner |
|---|---|---|---|---|
| MMLU-Pro | 83.4 | 81.1 | 2.3 | Claude Haiku 4.5 Reasoning |
| GPQA Diamond | 74.6 | 76.1 | 1.5 | Doubao 1.5 Pro Max |
| SWE-bench Verified | 69.6 | 70.7 | 1.1 | Doubao 1.5 Pro Max |
| HumanEval | 88.7 | 84.0 | 4.7 | Claude Haiku 4.5 Reasoning |
| MATH-500 | 85.8 | 85.3 | 0.5 | Claude Haiku 4.5 Reasoning |
| AIME 2025 | 79.0 | 80.4 | 1.4 | Doubao 1.5 Pro Max |
| LiveCodeBench | 73.8 | 73.5 | 0.3 | Claude Haiku 4.5 Reasoning |
| IFEval | 89.9 | 90.2 | 0.3 | Doubao 1.5 Pro Max |
| TruthfulQA | 82.5 | 84.4 | 1.9 | Doubao 1.5 Pro Max |
| HellaSwag | 90.9 | 87.8 | 3.1 | Claude Haiku 4.5 Reasoning |
| MMMU | 76.7 | 79.3 | 2.6 | Doubao 1.5 Pro Max |
| Arena Elo | 1444.2 | 1447.5 | 3.3 | Doubao 1.5 Pro Max |
Price analysis
On a blended 3:1 input-to-output basis, Claude Haiku 4.5 Reasoning costs about $28.84 per million tokens and Doubao 1.5 Pro Max costs about $29.62. Claude Haiku 4.5 Reasoning is roughly 3% cheaper than Doubao 1.5 Pro Max. At high volume, that gap compounds quickly, so price should carry real weight unless the quality difference is decisive.
Doubao 1.5 Pro Max has the larger context window at 400,000 tokens, compared with 128,000 for Claude Haiku 4.5 Reasoning. That matters for long documents, large codebases and multi-step agent traces.
Verdict
Across 12 shared benchmarks, Claude Haiku 4.5 Reasoning wins 5, Doubao 1.5 Pro Max wins 7, and 0 are tied. On the index average, Claude Haiku 4.5 Reasoning leads Doubao 1.5 Pro Max by 0.2 points (81.4 versus 81.2).
The price picture favours Claude Haiku 4.5 Reasoning. The context picture favours Doubao 1.5 Pro Max. 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 Reasoning for quality-sensitive work, and check whether its price holds at your expected volume before committing.
Choose Claude Haiku 4.5 Reasoning 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 128,000-token output limit.
- The workload needs multi-step reasoning.
Choose Doubao 1.5 Pro Max if
- You need the larger 400,000-token context window.
FAQ
Is Claude Haiku 4.5 Reasoning better than Doubao 1.5 Pro Max?
On the index average, Claude Haiku 4.5 Reasoning leads Doubao 1.5 Pro Max by 0.2 points (81.4 versus 81.2). The better choice depends on price, context and your task. Claude Haiku 4.5 Reasoning wins 5 benchmarks, Doubao 1.5 Pro Max wins 7.
Which is cheaper, Claude Haiku 4.5 Reasoning or Doubao 1.5 Pro Max?
Claude Haiku 4.5 Reasoning is cheaper on a blended 3:1 basis at about $28.84 per million tokens, versus $29.62 for Doubao 1.5 Pro Max.
Which has the larger context window?
Doubao 1.5 Pro Max has the larger context window at 400,000 tokens. Claude Haiku 4.5 Reasoning has 128,000 tokens.
Are these models open weights?
Claude Haiku 4.5 Reasoning is proprietary; Doubao 1.5 Pro Max is proprietary.
Which should I choose for production?
If you need a single default, start with Claude Haiku 4.5 Reasoning for quality-sensitive work, and check whether its price holds at your expected volume before committing.