Claude Haiku 4.5 Pro: pricing, context window and benchmarks
Claude Haiku 4.5 Pro is a multimodal model from Anthropic. It offers a 1,000,000-token context window, costs $15.07 per million input tokens and $73.96 per million output tokens, and averages 80.8 across the index's benchmark suite.
Pricing
Claude Haiku 4.5 Pro costs $15.07 per million input tokens and $73.96 per million output tokens. A blended 3:1 input-to-output mix works out to about $29.79 per million tokens. Cached input is listed at $1.57 per million tokens.
| Item | Price | Notes |
|---|---|---|
| Input | $15.07 | per 1M tokens |
| Output | $73.96 | per 1M tokens |
| Cached input | $1.57 | per 1M tokens |
| Blended 3:1 | $29.79 | estimate per 1M tokens |
| 1M in + 1M out | $89.03 | estimate |
Benchmarks
Scores below are modelled estimates on a 0–100 scale. Use them to compare relative position, not as official vendor results.
| Benchmark | Score | Rank | Percentile | Relative |
|---|---|---|---|---|
| MMLU-Pro | 81.5 | 133 | 78th | |
| GPQA Diamond | 75.7 | 128 | 79th | |
| SWE-bench Verified | 70.4 | 101 | 83th | |
| HumanEval | 86.0 | 101 | 83th | |
| MATH-500 | 83.7 | 131 | 78th | |
| AIME 2025 | 80.1 | 87 | 86th | |
| LiveCodeBench | 72.4 | 138 | 77th | |
| IFEval | 90.1 | 70 | 88th | |
| TruthfulQA | 84.1 | 81 | 87th | |
| HellaSwag | 89.3 | 105 | 83th | |
| MMMU | 75.3 | 157 | 74th | |
| Arena Elo | 1436.2 | 105 | 83th |
What Claude Haiku 4.5 Pro is good for
Claude Haiku 4.5 Pro is tuned toward coding work. It is a reasonable candidate for code generation, review, debugging and repository-scale tasks, especially when paired with a retrieval layer. At $15.07 per million input tokens, it sits in the mid-range of the index, and the 1,000,000-token context window is enough for large files and multi-file diffs.
Strengths
- Large 1,000,000-token context window for long documents and agent traces.
- Accepts more than text, including image input where the provider supports it.
- Coding benchmarks are a relative strength within its tier.
Trade-offs
- Proprietary licence: you cannot download the weights or self-host the model.
- Premium input pricing at $15.07 per million tokens.
How it compares
| Model | Provider | Context | Input / 1M | Avg score |
|---|---|---|---|---|
| Mistral Large 3 Instruct | Mistral AI | 400000 | $5.31 | 81.1 |
| Claude 3.7 Sonnet Vision | Anthropic | 400000 | $13.96 | 81.0 |
| Claude Haiku 4.5 Pro | Anthropic | 1000000 | $15.07 | 80.8 |
| Kimi K1.5 | Moonshot AI | 128000 | $5.19 | 80.7 |
| ERNIE 4.5 Max | Baidu | 128000 | $14.41 | 80.6 |
| MiniMax-M2 | MiniMax | 200000 | $5.19 | 80.6 |
FAQ
How much does Claude Haiku 4.5 Pro cost?
Claude Haiku 4.5 Pro is listed at $15.07 per million input tokens and $73.96 per million output tokens. Cached input is $1.57 per million tokens. A blended 3:1 input-to-output mix is about $29.79 per million tokens.
What is the context window of Claude Haiku 4.5 Pro?
Claude Haiku 4.5 Pro has a context window of 1,000,000 tokens and can emit up to 8,192 output tokens per request in this index.
Is Claude Haiku 4.5 Pro open weights?
No. Claude Haiku 4.5 Pro is a proprietary model with a proprietary licence, so you cannot download the weights.
How does Claude Haiku 4.5 Pro score on benchmarks?
Claude Haiku 4.5 Pro averages 80.8 across the scored benchmarks in this index, ranking #102 of 600 models. Its strongest relative result is Arena Elo at 1436.2.
What is Claude Haiku 4.5 Pro best for?
Claude Haiku 4.5 Pro is tuned toward coding work. It is a reasonable candidate for code generation, review, debugging and repository-scale tasks, especially when paired with a retrieval layer. At $15.07 per million input tokens, it sits in the mid-range of the index, and the 1,000,000-token context window is enough for large files and multi-file diffs.