Claude Haiku 4.5 Pro vs Gemini 2.5 Pro Vision: which model should you choose?
We compared Claude Haiku 4.5 Pro and Gemini 2.5 Pro Vision on price, context window and 12 benchmarks. Gemini 2.5 Pro Vision has the stronger average benchmark score; Gemini 2.5 Pro Vision is cheaper on a blended 3:1 basis.
Claude Haiku 4.5 Pro
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.
- Input
- $15.07 / 1M
- Output
- $73.96 / 1M
- Context
- 1,000,000
- Avg score
- 80.8
- Open weights
- No
Gemini 2.5 Pro Vision
Gemini 2.5 Pro Vision is a multimodal model from Google DeepMind. It offers a 200,000-token context window, costs $14.91 per million input tokens and $71.00 per million output tokens, and averages 82.0 across the index's benchmark suite.
- Input
- $14.91 / 1M
- Output
- $71.00 / 1M
- Context
- 200,000
- Avg score
- 82.0
- Open weights
- No
Specification comparison
| Spec | Claude Haiku 4.5 Pro | Gemini 2.5 Pro Vision | Edge |
|---|---|---|---|
| Input price / 1M | $15.07 | $14.91 | B |
| Output price / 1M | $73.96 | $71.00 | B |
| Context window | 1,000,000 | 200,000 | A |
| Max output | 8,192 | 4,096 | A |
| Average score | 80.8 | 82.0 | B |
| Arena Elo | 1436.2 | 1451.3 | B |
| Open weights | No | No | Tie |
Benchmark comparison
Claude Haiku 4.5 Pro wins 3, Gemini 2.5 Pro Vision wins 8, and 1 benchmarks are tied. The table shows the modelled score for each model and the gap.
| Benchmark | Claude Haiku 4.5 Pro | Gemini 2.5 Pro Vision | Gap | Winner |
|---|---|---|---|---|
| MMLU-Pro | 81.5 | 83.9 | 2.4 | Gemini 2.5 Pro Vision |
| GPQA Diamond | 75.7 | 78.0 | 2.3 | Gemini 2.5 Pro Vision |
| SWE-bench Verified | 70.4 | 72.4 | 2.0 | Gemini 2.5 Pro Vision |
| HumanEval | 86.0 | 85.8 | 0.2 | Claude Haiku 4.5 Pro |
| MATH-500 | 83.7 | 82.9 | 0.8 | Claude Haiku 4.5 Pro |
| AIME 2025 | 80.1 | 80.0 | 0.1 | Claude Haiku 4.5 Pro |
| LiveCodeBench | 72.4 | 76.0 | 3.6 | Gemini 2.5 Pro Vision |
| IFEval | 90.1 | 90.2 | 0.1 | Gemini 2.5 Pro Vision |
| TruthfulQA | 84.1 | 84.1 | 0.0 | Tie |
| HellaSwag | 89.3 | 90.8 | 1.5 | Gemini 2.5 Pro Vision |
| MMMU | 75.3 | 78.2 | 2.9 | Gemini 2.5 Pro Vision |
| Arena Elo | 1436.2 | 1451.3 | 15.1 | Gemini 2.5 Pro Vision |
Price analysis
On a blended 3:1 input-to-output basis, Claude Haiku 4.5 Pro costs about $29.79 per million tokens and Gemini 2.5 Pro Vision costs about $28.93. Gemini 2.5 Pro Vision is roughly 3% cheaper than Claude Haiku 4.5 Pro. At high volume, that gap compounds quickly, so price should carry real weight unless the quality difference is decisive.
Claude Haiku 4.5 Pro has the larger context window at 1,000,000 tokens, compared with 200,000 for Gemini 2.5 Pro Vision. That matters for long documents, large codebases and multi-step agent traces.
Verdict
Across 12 shared benchmarks, Claude Haiku 4.5 Pro wins 3, Gemini 2.5 Pro Vision wins 8, and 1 are tied. On the index average, Gemini 2.5 Pro Vision leads Claude Haiku 4.5 Pro by 1.2 points (82.0 versus 80.8).
The price picture favours Gemini 2.5 Pro Vision. The context picture favours Claude Haiku 4.5 Pro. 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 Gemini 2.5 Pro Vision for quality-sensitive work, and check whether its price holds at your expected volume before committing.
Choose Claude Haiku 4.5 Pro if
- You need the larger 1,000,000-token context window.
- You need the larger 8,192-token output limit.
Choose Gemini 2.5 Pro Vision if
- You want the higher average benchmark score in this index.
- Unit cost matters and you want the cheaper blended price.
FAQ
Is Claude Haiku 4.5 Pro better than Gemini 2.5 Pro Vision?
On the index average, Gemini 2.5 Pro Vision leads Claude Haiku 4.5 Pro by 1.2 points (82.0 versus 80.8). The better choice depends on price, context and your task. Claude Haiku 4.5 Pro wins 3 benchmarks, Gemini 2.5 Pro Vision wins 8.
Which is cheaper, Claude Haiku 4.5 Pro or Gemini 2.5 Pro Vision?
Gemini 2.5 Pro Vision is cheaper on a blended 3:1 basis at about $28.93 per million tokens, versus $29.79 for Claude Haiku 4.5 Pro.
Which has the larger context window?
Claude Haiku 4.5 Pro has the larger context window at 1,000,000 tokens. Gemini 2.5 Pro Vision has 200,000 tokens.
Are these models open weights?
Claude Haiku 4.5 Pro is proprietary; Gemini 2.5 Pro Vision is proprietary.
Which should I choose for production?
If you need a single default, start with Gemini 2.5 Pro Vision for quality-sensitive work, and check whether its price holds at your expected volume before committing.