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Claude Haiku 4.5 vs Gemini 3.1 Pro
A detailed comparison of Claude Haiku 4.5 (Anthropic) and Gemini 3.1 Pro (Google) across pricing, performance, and features.
Pricing Comparison
| Metric | Claude Haiku 4.5 | Gemini 3.1 Pro | Difference |
|---|---|---|---|
| Input / 1M tokens | $0.80 | $2.00 | +150% |
| Output / 1M tokens | $4.00 | $12.00 | +200% |
| Context window | 200K | 1M | — |
| Max output | 8.192K | 64K | — |
Benchmark Comparison
| Benchmark | Claude Haiku 4.5 | Gemini 3.1 Pro |
|---|---|---|
| MMLU-Pro | 69.4% | 91% |
| HumanEval | 88.1% | 95% |
| GPQA | — | 94.3% |
Capabilities
| Capability | Claude Haiku 4.5 | Gemini 3.1 Pro |
|---|---|---|
| audio | ✗ | ✓ |
| code | ✓ | ✓ |
| reasoning | ✗ | ✓ |
| text | ✓ | ✓ |
| tool-use | ✓ | ✓ |
| vision | ✓ | ✓ |
Claude Haiku 4.5 Strengths
- ✓Very fast responses
- ✓Cheapest Anthropic option
- ✓Good for classification and extraction
Claude Haiku 4.5 Weaknesses
- ✗Weakest reasoning in the Claude family
- ✗Can struggle with nuanced instructions
Gemini 3.1 Pro Strengths
- ✓#1 on 12 of 18 tracked benchmarks
- ✓94.3% GPQA Diamond — highest of any model
- ✓Same price as Gemini 3 Pro (free upgrade)
- ✓1M context with configurable thinking levels
Gemini 3.1 Pro Weaknesses
- ✗Still in preview
- ✗Context-tiered pricing ($4/$18 above 200K)
Quick Verdict
Best value: Claude Haiku 4.5 is the more affordable option at $0.8/$4 per 1M tokens.
Higher benchmarks: Gemini 3.1 Pro scores higher on average across available benchmarks (93.4% avg).
Larger context: Gemini 3.1 Pro supports 1M tokens.
Choose Claude Haiku 4.5 if cost matters most. Choose Gemini 3.1 Pro if you need the best possible quality for complex tasks.