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Claude Haiku 4.5 vs o4-mini
A detailed comparison of Claude Haiku 4.5 (Anthropic) and o4-mini (OpenAI) across pricing, performance, and features.
Pricing Comparison
| Metric | Claude Haiku 4.5 | o4-mini | Difference |
|---|---|---|---|
| Input / 1M tokens | $0.80 | $1.10 | +38% |
| Output / 1M tokens | $4.00 | $4.40 | +10% |
| Context window | 200K | 200K | — |
| Max output | 8.192K | 100K | — |
Benchmark Comparison
| Benchmark | Claude Haiku 4.5 | o4-mini |
|---|---|---|
| MMLU-Pro | 69.4% | 85% |
| HumanEval | 88.1% | 93.5% |
| GPQA | — | 76% |
Capabilities
| Capability | Claude Haiku 4.5 | o4-mini |
|---|---|---|
| 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
o4-mini Strengths
- ✓Affordable reasoning model
- ✓200K context window
- ✓Good for math and science
o4-mini Weaknesses
- ✗Slower than non-reasoning models
- ✗Reasoning tokens add to effective cost
Quick Verdict
Best value: Claude Haiku 4.5 is the more affordable option at $0.8/$4 per 1M tokens.
Higher benchmarks: o4-mini scores higher on average across available benchmarks (84.8% avg).
Choose Claude Haiku 4.5 if cost matters most. Choose o4-mini if you need the best possible quality for complex tasks.