# Claude 3.5 Haiku vs o3-mini

> Side-by-side benchmark comparison for Claude 3.5 Haiku and o3-mini across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/claude-3-5-haiku-vs-o3-mini
- Last updated: October 14, 2026

- Shared sourced benchmarks: 5
- HTML indexing: indexable
- Ranking lane: BenchAlign v5.8

## Quick Verdict

Pick Claude 3.5 Haiku if you want the stronger benchmark profile. o3-mini only makes more sense when its price, context window, or workload-specific category wins matter more than the overall score.

## Summary

- Claude 3.5 Haiku leads overall 47 to 40.02.
- The biggest single benchmark swing is AIME 2024 in Mathematics, with scores of 5.3% and 87.3%.

## Model Snapshot

| Property | Claude 3.5 Haiku | o3-mini |
|----------|----------|----------|
| Creator | Anthropic | OpenAI |
| Type | Proprietary | Proprietary |
| Reasoning | Non-Reasoning | Reasoning |
| Context | 200K | 200K |
| Overall Score | null | 40.02 |
| Benchmarks Covered | 10 | 5 |
| Pricing (input/output) | N/A | $1.10 / $4.40 |

## Category Breakdown

### Coding

- Winner: Not comparable
- Claude 3.5 Haiku public-lane score: Coming soon
- o3-mini public-lane score: Coming soon

| Benchmark | Claude 3.5 Haiku | o3-mini | Winner |
|-----------|-----------|-----------|--------|
| HumanEval | 88.1% | Coming soon | Coming soon |
| SWE-bench Verified | 40.6% | 49.3% | o3-mini |

### Reasoning

- Winner: Not comparable
- Claude 3.5 Haiku public-lane score: Coming soon
- o3-mini public-lane score: Coming soon

| Benchmark | Claude 3.5 Haiku | o3-mini | Winner |
|-----------|-----------|-----------|--------|
| BBH | 86.6% | Coming soon | Coming soon |
| DROP | 83.1% | Coming soon | Coming soon |

### Knowledge

- Winner: Not comparable
- Claude 3.5 Haiku public-lane score: Coming soon
- o3-mini public-lane score: 37.7 (Supported · #122/181)

| Benchmark | Claude 3.5 Haiku | o3-mini | Winner |
|-----------|-----------|-----------|--------|
| GPQA | 41.6% | 77.2% | o3-mini |
| MMLU-Pro | 65% | Coming soon | Coming soon |
| MMLU | 80.3% | 86.9% | o3-mini |

### Multilingual

- Winner: Not comparable
- Claude 3.5 Haiku public-lane score: Coming soon
- o3-mini public-lane score: Coming soon

| Benchmark | Claude 3.5 Haiku | o3-mini | Winner |
|-----------|-----------|-----------|--------|
| MGSM | 85.6% | Coming soon | Coming soon |

### Instruction Following

- Winner: Not comparable
- Claude 3.5 Haiku public-lane score: Coming soon
- o3-mini public-lane score: Coming soon

| Benchmark | Claude 3.5 Haiku | o3-mini | Winner |
|-----------|-----------|-----------|--------|
| IFEval | 85.9% | 93.9% | o3-mini |

### Mathematics

- Winner: Not comparable
- Claude 3.5 Haiku public-lane score: Coming soon
- o3-mini public-lane score: Coming soon

| Benchmark | Claude 3.5 Haiku | o3-mini | Winner |
|-----------|-----------|-----------|--------|
| AIME 2024 | 5.3% | 87.3% | o3-mini |

## FAQ

### Which is better overall, Claude 3.5 Haiku or o3-mini?

Claude 3.5 Haiku is ahead overall on BenchLM right now.

### How many benchmarks does Claude 3.5 Haiku cover on BenchLM?

Claude 3.5 Haiku currently has 10 sourced benchmark scores on BenchLM.

### How many benchmarks does o3-mini cover on BenchLM?

o3-mini currently has 5 sourced benchmark scores on BenchLM.

## Related Comparisons

- [Claude 3.5 Haiku vs o3-pro](/compare/claude-3-5-haiku-vs-o3-pro)
- [o3-mini vs o3-pro](/compare/o3-mini-vs-o3-pro)
- [Claude 3.5 Haiku vs o3](/compare/claude-3-5-haiku-vs-o3)
- [o3-mini vs o3](/compare/o3-vs-o3-mini)

## Explore More

- [Claude 3.5 Haiku profile](/models/claude-3-5-haiku)
- [o3-mini profile](/models/o3-mini)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)