Model comparison
Claude Haiku 5.5 vs o1-mini
Claude Haiku 5.5 is the stronger model overall, scoring 49.5 to 34.0 on the Noometry Index.
Last verified . 2 shared benchmarks.
Summary
- They share 2 benchmarks with published results for both. Claude Haiku 5.5 scores higher in 4 categories and o1-mini in 0 categories; 4 gaps are clear of the uncertainty.
- The widest gap is in math, where Claude Haiku 5.5 leads 73.6 to 35.4.
- The biggest single-benchmark swing is OTIS Mock AIME 2024-2025: 98.9% for Claude Haiku 5.5 and 46.9% for o1-mini.
Side by side
| Claude Haiku 5.5 | o1-mini | |
|---|---|---|
| Provider | Anthropic | OpenAI |
| Noometry Index | 49.5 | 34.0 |
| Released | 2026-10-07 | 2024-09-12 |
| Weights | Proprietary | Proprietary |
| Context window | 1M | — |
| Max output | 128K | — |
| Input $ / M tokens | $0.10 | — |
| Output $ / M tokens | $0.50 | — |
| Results tracked | 9 | 39 |
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Category by category
Coding Claude Haiku 5.5 leads
Claude Haiku 5.5: 49.2 (#50), o1-mini: 35.5 (#224)
| Benchmark | Claude Haiku 5.5 | o1-mini |
|---|---|---|
| Aider Polyglot | — | 32.9% |
| LMArena WebDev | 1587 | — |
| WeirdML | — | 36.3% |
| LiveBench Coding | — | 48% |
| LMArena Coding | — | 1362 |
| HumanEval+ | — | 89% |
| MBPP+ | — | 78.8% |
Agentic & Tool Use Not comparable
Claude Haiku 5.5: —, o1-mini: 24.6 (#118)
| Benchmark | Claude Haiku 5.5 | o1-mini |
|---|---|---|
| Cybench | — | 10% |
Reasoning Claude Haiku 5.5 leads
Claude Haiku 5.5: 35.2 (#69), o1-mini: 8.8 (#346)
| Benchmark | Claude Haiku 5.5 | o1-mini |
|---|---|---|
| ARC-AGI-2 | — | 0.8% |
| SimpleBench | — | 18.1% |
| NYT Connections (extended) | 65.7% | — |
| ARC-AGI-1 | — | 14% |
| LiveBench Reasoning | — | 72.3% |
| LMArena Hard Prompts | — | 1333 |
| Mystery Game Puzzles | 30% | — |
| LiveBench Data Analysis | — | 57.9% |
| Epoch Capabilities Index | — | 135.82 |
| LiveBench | — | 57.8% |
Math Claude Haiku 5.5 leads
Claude Haiku 5.5: 73.6 (#18), o1-mini: 35.4 (#186)
| Benchmark | Claude Haiku 5.5 | o1-mini |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 98.9% | 46.9% |
| FrontierMath (Tiers 1-3) | 75.1% | — |
| FrontierMath Tier 4 | 46.3% | — |
| LiveBench Math | — | 62% |
| LMArena Math | — | 1358 |
| MATH Level 5 | — | 89.2% |
| FrontierMath (Feb 2025 set) | — | 1.7% |
Knowledge Claude Haiku 5.5 leads
Claude Haiku 5.5: 50.8 (#70), o1-mini: 34.9 (#192)
| Benchmark | Claude Haiku 5.5 | o1-mini |
|---|---|---|
| GPQA Diamond | 89.6% | 62.4% |
| SimpleQA Verified | 23.8% | — |
| Confabulations | — | 18.6% |
| LMArena Expert | — | 1316 |
Multimodal Not comparable
Claude Haiku 5.5: 43.7 (#21), o1-mini: —
| Benchmark | Claude Haiku 5.5 | o1-mini |
|---|---|---|
| Furniture Assembly | 47.5% | — |
Multilingual Not comparable
Claude Haiku 5.5: —, o1-mini: 43.6 (#182)
| Benchmark | Claude Haiku 5.5 | o1-mini |
|---|---|---|
| LMArena Non-English | — | 1289 |
| LMArena Chinese | — | 1314 |
| LMArena French | — | 1293 |
| LMArena German | — | 1278 |
| LMArena Japanese | — | 1245 |
| LMArena Korean | — | 1223 |
| LMArena Russian | — | 1283 |
| LMArena Spanish | — | 1303 |
Instruction Following Not comparable
Claude Haiku 5.5: —, o1-mini: 66.7 (#206)
| Benchmark | Claude Haiku 5.5 | o1-mini |
|---|---|---|
| LiveBench Instruction Following | — | 65.4% |
| LMArena Instruction Following | — | 1304 |
Long Context Not comparable
Claude Haiku 5.5: —, o1-mini: 40.1 (#161)
| Benchmark | Claude Haiku 5.5 | o1-mini |
|---|---|---|
| LMArena Longer Query | — | 1320 |
Writing & Preference Not comparable
Claude Haiku 5.5: —, o1-mini: 48.4 (#202)
| Benchmark | Claude Haiku 5.5 | o1-mini |
|---|---|---|
| LMArena Text | — | 1317 |
| LMArena Creative Writing | — | 1244 |
| Short-Story Creative Writing | — | 64.9% |
| LMArena Multi-Turn | — | 1314 |
| LiveBench Language | — | 40.9% |
Frequently asked questions
Is Claude Haiku 5.5 better than o1-mini?
Claude Haiku 5.5 is the stronger model overall, scoring 49.5 to 34.0 on the Noometry Index.
Is Claude Haiku 5.5 or o1-mini better for coding?
Claude Haiku 5.5 scores higher on coding benchmarks: 49.2 versus 35.5 in the Noometry coding category.
How many benchmarks do Claude Haiku 5.5 and o1-mini share?
2 benchmarks have published results for both models. Claude Haiku 5.5 has 9 scored results on Noometry and o1-mini has 39.