Model comparison
Claude Haiku 4.5 vs o1-mini
Claude Haiku 4.5 is the stronger model overall, scoring 39.5 to 34.0 on the Noometry Index.
Last verified . 25 shared benchmarks.
Summary
- They share 25 benchmarks with published results for both. Claude Haiku 4.5 scores higher in 9 categories and o1-mini in 0 categories; 9 gaps are clear of the uncertainty.
- The widest gap is in writing & preference, where Claude Haiku 4.5 leads 57.9 to 48.4.
- The biggest single-benchmark swing is ARC-AGI-1: 47.7% for Claude Haiku 4.5 and 14% for o1-mini.
Side by side
| Claude Haiku 4.5 | o1-mini | |
|---|---|---|
| Provider | Anthropic | OpenAI |
| Noometry Index | 39.5 | 34.0 |
| Released | 2025-10-15 | 2024-09-12 |
| Weights | Proprietary | Proprietary |
| Context window | 200K | — |
| Max output | 64K | — |
| Input $ / M tokens | $1 | — |
| Output $ / M tokens | $5 | — |
| Results tracked | 53 | 39 |
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Category by category
Coding Claude Haiku 4.5 leads
Claude Haiku 4.5: 44.0 (#78), o1-mini: 35.5 (#224)
| Benchmark | Claude Haiku 4.5 | o1-mini |
|---|---|---|
| WeirdML | 45.4% | 36.3% |
| LMArena Coding | 1453 | 1362 |
| SWE-bench Verified (bash only) | 66.6% | — |
| Aider Polyglot | — | 32.9% |
| LMArena WebDev | 1330 | — |
| SWE-bench Multilingual | 64.7% | — |
| SciCode | 43.3% | — |
| LiveBench Coding | — | 48% |
| ALE-Bench | 653.48 | — |
| HumanEval+ | — | 89% |
| MBPP+ | — | 78.8% |
Agentic & Tool Use Claude Haiku 4.5 leads
Claude Haiku 4.5: 33.6 (#52), o1-mini: 24.6 (#118)
| Benchmark | Claude Haiku 4.5 | o1-mini |
|---|---|---|
| Terminal-Bench | 35.5% | — |
| Berkeley Function Calling Leaderboard | 68.7% | — |
| Cybench | — | 10% |
| DeepResearch Bench | 45.5% | — |
| BALROG | 31.2% | — |
| ExploitBench | 13.7% | — |
| Vending-Bench 2 | 458.89 | — |
Reasoning Claude Haiku 4.5 leads
Claude Haiku 4.5: 15.1 (#320), o1-mini: 8.8 (#346)
| Benchmark | Claude Haiku 4.5 | o1-mini |
|---|---|---|
| ARC-AGI-2 | 4% | 0.8% |
| ARC-AGI-1 | 47.7% | 14% |
| LMArena Hard Prompts | 1420 | 1333 |
| Epoch Capabilities Index | 142.41 | 135.82 |
| SimpleBench | — | 18.1% |
| NYT Connections (extended) | 14.3% | — |
| CritPt | 0% | — |
| Chess Puzzles | 8% | — |
| LiveBench Reasoning | — | 72.3% |
| DTBench | 73.6% | — |
| LiveBench Data Analysis | — | 57.9% |
| LMCA | 30.9% | — |
| ForecastBench | 61.4 | — |
| LiveBench | — | 57.8% |
Math Claude Haiku 4.5 leads
Claude Haiku 4.5: 44.9 (#78), o1-mini: 35.4 (#186)
| Benchmark | Claude Haiku 4.5 | o1-mini |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 66.7% | 46.9% |
| LMArena Math | 1396 | 1358 |
| MATH Level 5 | 96.4% | 89.2% |
| FrontierMath (Feb 2025 set) | 5.9% | 1.7% |
| Omni-MATH | 56.1% | — |
| LiveBench Math | — | 62% |
| FrontierMath Tier 4 (v1) | 2.1% | — |
Knowledge Claude Haiku 4.5 leads
Claude Haiku 4.5: 37.7 (#153), o1-mini: 34.9 (#192)
| Benchmark | Claude Haiku 4.5 | o1-mini |
|---|---|---|
| GPQA Diamond | 71.2% | 62.4% |
| LMArena Expert | 1442 | 1316 |
| SimpleQA Verified | 13.2% | — |
| MMLU-Pro | 77.7% | — |
| Confabulations | — | 18.6% |
| Vectara Hallucination Rate | 9.8% | — |
| GPQA (HELM) | 60.5% | — |
Multimodal Not comparable
Claude Haiku 4.5: 26.8 (#118), o1-mini: —
| Benchmark | Claude Haiku 4.5 | o1-mini |
|---|---|---|
| Blueprint-Bench 2 | 0% | — |
| LMArena Document | 1420 | — |
Multilingual Claude Haiku 4.5 leads
Claude Haiku 4.5: 49.9 (#129), o1-mini: 43.6 (#182)
| Benchmark | Claude Haiku 4.5 | o1-mini |
|---|---|---|
| LMArena Non-English | 1377 | 1289 |
| LMArena Chinese | 1417 | 1314 |
| LMArena French | 1408 | 1293 |
| LMArena German | 1375 | 1278 |
| LMArena Japanese | 1339 | 1245 |
| LMArena Korean | 1347 | 1223 |
| LMArena Russian | 1381 | 1283 |
| LMArena Spanish | 1420 | 1303 |
Instruction Following Claude Haiku 4.5 leads
Claude Haiku 4.5: 71.4 (#149), o1-mini: 66.7 (#206)
| Benchmark | Claude Haiku 4.5 | o1-mini |
|---|---|---|
| LMArena Instruction Following | 1414 | 1304 |
| LiveBench Instruction Following | — | 65.4% |
| IFEval | 80.1% | — |
Long Context Claude Haiku 4.5 leads
Claude Haiku 4.5: 43.6 (#92), o1-mini: 40.1 (#161)
| Benchmark | Claude Haiku 4.5 | o1-mini |
|---|---|---|
| LMArena Longer Query | 1427 | 1320 |
Writing & Preference Claude Haiku 4.5 leads
Claude Haiku 4.5: 57.9 (#123), o1-mini: 48.4 (#202)
| Benchmark | Claude Haiku 4.5 | o1-mini |
|---|---|---|
| LMArena Text | 1396 | 1317 |
| LMArena Creative Writing | 1372 | 1244 |
| LMArena Multi-Turn | 1409 | 1314 |
| Short-Story Creative Writing | — | 64.9% |
| WildBench | 83.9% | — |
| EQ-Bench 4 | 1064 | — |
| LiveBench Language | — | 40.9% |
Frequently asked questions
Is Claude Haiku 4.5 better than o1-mini?
Claude Haiku 4.5 is the stronger model overall, scoring 39.5 to 34.0 on the Noometry Index.
Is Claude Haiku 4.5 or o1-mini better for coding?
Claude Haiku 4.5 scores higher on coding benchmarks: 44.0 versus 35.5 in the Noometry coding category.
How many benchmarks do Claude Haiku 4.5 and o1-mini share?
25 benchmarks have published results for both models. Claude Haiku 4.5 has 53 scored results on Noometry and o1-mini has 39.