# Claude 2 vs o4-mini

> o4-mini is the stronger model overall, scoring 41.6 to 25.0 on the Noometry Index.

- Canonical page: https://noometry.com/compare/claude-2-vs-o4-mini
- Last updated: 2026-10-11
- Shared benchmarks: 5

## Summary

- They share 5 benchmarks with published results for both. Claude 2 scores higher in 0 categories and o4-mini in 3 categories; 3 gaps are clear of the uncertainty.
- The widest gap is in math, where o4-mini leads 40.8 to 9.3.
- The biggest single-benchmark swing is MATH Level 5: 11.7% for Claude 2 and 97.8% for o4-mini.

## Snapshot

| | Claude 2 | o4-mini |
|---|---|---|
| Provider | Anthropic | OpenAI |
| Noometry Index | 25.0 | 41.6 |
| Rank | 346 | 132 |
| Context | — | 200K |
| Input $/M | — | $1.10 |
| Output $/M | — | $4.40 |
| Weights | Proprietary | Proprietary |

## Coding

- Claude 2: —
- o4-mini: 40.9 (#127)

| Benchmark | Claude 2 | o4-mini |
|---|---|---|
| SWE-bench Verified (bash only) | — | 45% |
| Aider Polyglot | — | 72% |
| GSO | — | 3.6% |
| WeirdML | — | 52.6% |
| LMArena Coding | — | 1368 |
| CadEval | — | 62% |
| ALE-Bench | — | 826.17 |
| AlgoTune | — | 1.72 |
| HumanEval+ | 61.6% | — |

## Agentic & Tool Use

- Claude 2: —
- o4-mini: 32.6 (#61)

| Benchmark | Claude 2 | o4-mini |
|---|---|---|
| Berkeley Function Calling Leaderboard | — | 53.2% |
| GDPval | — | 25.3% |
| METR Time Horizons | — | 63.9% |

## Reasoning

- Claude 2: 21.7 (#216)
- o4-mini: 24.6 (#162)

| Benchmark | Claude 2 | o4-mini |
|---|---|---|
| DTBench | 51.9% | 77.6% |
| Epoch Capabilities Index | 120.13 | 145.64 |
| ARC-AGI-2 | — | 6.1% |
| SimpleBench | — | 38.7% |
| Kagi LLM Benchmark | — | 67.6% |
| ARC-AGI-1 | — | 58.7% |
| CritPt | — | 0.6% |
| Chess Puzzles | — | 26% |
| EnigmaEval | — | 9.2% |
| LMArena Hard Prompts | — | 1351 |
| Mystery Game Puzzles | — | 5% |
| LMCA | — | 26.5% |
| ForecastBench | — | 61.8 |

## Math

- Claude 2: 9.3 (#320)
- o4-mini: 40.8 (#89)

| Benchmark | Claude 2 | o4-mini |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 2.5% | 81.7% |
| MATH Level 5 | 11.7% | 97.8% |
| FrontierMath (Tiers 1-3) | — | 36.1% |
| FrontierMath Tier 4 | — | 4.9% |
| Omni-MATH | — | 72% |
| LMArena Math | — | 1389 |
| FrontierMath (Feb 2025 set) | — | 24.8% |
| FrontierMath Tier 4 (v1) | — | 6.3% |

## Knowledge

- Claude 2: 16.9 (#287)
- o4-mini: 43.6 (#91)

| Benchmark | Claude 2 | o4-mini |
|---|---|---|
| GPQA Diamond | 34.7% | 79.6% |
| Humanity's Last Exam | — | 18.1% |
| SimpleQA Verified | — | 19.6% |
| MMLU-Pro | — | 82% |
| Confabulations | — | 15.8% |
| Vectara Hallucination Rate | — | 18.6% |
| GPQA (HELM) | — | 73.5% |
| LMArena Expert | — | 1343 |
| MMLU | 78.5% | — |
| TriviaQA | 87.5% | — |

## Multimodal

- Claude 2: —
- o4-mini: 40.2 (#49)

| Benchmark | Claude 2 | o4-mini |
|---|---|---|
| LMArena Vision | — | 1194 |
| GeoBench | — | 64% |
| VPCT | — | 57.5% |

## Multilingual

- Claude 2: —
- o4-mini: 47.0 (#154)

| Benchmark | Claude 2 | o4-mini |
|---|---|---|
| LMArena Non-English | — | 1337 |
| LMArena Chinese | — | 1354 |
| LMArena French | — | 1364 |
| LMArena German | — | 1336 |
| LMArena Japanese | — | 1308 |
| LMArena Korean | — | 1312 |
| LMArena Russian | — | 1334 |
| LMArena Spanish | — | 1347 |

## Instruction Following

- Claude 2: —
- o4-mini: 75.2 (#68)

| Benchmark | Claude 2 | o4-mini |
|---|---|---|
| IFEval | — | 92.8% |
| LMArena Instruction Following | — | 1321 |

## Long Context

- Claude 2: —
- o4-mini: 45.5 (#33)

| Benchmark | Claude 2 | o4-mini |
|---|---|---|
| Fiction.LiveBench | — | 77.8% |
| LMArena Longer Query | — | 1315 |

## Writing & Preference

- Claude 2: —
- o4-mini: 54.0 (#152)

| Benchmark | Claude 2 | o4-mini |
|---|---|---|
| LMArena Text | — | 1353 |
| LMArena Creative Writing | — | 1294 |
| Short-Story Creative Writing | — | 75% |
| WildBench | — | 85.4% |
| LMArena Multi-Turn | — | 1350 |

## FAQ

### Is Claude 2 better than o4-mini?

o4-mini is the stronger model overall, scoring 41.6 to 25.0 on the Noometry Index.

### How many benchmarks do Claude 2 and o4-mini share?

5 benchmarks have published results for both models. Claude 2 has 8 scored results on Noometry and o4-mini has 60.