o3 Reasoning on HumanEval: score, rank and what it means
o3 Reasoning scores 91.3 on HumanEval, placing it #30 of 600 models in the index. The benchmark average is 74.0 and the leader is GPT-5.2 Pro at 96.8.
Score distribution
The chart shows the top 10 models on HumanEval, with o3 Reasoning highlighted. Longer bars mean higher scores.
Top 10 leaderboard
| # | Model | Provider | Context | Input / 1M | Avg score |
|---|---|---|---|---|---|
| 1 | GPT-5.2 Pro | OpenAI | 2000000 | $21.32 | 89.6 |
| 2 | Gemini 3 Pro Pro | Google DeepMind | 200000 | $19.80 | 87.3 |
| 3 | o4 Max | OpenAI | 2000000 | $19.51 | 86.2 |
| 4 | Grok 4 Reasoning | xAI | 2000000 | $19.67 | 87.8 |
| 5 | Claude Opus 4.5 | Anthropic | 400000 | $19.42 | 87.7 |
| 6 | GPT-5.2 Max | OpenAI | 1000000 | $21.39 | 89.2 |
| 7 | Claude Opus 4.5 Pro | Anthropic | 200000 | $20.98 | 89.1 |
| 8 | Grok 4 Max | xAI | 2000000 | $19.70 | 86.6 |
| 9 | GPT-5.2 Turbo | OpenAI | 1000000 | $20.73 | 87.4 |
| 10 | GPT-5.1 Reasoning | OpenAI | 400000 | $20.27 | 88.3 |
What this score means
On HumanEval, o3 Reasoning sits at #30 of 600. The leader, GPT-5.2 Pro, scores 96.8, so the gap to the top is 5.5 points. The median model in this index scores 77.4, which puts o3 Reasoning above the midpoint.
OpenAI models average 87.6 on this benchmark. o3 Reasoning is 3.7 points above that provider line, so it is a stronger result than the average OpenAI model.
Among frontier models, the average is 90.8. o3 Reasoning is 0.5 points above that group. This is the more useful comparison if you are shortlisting within the same tier rather than across the whole index.
Read a 91.3 as a relative signal, not an absolute guarantee. Benchmark scores depend on prompt format, evaluation harness and contamination controls. Use this page to narrow the shortlist, then test the model on your own data.
Price context
At $18.07 per million input tokens, o3 Reasoning is above the median input price of $4.00 across the 600 models scored on HumanEval. The models immediately around it in the ranking are shown below so you can compare score and price together.
| Model | Provider | Context | Input / 1M | Avg score |
|---|---|---|---|---|
| Gemini 3 Pro | Google DeepMind | 2000000 | $18.24 | 86.1 |
| Claude Opus 4.5 Max | Anthropic | 1000000 | $20.90 | 87.8 |
| Gemini 3 Pro Vision | Google DeepMind | 200000 | $17.59 | 85.5 |
| GPT-5.1 Turbo | OpenAI | 2000000 | $19.19 | 86.1 |
| o3 Reasoning | OpenAI | 200000 | $18.07 | 85.3 |
| GPT-5.2 Vision | OpenAI | 1000000 | $19.03 | 87.4 |
| GPT-5.1 Pro | OpenAI | 200000 | $19.77 | 87.8 |
Other benchmarks for o3 Reasoning
| Benchmark | Score | Rank | Percentile | Relative |
|---|---|---|---|---|
| MMLU-Pro | 87.7 | 22 | 96th | |
| GPQA Diamond | 79.6 | 66 | 89th | |
| SWE-bench Verified | 74.1 | 51 | 92th | |
| MATH-500 | 92.0 | 21 | 97th | |
| AIME 2025 | 80.5 | 81 | 87th | |
| LiveCodeBench | 82.7 | 18 | 97th | |
| IFEval | 90.6 | 62 | 90th | |
| TruthfulQA | 86.5 | 44 | 93th | |
| HellaSwag | 90.9 | 65 | 89th | |
| MMMU | 82.3 | 31 | 95th | |
| Arena Elo | 1456.9 | 60 | 90th |
FAQ
What score does o3 Reasoning get on HumanEval?
o3 Reasoning scores 91.3 on HumanEval in this index. The benchmark average is 74.0 and the top score is 96.8.
How does o3 Reasoning rank on HumanEval?
It ranks #30 of 600 models, in the 95th percentile. The leader is GPT-5.2 Pro at 96.8.
Is o3 Reasoning good at HumanEval?
Yes, relative to the index: it is above the median and inside the top half of scores. The result should be read alongside its price and context window.
How is the HumanEval score calculated?
HumanEval is a coding benchmark. Scores in this index are modelled estimates on a 0–100 scale (or Elo for Arena), derived from capability tier and benchmark difficulty. They are not official leaderboard results.
What does o3 Reasoning cost?
o3 Reasoning costs $18.07 per million input tokens and $70.65 per million output tokens.