o4 Nano on LiveCodeBench: score, rank and what it means
o4 Nano scores 65.9 on LiveCodeBench, placing it #278 of 600 models in the index. The benchmark average is 61.0 and the leader is Claude Sonnet 4.5 Reasoning at 85.1.
Score distribution
The chart shows the top 10 models on LiveCodeBench, with o4 Nano highlighted. Longer bars mean higher scores.
Top 10 leaderboard
| # | Model | Provider | Context | Input / 1M | Avg score |
|---|---|---|---|---|---|
| 1 | Claude Sonnet 4.5 Reasoning | Anthropic | 400000 | $19.48 | 87.7 |
| 2 | Grok 4 Reasoning | xAI | 2000000 | $19.67 | 87.8 |
| 3 | Claude Opus 4.5 | Anthropic | 400000 | $19.42 | 87.7 |
| 4 | GPT-5.2 Max | OpenAI | 1000000 | $21.39 | 89.2 |
| 5 | Grok 4 Turbo | xAI | 1000000 | $19.21 | 86.7 |
| 6 | GPT-5.1 Turbo | OpenAI | 2000000 | $19.19 | 86.1 |
| 7 | GPT-5.2 Pro | OpenAI | 2000000 | $21.32 | 89.6 |
| 8 | GPT-5.2 Reasoning | OpenAI | 1000000 | $20.98 | 87.5 |
| 9 | Claude Opus 4.5 Pro | Anthropic | 200000 | $20.98 | 89.1 |
| 10 | Gemini 3 Pro Max | Google DeepMind | 2000000 | $20.57 | 87.9 |
What this score means
On LiveCodeBench, o4 Nano sits at #278 of 600. The leader, Claude Sonnet 4.5 Reasoning, scores 85.1, so the gap to the top is 19.2 points. The median model in this index scores 64.7, which puts o4 Nano above the midpoint.
OpenAI models average 77.2 on this benchmark. o4 Nano is 11.3 points below that provider line, so it is a weaker result than the average OpenAI model.
Among mid-range models, the average is 58.3. o4 Nano is 7.6 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 65.9 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 $8.61 per million input tokens, o4 Nano is above the median input price of $4.00 across the 600 models scored on LiveCodeBench. 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 |
|---|---|---|---|---|
| Firefunction Pro | Fireworks AI | 16384 | $9.05 | 72.9 |
| Llama 3 Replicate Instruct | Replicate | 128000 | $3.71 | 75.1 |
| Nemotron 4 Chat | NVIDIA | 65536 | $3.99 | 75.0 |
| Yi-Large Instruct | 01.AI | 32768 | $3.48 | 73.4 |
| o4 Nano | OpenAI | 65536 | $8.61 | 72.0 |
| Codestral Base | Mistral AI | 8192 | $3.31 | 73.1 |
| Llama 3 Lambda Base | Lambda | 8192 | $3.19 | 72.9 |
Other benchmarks for o4 Nano
| Benchmark | Score | Rank | Percentile | Relative |
|---|---|---|---|---|
| MMLU-Pro | 74.9 | 339 | 44th | |
| GPQA Diamond | 67.3 | 327 | 46th | |
| SWE-bench Verified | 62.3 | 272 | 55th | |
| HumanEval | 74.7 | 350 | 42th | |
| MATH-500 | 74.0 | 349 | 42th | |
| AIME 2025 | 64.2 | 354 | 41th | |
| IFEval | 81.6 | 286 | 52th | |
| TruthfulQA | 75.2 | 327 | 46th | |
| HellaSwag | 81.2 | 363 | 40th | |
| MMMU | 70.2 | 296 | 51th | |
| Arena Elo | 1374.8 | 294 | 51th |
FAQ
What score does o4 Nano get on LiveCodeBench?
o4 Nano scores 65.9 on LiveCodeBench in this index. The benchmark average is 61.0 and the top score is 85.1.
How does o4 Nano rank on LiveCodeBench?
It ranks #278 of 600 models, in the 54th percentile. The leader is Claude Sonnet 4.5 Reasoning at 85.1.
Is o4 Nano good at LiveCodeBench?
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 LiveCodeBench score calculated?
LiveCodeBench 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 o4 Nano cost?
o4 Nano costs $8.61 per million input tokens and $41.97 per million output tokens.