o1-mini
o1-mini (OpenAI) was released on Sep 12, 2024. In the Epoch AI capability ranking (ECI), it ranks #141 out of 267 models, with 135.82. On Arena, which measures human preference in blind comparisons, it has 1,362 ELO points (#215). Against models of the same generation, its best result is on GPQA Diamond: 62.4%, #1 of 32.
Where o1-mini stands out and where it falls behind, by the numbers
o1-mini has published results on 12 tests compiled by Epoch AI. The yardstick here is its generation: its position among the models released between Dec 17, 2023 and Dec 11, 2024 that took the same test. Against the whole archive, which includes 2023 models, a recent release lands near the top of almost everything, and that says nothing.
Where it stands out
Tests where it sits in the top third of its own generation.
Where it falls behind
Tests where it sits in the bottom half of its own generation.
See all 12 tests, one by one
| Test | Score | In its generation | Overall | Test record |
|---|---|---|---|---|
| GPQA Diamond | 62.4% | #1 / 32 | #115 / 173 | 96.4% Gemini 4 Argon |
| AIME 2024 and 2025 (OTIS) | 46.9% | #1 / 27 | #116 / 168 | 100.0% GPT-5.5 |
| WeirdML | 36.3% | #2 / 18 | #83 / 112 | 93.6% GPT-6 Astra |
| ARC-AGI 2 | 0.8% | #1 / 4 | #71 / 83 | 95.0% GPT-6 Astra |
| ARC-AGI | 14.0% | #1 / 2 | #71 / 81 | 98.5% Claude Fable 5 |
| SimpleBench | 18.1% | #8 / 11 | #71 / 74 | 81.9% Claude Fable 5 |
| MATH level 5 | 89.2% | #1 / 30 | #15 / 73 | 98.1% GPT-5 |
| FrontierMath | 1.7% | #2 / 6 | #53 / 65 | 51.7% GPT-5.5 |
| Aider Polyglot | 32.90 | #2 / 5 | #28 / 38 | 88.00 GPT-5 |
| Creative writing (Lech Mazur) | 6.49 | #6 / 7 | #33 / 38 | 8.60 GPT-5 |
| LiveBench | 57.76 | #2 / 14 | #14 / 32 | 82.35 Gemini 2.5 Pro (Jun 2025) |
| Cybench | 10.0% | #3 / 7 (tied with 1) | #14 / 19 | 93.0% Claude Opus 4.6 |
For each test, the model's best effort level counts, as in the ranking. Source of the scores: Epoch AI, under CC BY 4.0.
What to compare o1-mini with
The models from other labs closest in capability and released in the same period, at most two per lab. Click any of them to see its page.
| Model | Lab | ECI | ELO | LiveBench | Release |
|---|---|---|---|---|---|
| Qwen3-8B | Alibaba | 136.17 | n/a | n/a | Apr 28, 2025 |
| DeepSeek-V3 (Mar 2025) | DeepSeek | 135.93 | 1,346 | n/a | Mar 24, 2025 |
| o1-mini | OpenAI | 135.82 | 1,362 | n/a | Sep 12, 2024 |
| DeepSeek-R1-Distill-Qwen-14B | DeepSeek | 135.44 | n/a | n/a | Jan 20, 2025 |
| Gemini 2.0 Flash Thinking Exp | Google DeepMind | 135.39 | n/a | n/a | Jan 21, 2025 |
| Gemini 2.0 Flash Thinking (Jan 2025) | Google DeepMind | 135.36 | n/a | n/a | Jan 21, 2025 |
| Mistral Medium 3 | Mistral AI | 134.06 | n/a | n/a | May 7, 2025 |
o1-mini or DeepSeek-V3 (Mar 2025)?
DeepSeek-V3 (Mar 2025) is the model from another lab closest to o1-mini in capability. Across the 9 tests both took, this is the score:
| Test | o1-mini | DeepSeek-V3 (Mar 2025) |
|---|---|---|
| Aider Polyglot | 32.90 | 55.10 |
| SimpleBench | 18.1% | 27.2% |
| AIME 2024 and 2025 (OTIS) | 46.9% | 37.8% |
| Creative writing (Lech Mazur) | 6.49 | 7.70 |
| MATH level 5 | 89.2% | 75.5% |
| LiveBench | 57.76 | 66.86 |
| GPQA Diamond | 62.4% | 67.6% |
| WeirdML | 36.3% | 36.1% |
| FrontierMath | 1.7% | 1.7% |
Unweighted score: each test counts one point, whether math or coding. The dot marks who did better on each row.
Other models from OpenAI
The models from the same lab closest in time, newest first.
| Model | Release | ECI | ELO | LiveBench | Access |
|---|---|---|---|---|---|
| GPT-4.1 | Apr 14, 2025 | 136.77 | n/a | n/a | API access |
| GPT-4.1 mini | Apr 14, 2025 | 135.00 | n/a | n/a | API access |
| GPT-4.5 | Feb 27, 2025 | 136.73 | n/a | n/a | API access |
| o3-mini | Jan 31, 2025 | 140.33 | 1,379 | n/a | API access |
| o1 | Dec 17, 2024 | 141.84 | 1,383 | n/a | API access |
| o1-mini | Sep 12, 2024 | 135.82 | 1,362 | n/a | API access |
| GPT-4o mini | Jul 18, 2024 | 126.58 | n/a | n/a | API access |
| GPT-4o (May 2024) | May 13, 2024 | 129.05 | n/a | n/a | API access |
| GPT-4 Turbo (Apr 2024) | Apr 9, 2024 | 127.25 | n/a | n/a | API access |
Have you used o1-mini? Rate it
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What people ask about o1-mini
Where does o1-mini rank among AI models?
In the ROO3 AI Benchmark, ordered by the Epoch AI ECI, o1-mini ranks #141 out of 267 models, with an ECI of 135.82. The ECI is a composite index that combines several hard benchmarks into a single scale. The position changes when a new model comes out, and the page is refreshed six times a day.
Is o1-mini better than DeepSeek-V3 (Mar 2025)?
Across the 9 tests both models took and Epoch AI compiled, o1-mini comes out ahead on 3, behind on 5 and tied on 1. It is a test-by-test count with no weighting: a win in math counts the same as a win in coding. To choose between the two, look at the tests that resemble your own use.
What is o1-mini best at?
Against models of the same generation (released up to 9 months before and up to 3 months after it), the best relative results of o1-mini are: GPQA Diamond (#1 of 32); MATH level 5 (#1 of 30); AIME 2024 and 2025 (OTIS) (#1 of 27). The yardstick is its position among the models of that period that took the same test.
Where do the numbers on this page come from?
From the same three sources as the ranking, all openly licensed: Epoch AI (ECI and individual tests, CC BY 4.0), Arena (human-preference ELO, CC BY 4.0) and LiveBench (overall average, CC BY-SA 4.0). ROO3 does not measure any model. When the page shows a figure published by the maker itself, it appears in the written analysis, labeled as the maker's, and never enters the ranking.
Where each number comes from
Epoch AI, "AI Benchmarking Hub". Published at epoch.ai. Data under the CC BY 4.0 licence, reordered by roo3.co.
The Arena (LMArena) leaderboard, from the public lmarena-ai/leaderboard-dataset on Hugging Face, under the CC BY 4.0 licence. We are not affiliated with the Arena.
LiveBench, by the LiveBench team, published at livebench.ai under the CC BY-SA 4.0 license. The overall average is recomputed by roo3.co with the same formula as the website (average of the categories), and those numbers stay under CC BY-SA 4.0. We are not affiliated with LiveBench.
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