FrontierMath
Unpublished research-level math problems with automatically verifiable answers. Tier 4 is the hardest tier.
Problems held privately by Epoch AI.
In the authors’ words
We introduce FrontierMath, a benchmark of hundreds of original, exceptionally challenging mathematics problems crafted and vetted by expert mathematicians. The questions cover most major branches of modern mathematics – from computationally intensive problems in number theory and real analysis to abstract questions in algebraic geometry and category theory. Solving a typical problem requires multiple hours of effort from a researcher in the relevant branch of mathematics, and for the upper end questions, multiple days. FrontierMath uses new, unpublished problems and automated verification to reliably evaluate models while minimizing risk of data contamination. Current state-of-the-art AI models solve under 2% of problems, revealing a vast gap between AI capabilities and the prowess of the mathematical community. As AI systems advance toward expert-level mathematical abilities, FrontierMath offers a rigorous testbed that quantifies their progress.
- Level
- Expert Specialists with years of training, often over hours of work
- Scored
- Checked automatically A program checks the result against an answer key, unit tests or the expected final state.
- Answers
- Short answer A number, word or short string matched to a key.
GPT-5.5 Pro leads with 52.4% among models released by May 2026
Best score per model in Epoch AI’s data. Where a model ran with several settings or harnesses, we keep its best.
The newest model with a score here came out in May 2026, and nobody has tested a newer one. Among the 20 highest-ranked models on the capability index, these have no score yet:
- GPT-6 Astra
- Claude Opus 5.5
- GPT-6.1 Terra
- GPT-6.1 Sol
- and 12 more
- 52.4 GPT-5.5 Pro
- 51.7 GPT-5.5
- 50.0 GPT-5.4 Pro
- 47.6 GPT-5.4
- 47.2 Claude Opus 4.8
- 43.8 Claude Opus 4.7
- 40.7 GPT-5.2
- 40.7 Claude Opus 4.6
- 39.0
Muse Spark
- 39.0 Kimi K2.6
- 39.0
Gemini 3.5 Flash
- 37.6
Gemini 3 Pro
- 36.9
Gemini 3.1 Pro
- 35.6
Gemini 3 Flash
- 33.5 GLM-5.1
- 32.4 GPT-5
- 32.4 Claude Sonnet 4.6
- 31.0 GPT-5.1
- 29.0
Gemini 2.5 Deep Think
- 28.3 GPT-5.4 Mini
- 27.9 Kimi K2.5
- 27.2 GPT-5 mini
- 26.2
Qwen 3.6 Plus
- 25.9 GPT-5.4 Nano
- 24.8 o4-mini
- 23.1
Qwen 3.6 Max (Preview)
- 22.1
DeepSeek-V3.2
- 21.4 Kimi K2 Thinking
- 21.0
Qwen 3.5 Plus (hosted 397B-A17B)
- 20.7 Claude Opus 4.5
- 19.7 Grok 4
- 18.7 o3
- 16.4 GLM-5
- 15.2 Claude Sonnet 4.5
- 14.1
Gemini 2.5 Pro
- 12.4 o3-mini
- 10.3
Qwen 3.6 Flash
- 9.31 o1
- 8.48
Qwen3-235B-A22B-Thinking
- 8.28 GPT-5 nano
- 7.24 Claude Opus 4.1
- 6.21
Qwen 3.5 Flash (hosted 35B-A3B)
- 5.90 Claude Haiku 4.5
- 5.86 Grok-3 mini
- 5.52 GPT-4.1
- 4.84
Gemini 2.5 Flash
- 4.48 GPT-4.1 mini
- 4.48 Claude Opus 4
- 4.14 Claude 3.7 Sonnet
- 4.14 Claude Sonnet 4
- 3.82 GLM-4.6
- 3.79 Grok 3
- 2.44 GLM-4.7
- 2.07 Claude 3.5 Sonnet (October 2024)
- 1.72 o1-mini
- 1.72
DeepSeek-V3
- 1.72
Gemini 2.0 Flash
- 1.72
Qwen Plus
- 1.03 Claude 3.5 Sonnet
- 1.03
Qwen2.5-Max
- 1.03 GPT-4.1 nano
- 0.69 Grok-2
- 0.69
Llama 4 Maverick
- 0.35
Mistral Medium 3
- 0.34 GPT-4o
- 0.34 Claude 3.5 Haiku
- 0.34
Mistral Large 2
- 0.34 GPT-4o
- 0.0
Gemini 1.5 Flash
- 0.0
Llama 4 Scout
- 1 GPT-5.5 Pro high 52.4%
- 2 GPT-5.5 xhigh 51.7%
- 3 GPT-5.4 Pro xhigh 50%
- 4 GPT-5.4 xhigh 47.6%
- 5 Claude Opus 4.8 max 47.2%
- 6 Claude Opus 4.7 xhigh 43.8%
- 7 GPT-5.2 xhigh 40.7%
- 8 Claude Opus 4.6 max 40.7%
- 9
Muse Spark 39%
- 10 Kimi K2.6 39%
- 11
Gemini 3.5 Flash high 39%
- 12
Gemini 3 Pro 37.6%
- 13
Gemini 3.1 Pro 36.9%
- 14
Gemini 3 Flash 35.6%
- 15 GLM-5.1 33.5%
- 16 GPT-5 high 32.4%
- 17 Claude Sonnet 4.6 16k thinking 32.4%
- 18 GPT-5.1 high 31%
- 19
Gemini 2.5 Deep Think 29%
- 20 GPT-5.4 Mini high 28.3%
- 21 Kimi K2.5 Fireworks 27.9%
- 22 GPT-5 mini high 27.2%
- 23
Qwen 3.6 Plus 2026-04-02 26.2%
- 24 GPT-5.4 Nano high 25.9%
- 25 o4-mini high 24.8%
- 26
Qwen 3.6 Max (Preview) 23.1%
- 27
DeepSeek-V3.2 Thinking; Fireworks 22.1%
- 28 Kimi K2 Thinking Together 21.4%
- 29
Qwen 3.5 Plus (hosted 397B-A17B) 21%
- 30 Claude Opus 4.5 no thinking 20.7%
- 31 Grok 4 19.7%
- 32 o3 high 18.7%
- 33 GLM-5 16.4%
- 34 Claude Sonnet 4.5 32k thinking 15.2%
- 35
Gemini 2.5 Pro Jun 2025 14.1%
- 36 o3-mini high 12.4%
- 37
Qwen 3.6 Flash 2026-04-16 10.3%
- 38 o1 high 9.31%
- 39
Qwen3-235B-A22B-Thinking Jul 2025 8.48%
- 40 GPT-5 nano high 8.28%
- 41 Claude Opus 4.1 27K 7.24%
- 42
Qwen 3.5 Flash (hosted 35B-A3B) 6.21%
- 43 Claude Haiku 4.5 32K 5.90%
- 44 Grok-3 mini high 5.86%
- 45 GPT-4.1 5.52%
- 46
Gemini 2.5 Flash Jun 2025 4.84%
- 47 GPT-4.1 mini 4.48%
- 48 Claude Opus 4 4.48%
- 49 Claude 3.7 Sonnet 16k thinking 4.14%
- 50 Claude Sonnet 4 4.14%
- 51 GLM-4.6 Together 3.82%
- 52 Grok 3 3.79%
- 53 GLM-4.7 Together 2.44%
- 54 Claude 3.5 Sonnet (October 2024) 2.07%
- 55 o1-mini medium 1.72%
- 56
DeepSeek-V3 1.72%
- 57
Gemini 2.0 Flash Feb 2025 1.72%
- 58
Qwen Plus Apr 2025 1.72%
- 59 Claude 3.5 Sonnet Jun 2024 1.03%
- 60
Qwen2.5-Max 1.03%
- 61 GPT-4.1 nano 1.03%
- 62 Grok-2 Dec 2024 0.69%
- 63
Llama 4 Maverick FP8 0.69%
- 64
Mistral Medium 3 0.35%
- 65 GPT-4o Aug 2024 0.34%
- 66 Claude 3.5 Haiku Oct 2024 0.34%
- 67
Mistral Large 2 Nov 2024 0.34%
- 68 GPT-4o Nov 2024 0.34%
- 69
Gemini 1.5 Flash Sep 2024 0%
- 70
Llama 4 Scout 0%
| # | Model | Score | Setting | Date | Source |
|---|---|---|---|---|---|
| 1 | GPT-5.5 Pro | 52.4% | high | Apr 2026 | Epoch AI |
| 2 | GPT-5.5 | 51.7% | xhigh | Apr 2026 | Epoch AI |
| 3 | GPT-5.4 Pro | 50% | xhigh | Mar 2026 | Epoch AI |
| 4 | GPT-5.4 | 47.6% | xhigh | Mar 2026 | Epoch AI |
| 5 | Claude Opus 4.8 | 47.2% | max | May 2026 | Epoch AI |
| 6 | Claude Opus 4.7 | 43.8% | xhigh | Apr 2026 | Epoch AI |
| 7 | GPT-5.2 | 40.7% | xhigh | Dec 2025 | Epoch AI |
| 8 | Claude Opus 4.6 | 40.7% | max | Feb 2026 | Epoch AI |
| 9 | | 39% | Apr 2026 | Epoch AI | |
| 10 | Kimi K2.6 | 39% | Apr 2026 | Epoch AI | |
| 11 | | 39% | high | May 2026 | Epoch AI |
| 12 | | 37.6% | Nov 2025 | Epoch AI | |
| 13 | | 36.9% | Feb 2026 | Epoch AI | |
| 14 | | 35.6% | Dec 2025 | Epoch AI | |
| 15 | GLM-5.1 | 33.5% | Apr 2026 | Epoch AI | |
| 16 | GPT-5 | 32.4% | high | Aug 2025 | Epoch AI |
| 17 | Claude Sonnet 4.6 | 32.4% | 16k thinking | Feb 2026 | Epoch AI |
| 18 | GPT-5.1 | 31% | high | Nov 2025 | Epoch AI |
| 19 | | 29% | Aug 2025 | Epoch AI | |
| 20 | GPT-5.4 Mini | 28.3% | high | Mar 2026 | Epoch AI |
| 21 | Kimi K2.5 | 27.9% | Fireworks | Jan 2026 | Epoch AI |
| 22 | GPT-5 mini | 27.2% | high | Aug 2025 | Epoch AI |
| 23 | | 26.2% | 2026-04-02 | Mar 2026 | Epoch AI |
| 24 | GPT-5.4 Nano | 25.9% | high | Mar 2026 | Epoch AI |
| 25 | o4-mini | 24.8% | high | Apr 2025 | Epoch AI |
| 26 | | 23.1% | Apr 2026 | Epoch AI | |
| 27 | | 22.1% | Thinking; Fireworks | Dec 2025 | Epoch AI |
| 28 | Kimi K2 Thinking | 21.4% | Together | Nov 2025 | Epoch AI |
| 29 | | 21% | Feb 2026 | Epoch AI | |
| 30 | Claude Opus 4.5 | 20.7% | no thinking | Nov 2025 | Epoch AI |
| 31 | Grok 4 | 19.7% | Jul 2025 | Epoch AI | |
| 32 | o3 | 18.7% | high | Apr 2025 | Epoch AI |
| 33 | GLM-5 | 16.4% | Feb 2026 | Epoch AI | |
| 34 | Claude Sonnet 4.5 | 15.2% | 32k thinking | Sep 2025 | Epoch AI |
| 35 | | 14.1% | Jun 2025 | Epoch AI | |
| 36 | o3-mini | 12.4% | high | Jan 2025 | Epoch AI |
| 37 | | 10.3% | 2026-04-16 | Apr 2026 | Epoch AI |
| 38 | o1 | 9.31% | high | Dec 2024 | Epoch AI |
| 39 | | 8.48% | Jul 2025 | Epoch AI | |
| 40 | GPT-5 nano | 8.28% | high | Aug 2025 | Epoch AI |
| 41 | Claude Opus 4.1 | 7.24% | 27K | Aug 2025 | Epoch AI |
| 42 | | 6.21% | Feb 2026 | Epoch AI | |
| 43 | Claude Haiku 4.5 | 5.90% | 32K | Oct 2025 | Epoch AI |
| 44 | Grok-3 mini | 5.86% | high | Apr 2025 | Epoch AI |
| 45 | GPT-4.1 | 5.52% | Apr 2025 | Epoch AI | |
| 46 | | 4.84% | Jun 2025 | Epoch AI | |
| 47 | GPT-4.1 mini | 4.48% | Apr 2025 | Epoch AI | |
| 48 | Claude Opus 4 | 4.48% | May 2025 | Epoch AI | |
| 49 | Claude 3.7 Sonnet | 4.14% | 16k thinking | Feb 2025 | Epoch AI |
| 50 | Claude Sonnet 4 | 4.14% | May 2025 | Epoch AI | |
| 51 | GLM-4.6 | 3.82% | Together | Sep 2025 | Epoch AI |
| 52 | Grok 3 | 3.79% | Apr 2025 | Epoch AI | |
| 53 | GLM-4.7 | 2.44% | Together | Dec 2025 | Epoch AI |
| 54 | Claude 3.5 Sonnet (October 2024) | 2.07% | Oct 2024 | Epoch AI | |
| 55 | o1-mini | 1.72% | medium | Sep 2024 | Epoch AI |
| 56 | | 1.72% | Dec 2024 | Epoch AI | |
| 57 | | 1.72% | Feb 2025 | Epoch AI | |
| 58 | | 1.72% | Apr 2025 | Epoch AI | |
| 59 | Claude 3.5 Sonnet | 1.03% | Jun 2024 | Jun 2024 | Epoch AI |
| 60 | | 1.03% | Jan 2025 | Epoch AI | |
| 61 | GPT-4.1 nano | 1.03% | Apr 2025 | Epoch AI | |
| 62 | Grok-2 Dec 2024 | 0.69% | Dec 2024 | Epoch AI | |
| 63 | | 0.69% | FP8 | Apr 2025 | Epoch AI |
| 64 | | 0.35% | May 2025 | Epoch AI | |
| 65 | GPT-4o Aug 2024 | 0.34% | Aug 2024 | Epoch AI | |
| 66 | Claude 3.5 Haiku | 0.34% | Oct 2024 | Oct 2024 | Epoch AI |
| 67 | | 0.34% | Nov 2024 | Epoch AI | |
| 68 | GPT-4o Nov 2024 | 0.34% | Nov 2024 | Epoch AI | |
| 69 | | 0% | Sep 2024 | Epoch AI | |
| 70 | | 0% | Apr 2025 | Epoch AI |
Labs report scores for 11 models in their cards. We plot every source in the charts below.
10 models have held number one since its release in Nov 2024
Lab claims count from the day the card came out, independent runs from the model’s release. We draw one row each for Epoch AI’s runs and what labs claim in their cards.
Scores over time
All the scores we have, one dot each, so a model tested at several settings appears more than once.
Labs headline it less often now, last in Jun 2026
Launch posts from every lab that has listed it, one tick per post. Tall colored ticks include it, and short gray ones leave it out.
| Date | Launch post | Score | As the post writes it |
|---|---|---|---|
| 2 Jun 2026 | 6.3 | Frontier Math (Tier 1-3) | |
| 23 Apr 2026 | GPT-5.5 Pro | 52.4 | FrontierMath Tier 1-3 |
| 23 Apr 2026 | GPT-5.5 | 52.4 | FrontierMath Tier 1–3 (GPT-5.5 Pro) |
| 5 Mar 2026 | GPT-5.4 Pro | 50 | FrontierMath Tier 1-3 |
| 11 Dec 2025 | GPT-5.2 | 40.3 | FrontierMath (Tier 1–3) Advanced mathematics |
| 13 Nov 2025 | GPT-5.1 | 26.7 | FrontierMath (with Python tool) |
| 7 Aug 2025 | GPT-5 nano | 9.6 | FrontierMath (with python tool only) |
| 7 Aug 2025 | GPT-5 mini | 22.1 | FrontierMath (with python tool only) |
| 7 Aug 2025 | GPT-5 | 32.1 | FrontierMath, Tier 1-3, GPT-5 pro (python) |
| 17 Jul 2025 | ChatGPT agent | 27.4 | FrontierMath Tier 1-3, with tools (text) |
| 31 Jan 2025 | o3-mini | 9.2 | FrontierMath Pass@1 |
One system card reports it
Besides launch posts, we read the system cards, model cards and technical reports labs publish with a release. They report far more, including safety and frontier-risk tests.
| Date | Document | Score | As the document writes it | Section |
|---|---|---|---|---|
| 2 Jun 2026 | | 6.3 | Frontier Math Tier 1-3, Acc, version not stated (Core reasoning table) | Capabilities |
Versions
We switch the top row to each new version when it comes out. Open it for one row per version. An old version stays in play while people still test it, so whoever first takes it past 85% gets credit for closing it out.
More in Math
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- AIME 2026 In use Models solve the 30 integer-answer problems from the 2026 AIME I and II math competitions. Scored by exact answer match. GPT-5.5 100%
- HMMT 2026 In use Models solve the 33 final-answer problems from the February 2026 Harvard-MIT Mathematics Tournament. Scored by exact answer match. GPT-5.5 98.5%
- MathArena (Apex, IMO, USAMO) In use Evaluates models on newly released math competitions after release. Final-answer or human/LLM-judged proof scores. Claude Opus 4.8 81.3%
- PolyMath In use Models solve 9,000 parallel math problems in 18 languages across four difficulty levels, from school math to frontier math. Final answers are checked.
Qwen3.7-Max 86.5%
- USAMO 2026 In use Models write full proofs for the six problems of the 2026 USA Mathematical Olympiad. Judges grade each proof from 0 to 7 against rubrics. GPT-5.5 98.2%