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Math proofs (ProofBench)

Proof problems at the level of math competitions and graduate courses; the model writes a proof and it is graded for correctness.

How to read this table

  • Higher rows are rated higher. A range like “1–2” means the gap is within the margin of error.
  • The score is the value published by the task's authors and other organizations.
  • Conditions can differ between models, so small gaps do not mean much.
  • Prices are a guide per million tokens, reading then writing.
  • Length is how much text the model can read at once (tokens).
RankModelDeveloperAccuracy
(%)
Accuracy scale 0 to 100
Input $
/1M
Output $
/1M
ContextSupportsWeightsReleasedPrice and specs
1–5Claude Fable 5.1AnthropicRating 100.0$10$501MAnthropic Released 2026-⁠09 Price $10 / $50 Length 1M
1–5Claude Opus 5.5AnthropicRating 100.0$4$201MAnthropic Released 2026-⁠09 Price $4 / $20 Length 1M
1–5Claude Sonnet 5.5AnthropicRating 100.0$2$101MAnthropic Released 2026-⁠09 Price $2 / $10 Length 1M
1–9Claude Opus 5AnthropicRating 99.0 ±8.2$5$251MAnthropic Released 2026-⁠07 Price $5 / $25 Length 1M
4–8Gemini 4 ArgonGoogleRating 99.0$2$101.05MGoogle Released 2026-⁠09 Price $2 / $10 Length 1.05M
4–8GPT-6.1 SolOpenAIRating 99.0$2$101.05MOpenAI Released 2026-⁠09 Price $2 / $10 Length 1.05M
4–8GPT-6 AstraOpenAIRating 99.0$10$501.05MOpenAI Released 2026-⁠09 Price $10 / $50 Length 1.05M
1–10Claude Fable 5AnthropicRating 95.0 ±8.3$10$501MAnthropic Released 2026-⁠06 Price $10 / $50 Length 1M
8–11Claude Haiku 5.5AnthropicRating 89.0$0.1$0.51MAnthropic Released 2026-⁠10 Price $0.1 / $0.5 Length 1M
7–14Kimi K3⁠MoonshotRating 87.0 ±9.0$3$151.05MMoonshot Released 2026-⁠07 Price $3 / $15 Length 1.05M
10–13Muse WonderMetaRating 84.0$4$201.05MMeta Released 2026-⁠10 Price $4 / $20 Length 1.05M
9–16GPT-5.6 SolOpenAIRating 83.0 ±8.2$4$201.05MOpenAI Released 2026-⁠07 Price $4 / $20 Length 1.05M
11–14GPT-6 SolOpenAIRating 83.0$2$101.05MOpenAI Released 2026-⁠09 Price $2 / $10 Length 1.05M
10–18Claude Sonnet 5AnthropicRating 77.0 ±9.3$2$101MAnthropic Released 2026-⁠06 Price $2 / $10 Length 1M
13–17Tencent HY4 (preview)⁠TencentRating 75.0———Tencent Released 2026-⁠08 Price — Length —
13–18GPT-5.6 TerraOpenAIRating 74.0 ±8.9$2$121.05MOpenAI Released 2026-⁠07 Price $2 / $12 Length 1.05M
15–18MiMo-V2.6 Pro⁠XiaomiRating 70.0$0.435$0.871.05MXiaomi Released 2026-⁠09 Price $0.435 / $0.87 Length 1.05M
14–22Claude Opus 4.8AnthropicRating 69.0 ±9.1$5$251MAnthropic Released 2026-⁠05 Price $5 / $25 Length 1M
18–21GPT-6 LunaOpenAIRating 64.0$0.1$0.51.05MOpenAI Released 2026-⁠09 Price $0.1 / $0.5 Length 1.05M
19–23MiMo-V2.6 Flash⁠XiaomiRating 63.0$0.14$0.281.05MXiaomi Released 2026-⁠09 Price $0.14 / $0.28 Length 1.05M
18–31GPT-5.6 LunaOpenAIRating 60.0 ±9.8$0.2$1.21.05MOpenAI Released 2026-⁠07 Price $0.2 / $1.2 Length 1.05M
21–28Gemini 3.7 FlashGoogleRating 58.0$0.75$3.751.05MGoogle Released 2026-⁠08 Price $0.75 / $3.75 Length 1.05M
21–28Muse Spark 1.3MetaRating 58.0$1.25$4.251.05MMeta Released 2026-⁠09 Price $1.25 / $4.25 Length 1.05M
21–28Qwen3.8 MaxAlibabaRating 58.0$2$61MAlibaba Released 2026-⁠08 Price $2 / $6 Length 1M
24–29DeepSeek-V4 Flash (2026-⁠07)⁠DeepSeekRating 56.0——1MDeepSeek Released 2026-⁠07 Price — Length 1M
18–35GPT-5.4OpenAIRating 56.0 ±9.7$2.5$151.05MOpenAI Released 2026-⁠03 Price $2.5 / $15 Length 1.05M
20–35Claude Opus 4.7AnthropicRating 54.0 ±9.8$5$251MAnthropic Released 2026-⁠04 Price $5 / $25 Length 1M
25–31DeepSeek-V4.1 Flash⁠DeepSeekRating 54.0——1MDeepSeek Released 2026-⁠09 Price — Length 1M
26–32Grok 4.6xAIRating 51.0$2$6500KxAI Released 2026-⁠08 Price $2 / $6 Length 500K
21–38Claude Opus 4.6AnthropicRating 50.0 ±9.8$5$251MAnthropic Released 2026-⁠02 Price $5 / $25 Length 1M
28–33DeepSeek-V4 Pro (2026-⁠08)⁠DeepSeekRating 50.0$0.66$1.981MDeepSeek Released 2026-⁠08 Price $0.66 / $1.98 Length 1M
21–38GPT-5.5OpenAIRating 50.0 ±9.8$5$301.05MOpenAI Released 2026-⁠04 Price $5 / $30 Length 1.05M
29–34GLM-5.3⁠Z.aiRating 49.0$1.4$4.41MZ.ai Released 2026-⁠08 Price $1.4 / $4.4 Length 1M
30–36Gemini 3.8 FlashGoogleRating 48.0$0.75$3.751.05MGoogle Released 2026-⁠09 Price $0.75 / $3.75 Length 1.05M
26–41Claude Sonnet 4.6AnthropicRating 45.0 ±9.8$3$151MAnthropic Released 2026-⁠02 Price $3 / $15 Length 1M
33–40Muse Spark 1.2MetaRating 43.0$1.25$4.251.05MMeta Released 2026-⁠08 Price $1.25 / $4.25 Length 1.05M
34–41Step 5 (preview)StepFunRating 42.0$1.0461$2.9891MStepFun Released 2026-⁠09 Price $1.0461 / $2.989 Length 1M
32–43Muse Spark 1.1MetaRating 39.0 ±9.6$1.25$4.251MMeta Released 2026-⁠07 Price $1.25 / $4.25 Length 1M
35–45Claude Opus 4.5AnthropicRating 36.0 ±9.4$5$25200KAnthropic Released 2025-⁠11 Price $5 / $25 Length 200K
35–45Gemini 3.6 FlashGoogleRating 36.0 ±9.5$0.75$3.751.05MGoogle Released 2026-⁠07 Price $0.75 / $3.75 Length 1.05M

Best accuracy over time

2025-08-07Release date2026-10-12
How to read this page
  • The value is the share of proofs judged correct. Figures published by the organizations that made the tasks, among others, collected here.
  • The accuracy is the share of problems solved. A gap of 1 point is 1 question out of 100.
  • In the Supports column the icons are, from left: can use tools / can read images / can answer in a fixed format (JSON); faded means not supported or unknown.
  • Open-weights models have their contents (the weights) published, so you can also run them on your own computer or server. Models without the open-weights mark are normally used through the developer's own services (apps or API); for some models the weights status is unknown.
  • Names such as ChatGPT next to a model are the consumer services its developer offers. Check on the service itself whether that model is available there.

Data: Arena, Epoch AI, Swallow LLM team (CC BY 4.0), Models.dev (MIT), updated 2026-⁠10-⁠24, data sources