FrontierMath Tier 4 (v2) · Open Analysis

#	Model	Effort	Score	Cost / task	Harness
1	GPT-6.1 Sol	max	100.0%	–	Epoch AI
2	GPT-6 Astra	high	97.6%	–	Epoch AI
3	Opus 5.5	max	95.0%	–	Epoch AI
4	Fable 5	max	90.2%	–	Epoch AI
5	GPT-6 Sol	max	90.0%	–	Epoch AI
6	Fable 5.1	max	87.8%	–	Epoch AI
7	GPT-5.6 Sol	max	82.9%	–	Epoch AI
8	Sonnet 5.5	max	80.5%	–	Epoch AI
9	GPT-5.6 Sol Pro	max	80.5%	–	Epoch AI
10	Gemini 4	high	78.0%	–	Epoch AI
11	GPT-5.5 Pro	xhigh	78.0%	–	Epoch AI
12	Opus 5	max	73.2%	–	Epoch AI
13	GPT-5.5	xhigh	72.5%	–	Epoch AI
14	GPT-5.6 Terra	max	70.7%	–	Epoch AI
15	GPT-5.6 Luna	max	61.0%	–	Epoch AI
16	GPT-5.4 Pro	xhigh	58.5%	–	Epoch AI
17	GPT-6 Luna	max	56.1%	–	Epoch AI
18	Opus 4.8	max	56.1%	–	Epoch AI
19	GPT-5.4	xhigh	49.0%	–	Epoch AI
20	Haiku 5.5	max	46.3%	–	Epoch AI
21	Muse Spark 1.3	max	46.3%	–	Epoch AI
22	GPT-5.2 Pro	xhigh	46.0%	–	Epoch AI
23	Kimi K3	max	39.0%	–	Epoch AI
24	Gemini 3.7 Flash	high	36.6%	–	Epoch AI
25	Qwen 3.8 Max	xhigh	34.1%	–	Epoch AI
26	Qwen 3.7 Max	max	34.1%	–	Epoch AI
27	Grok 4.6	xhigh	31.7%	–	Epoch AI
28	Opus 4.7	max	31.7%	–	Epoch AI
29	GPT-5.2	xhigh	31.7%	–	Epoch AI
30	GLM 5.3	max	29.3%	–	Epoch AI
31	Sonnet 5	max	29.3%	–	Epoch AI
32	GLM 5.2	max	29.3%	–	Epoch AI
33	Mistral Large 4	high	26.8%	–	Epoch AI
34	DeepSeek V4.1 Flash	max	26.8%	–	Epoch AI
35	DeepSeek V4 Pro 0813	max	26.8%	–	Epoch AI
36	Gemini 3.1 Pro	high	26.8%	–	Epoch AI
37	Opus 4.6	max	26.8%	–	Epoch AI
38	Gemini 3.5 Flash	high	26.8%	–	Epoch AI
39	Kimi K2.6	max	25.6%	–	Epoch AI
40	DeepSeek V4 Flash 0731	max	24.4%	–	Epoch AI
41	Grok 4.5	high	24.4%	–	Epoch AI
42	Gemini 3.8 Flash	high	22.0%	–	Epoch AI
43	Gemini 3.6 Flash	high	22.0%	–	Epoch AI
44	GPT-5	high	22.0%	–	Epoch AI
45	GPT-5 Pro	high	19.5%	–	Epoch AI
46	Grok 4.7	xhigh	17.1%	–	Epoch AI
47	GLM 5.3 Flash	max	17.1%	–	Epoch AI
48	Inkling Small	xhigh	17.1%	–	Epoch AI
49	Grok 4.20	xhigh	17.1%	–	Epoch AI
50	Gemini 3 Flash	high	17.1%	–	Epoch AI
51	Grok 4.3	high	14.6%	–	Epoch AI
52	Kimi K2.7 Code	max	12.2%	–	Epoch AI
53	GPT-5 Mini	high	12.2%	–	Epoch AI
54	GPT-5.4 Nano	high	12.2%	–	Epoch AI
55	GPT-5.4 Mini	xhigh	9.8%	–	Epoch AI
56	Inkling	xhigh	4.9%	–	Epoch AI
57	o4 mini	high	4.9%	–	Epoch AI
58	Opus 4.5	high	4.9%	–	Epoch AI
59	GPT-5.5 Instant	–	2.4%	–	Epoch AI
60	DeepSeek V4 Pro	max	2.4%	–	Epoch AI
61	GPT-5 Nano	high	2.4%	–	Epoch AI
62	Opus 4.1	high	2.4%	–	Epoch AI
63	Sonnet 4.5	high	2.4%	–	Epoch AI
64	Gemini 3.5 Flash-Lite	high	0.0%	–	Epoch AI
65	Gemini 2.5 Pro	high	0.0%	–	Epoch AI
66	o3 mini	high	0.0%	–	Epoch AI