FrontierCode 1.1

An implementation of Cognition's FrontierCode 1.1, a private agentic coding benchmark that tests models on completing coding tasks in a way that would actually get merged by maintainers of real-world repositories.

Models: 75 current, 83 in total
Median: 38.8%
Range: 0.0%–64.0%

Score distribution

Lowest: 0.0%
Median: 38.8%
Highest: 64.0%

Leaderboard

Include deprecated models

Rank	Model	Score
1	Claude Fable 5.2 (Medium, Default Fallback) Anthropic	64.0%
2	Claude Fable 5.2 (Low, Default Fallback) Anthropic	60.6%
3	Claude Opus 5.5 (Medium, Default Fallback) Anthropic	57.1%
4	Claude Fable 5.2 (Max, Default Fallback) Anthropic	56.2%
5	Claude Fable 5.2 (High, Default Fallback) Anthropic	55.9%
6	Claude Fable 5.2 (Xhigh, Default Fallback) Anthropic	55.5%
7	Claude Opus 5.5 (High, Default Fallback) Anthropic	54.0%
8	Claude Opus 5.5 (Xhigh, Default Fallback) Anthropic	53.5%
9	Claude Opus 5.5 (Max, Default Fallback) Anthropic	52.2%
10	GPT-6.1 Sol (Max) OpenAI	49.1%
11	Kimi K3.1 Pro Kimi	47.1%
12	GPT-6 Astra (Max) OpenAI	47.0%
13	GPT-6.1 Sol (High) OpenAI	46.6%
14	Muse Wonder (Max) Meta	46.5%
15	GPT-6.1 Sol (Xhigh) OpenAI	46.3%
16	Claude Sonnet 5.5 (Xhigh, Default Fallback) Anthropic	46.1%
17	Claude Sonnet 5.5 (Max, Default Fallback) Anthropic	45.8%
18	Claude Haiku 5.5 (Xhigh) Anthropic	45.5%
19	MiMo-V2.6-Pro Xiaomi	45.4%
20	Muse Wonder Full (Max) Meta	44.9%
21	Claude Sonnet 5.5 (High, Default Fallback) Anthropic	44.3%
22	GPT-6.1 Terra (Medium) OpenAI	43.7%
23	DeepSeek V4.1 Flash 1017 (Max) DeepSeek	43.7%
24	Claude Haiku 5.5 (High) Anthropic	43.6%
25	Gemini 4 Argon (High) Google	43.5%
26	GPT-6.1 Sol (Medium) OpenAI	43.3%
27	Qwen3.8 Max (0902) Alibaba	43.2%
28	Claude Opus 5.5 (Low, Default Fallback) Anthropic	42.7%
29	MiMo-V2.6-Flash Xiaomi	42.1%
30	GPT-6 Luna (Max) OpenAI	41.9%
31	Claude Haiku 5.5 (Max) Anthropic	41.8%
32	GPT-6.1 Terra (Xhigh) OpenAI	41.4%
33	GPT-6.1 Terra (Non-reasoning) OpenAI	41.0%
34	GLM-5.3-Flash Z AI	41.0%
35	Claude Haiku 5.5 (Medium) Anthropic	40.4%
36	GLM-5.3 (Max) Z AI	40.1%
37	Grok 4.7 (Low) SpaceXAI	39.6%
38	DeepSeek V4 Pro 0813 (Max) DeepSeek	38.8%
39	MiniMax-M3.1-Flash MiniMax	38.6%
40	Step 5 Preview StepFun	38.4%
41	Mistral Large 4 (Medium) Mistral	37.8%
42	GPT-6.1 Terra (High) OpenAI	37.2%
43	Gemini 3.8 Flash (Medium) Google	37.1%
44	GPT-6.1 Sol (Low) OpenAI	36.7%
45	Gemini 3.8 Flash (High) Google	36.4%
46	GPT-6.1 Terra (Low) OpenAI	36.3%
47	GPT-6.1 Terra (Max) OpenAI	36.0%
48	GLM-5.3 (Low) Z AI	34.9%
49	Qwen3.8 27B (Medium) Alibaba	34.7%
50	Qwen3.8 27B (Xhigh) Alibaba	34.2%

1
Claude Fable 5.2 (Medium, Default Fallback)
Anthropic
64.0%
2
Claude Fable 5.2 (Low, Default Fallback)

Data from Artificial Analysis

Command Palette

FrontierCode 1.1

Score distribution

Leaderboard