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ProgramBench

Code · 2026-05-05

Reverse-engineering benchmark in which an agent is given only a compiled executable and its documentation and must re-implement the program without access to any of its source. Scored across 200 tasks, from small utilities to projects the size of FFmpeg and SQLite, against more than 248,000 hidden behavioral tests. There is no partial credit: a task resolves only if every test for it passes.

Top models (higher is better)

ModelScore
Claude Sonnet 5.56.5
GPT-6 Astra5.5
GPT-6.1 Sol3.0
Claude Haiku 5.52.5
Gemini 4 Argon2.5
Muse Spark 1.32.5
GPT-6 Sol2.0
Kimi K32.0
GLM-5.31.5
GPT-5.6 Sol1.5
Opus 4.81.0
Gemini 3.8 Flash1.0
Grok 4.61.0
Sonnet 4.60.5
DeepSeek V4.1 Flash0.5
GLM-5.20.5
GPT-5.40.5
GPT-5.50.5
GPT-5.6 Terra0.5
GPT-6 Luna0.5
Grok 4.70.5
Inkling-Small0.5
MiMo-V2.6-Flash0.5
MiMo-V2.6-Pro0.5
Muse Spark 1.20.5
Muse Wonder Full0.5
Haiku 4.50.0
Opus 4.70.0
Sonnet 50.0
DeepSeek-V4-Flash-07310.0
DeepSeek V4 Pro 08130.0
DeepSeek-V4-Pro0.0
Gemini 3.1 Flash-Lite Preview0.0
Gemini 3.1 Pro Preview0.0
Gemini 3.5 Flash0.0
Gemini 3.5 Flash-Lite0.0
Gemini 3.6 Flash0.0
Gemini 3.7 Flash0.0
Gemini 3 Flash Preview0.0
GLM-5.10.0
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