SWE-Lancer (IC-Diamond subset)
SWE-Lancer (IC-Diamond subset) is a benchmark of real-world freelance software engineering tasks from Upwork, ranging from $50 bug fixes to $32,000 feature implementations. It evaluates AI models on independent engineering tasks using end-to-end tests triple-verified by experienced software engineers, and includes managerial tasks where models choose between technical implementation proposals.
GPT-5 from OpenAI currently leads the SWE-Lancer (IC-Diamond subset) leaderboard with a score of 1.000 across 6 evaluated AI models.
GPT-5 leads with 100.0%, followed by GPT-5.3 Codex at 81.4% and GPT-5.2 at 74.6%.
Progress Over Time
Interactive timeline showing model performance evolution on SWE-Lancer (IC-Diamond subset)
SWE-Lancer (IC-Diamond subset) Leaderboard
FAQ
Common questions about SWE-Lancer (IC-Diamond subset).
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