APEX-SWE: A Real-World Test for AI Coders

APEX-SWE: A Real-World Test for AI Coders

Can AI ship real software?

Meet APEX-SWE, a new benchmark that tests whether frontier AI models can do economically valuable software engineering—not just toy coding puzzles.

  • Integration tasks (n=100): build end-to-end systems across cloud primitives, business apps, and infrastructure-as-code.
  • Observability tasks (n=100): debug production failures using logs, dashboards, and unstructured context.

Across eight models, Gemini 3 Pro (Thinking = High) ranked first with Pass@1 = 25%. The analysis highlights a key driver of success: epistemic reasoning—separating assumptions from verified facts—plus the agency to reduce uncertainty before acting.

The team open-sources the evaluation harness and a 50-task dev set, inviting the community to build, test, and iterate on AI that can truly ship.

Paper: https://arxiv.org/abs/2601.08806v1

Paper: https://arxiv.org/abs/2601.08806v1

Register: https://www.AiFeta.com

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