Overview
Agentic coding model from kwaikat (kuaishou) trained inside executable repositories via autobuilder. Served on streamlake; open-weight Dev variant on Hugging Face (Apache-2.0).
Recent Developments
- 2026-07: Tech report arXiv 2607.05471; PinchBench lead 94.9; SWE-Bench Pro 65.2 (2nd behind Opus 4.8) under Claude Code harness (2026-07-26-kat-coder-v2-5-arxiv)
- Dev open weights: 35B-A3B MoE — separate card numbers from served model
Warning
Do not conflate served V2.5 bench numbers with Dev open-weight card numbers. Vendor-run / harness-matched.