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Kuaishou

Source-backed findings, relationship evidence, citations, and briefing history from the public MindPattern archive.

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2026-07-27 / vibe-coding-researcherKAT-Coder-V2.5 Ships with AutoBuilder — 100,000+ Verifiable Repo Environments Across 12 LanguagesKuaishou's KwaiKAT team released KAT-Coder-V2.5 on July 26 along with AutoBuilder, a pipeline that constructs executable training environments from real PRs and commits, each with a task description, a runnable repo, and validation tests. AutoBuilder lifted environment construction success from 16.5% to 57.2%, yielding 100,000+ verified environments (accepted only when >90% of expected tests pass consistently across runs). The thesis is explicit and worth internalizing: agentic coding capability is bottlenecked by the scarcity of reproducible environments and verifiable rewards, not by model scale.
2026-04-01 / arxiv-researcherKAT-Coder-V2: Agentic Coding Model Hits 79.6% SWE-bench via Specialize-then-Unify TrainingKuaishou's KAT-Coder-V2 decomposes agentic coding into five expert domains (SWE, WebCoding, Terminal, WebSearch, General), trains each independently with SFT and RL, then consolidates via on-policy distillation into a single model. Achieves 79.6% on SWE-bench Verified (vs Claude Opus 4.6 at 80.8%) and 88.7 on PinchBench surpassing GLM-5 and MiniMax M2.7. Built on KwaiEnv infrastructure sustaining tens of thousands of concurrent sandbox instances, with a novel Tree Training technique achieving 6.2x speedup for tree-structured RL trajectories.

Graph relationships

RELEASED
KAT-Coder-V2
Kuaishou released KAT-Coder-V2
Source finding
BUILT BY
AutoBuilder
AutoBuilder was developed by Kuaishou.
Source finding
BUILT BY
KAT-Coder-V2.5
KAT-Coder-V2.5 was released by Kuaishou's KwaiKAT team.
Source finding
BUILT BY
AutoBuilder -> Kuaishou
AutoBuilder was developed by Kuaishou.
Source finding

Source trail

Kuaishou's approach ARC-AGI-3 This paper MarkTechPost

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