KAT-Coder-V2.5 and V2.5-Dev
Kuaishou's proprietary agentic coder KAT-Coder-V2.5 (July) got a 35B-total, 3B-active open sibling, V2.5-Dev, post-trained from Qwen3.6-35B-A3B.
The open Dev model reports 69.4 on SWE-bench Verified against Qwen3.5-27B's 68.6 in its own table and cuts abnormal tool-label outputs from 9.34% to 0.28%. Apache-2.0, text-only.
- Date
- Thursday, 23 July 2026
- Lab
- Kuaishou (Kwaipilot)
- Kind
- open-weights
- Access
- open weights
Figures
| Measure | Value | Measured by |
|---|---|---|
| SWE-bench Verified (Dev) | 69.4 vs Qwen3.6-35B-A3B 64.4 | company |
Open weights dated by HF repo (2026-07-23); the proprietary V2.5 appeared on OpenRouter 2026-07-10. Benchmarks are Kuaishou's.
Sources
This record was checked against its sources on 6 October 2026. How we check