Kat Coder Pro V2.5
Kat Coder Pro V2.5 is the flagship of KwaiPilot's KAT-Coder V2.5 generation. It scores 65.2 on SWE-Bench Pro and 94.9 on PinchBench, with a context window of 256K tokens and output up to 80K tokens. Your use is subject to KwaiPilot's Terms & Privacy Policies.
import { streamText } from 'ai'
const result = streamText({ model: 'kwaipilot/kat-coder-pro-v2.5', prompt: 'Why is the sky blue?'})About Kat Coder Pro V2.5
Kat Coder Pro V2.5 is the flagship model in KwaiPilot's KAT-Coder V2.5 generation, released July 10, 2026. A task starts from a natural-language issue and ends with a verified change. Kat Coder Pro V2.5 locates the relevant code across files, follows the repository's existing conventions, edits, and runs tests to confirm the change holds.
On SWE-Bench Pro, which measures repository-level software engineering, Kat Coder Pro V2.5 scores 65.2 and ranks second in KwaiPilot's published comparison, behind Opus 4.8 at 69.2. On PinchBench, an agentic tool-use benchmark, Kat Coder Pro V2.5 records 94.9, the top result in that comparison. It also scores 53.1 on KAT Code Bench, 60.7 on Terminal-Bench 2.1, and 50.3 on SciCode. Every model in that comparison ran under the same Claude Code harness, tool set, context budget, and decoding configuration.
Kat Coder Pro V2.5 supports streaming output, context caching, function calling, and MCP (Model Context Protocol), and KwaiPilot lists coverage of more than 20 mainstream programming languages including C, C++, Java, and Python. Cached input reads bill at $0.15 per million tokens, which matters for agent loops that resend the same repository context turn after turn. Route requests through AI Gateway to reach Kat Coder Pro V2.5 via StreamLake. Product details sit at .