Kimi K2.7 CodevsComposer 2.5
Kimi K2.7 Code | Composer 2.5 | |
|---|---|---|
| Specifications | ||
Parameters | 1T | — |
Context window | 256k | — |
| Benchmarks | ||
Agentic coding SWE-Bench ProCan the AI fix real bugs in real software? It's handed actual problems from open-source projects and has to write code that genuinely solves them. Higher is better. | — | 54% |
Multilingual coding SWE-Bench MultilingualLike SWE-Bench, but the coding problems span many programming languages, not just one. Tests how broadly the AI can code. Higher is better. | — | 79.8% |
Agentic coding CursorBench v3.2Cursor's own test of harder, real-world coding tasks inside a code editor, on the refreshed v3.2 task set. Scores aren't comparable with v3.1. Higher is better. | 49.7% | 56.1%Best |
Agentic coding CursorBench v3.1Cursor's own test of harder, real-world coding tasks inside a code editor. Higher is better. | — | 63.2% |
Agentic coding DeepSWE 1.1Artificial Analysis' independent test of deep, agentic software-engineering work — the AI has to plan and carry out substantial coding tasks end to end. (Version 1.1 of the test.) Higher is better. | 31% | — |
Agentic coding DeepSWE 1.0Artificial Analysis' independent test of deep, agentic software-engineering work — the AI has to plan and carry out substantial coding tasks end to end. Higher is better. | — | 18% |
Next.js coding Next.js EvalsVercel's open eval of how well AI coding agents build and migrate real Next.js apps — measured as the share of tasks the agent completes successfully. Higher is better. | 75% | 92%Best |
Agentic terminal coding Terminal-Bench 2.1Can the AI work in a command-line terminal — running commands and finishing technical setup tasks the way a developer would? Higher is better. | — | 73% |
Agentic terminal coding Terminal-Bench 2.0Can the AI work in a command-line terminal — running commands and finishing technical setup tasks the way a developer would? (Version 2.0 of the test.) Higher is better. | — | 69.3% |
Community preference (code) Arena Elo (Code)Like the text arena, but people vote on which AI writes better code. The votes become a chess-style Elo rating on arena.ai. Higher is better. | 1469 | — |
| Overview | ||
| Company | Moonshot AI | SpaceXAI |
| Release date | Jun 12 2026 | May 18 2026 |
| Access | Open Weight | Proprietary |
Which is better: Kimi K2.7 Code or Composer 2.5?
Composer 2.5 leads Kimi K2.7 Code on 2 of the 2 benchmarks they both report (CursorBench v3.2, Next.js Evals). Composer 2.5 shipped 25 days before Kimi K2.7 Code, so benchmark comparisons should account for the intervening progress.
Kimi K2.7 Code is open weight, while Composer 2.5 is proprietary.
On CursorBench v3.2, Composer 2.5 leads at 56.1% vs Kimi K2.7 Code at 49.7%. On Next.js Evals, Composer 2.5 leads at 92% vs Kimi K2.7 Code at 75%.
Frequently asked questions
Kimi K2.7 Code was released by Moonshot AI on Jun 12 2026.
Composer 2.5 was released by SpaceXAI on May 18 2026.
Composer 2.5 leads on CursorBench v3.2 — Kimi K2.7 Code 49.7% vs Composer 2.5 56.1%.
Kimi K2.7 Code is an open weight model released by Moonshot AI. Composer 2.5 is a proprietary model released by SpaceXAI.