Kimi K2.7 CodevsComposer 2
Kimi K2.7 Code | Composer 2 | |
|---|---|---|
| Specifications | ||
Parameters | 1T | — |
Context window | 256k | — |
| Benchmarks | ||
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. | — | 73.7% |
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% | — |
Agentic coding CursorBench v3.1Cursor's own test of harder, real-world coding tasks inside a code editor. Higher is better. | — | 52.2% |
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% | — |
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% | 75% |
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. | — | 61.7% |
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 | Mar 19 2026 |
| Access | Open Weight | Proprietary |
Which is better: Kimi K2.7 Code or Composer 2?
Kimi K2.7 Code and Composer 2 are evenly matched across the 1 benchmark they both report (Next.js Evals). Composer 2 shipped 85 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 is proprietary.
On Next.js Evals, both models score 75%.
Frequently asked questions
Kimi K2.7 Code was released by Moonshot AI on Jun 12 2026.
Composer 2 was released by SpaceXAI on Mar 19 2026.
Kimi K2.7 Code is an open weight model released by Moonshot AI. Composer 2 is a proprietary model released by SpaceXAI.
Other comparisons
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