Qwen3-Coder-NextvsComposer 2
Qwen3-Coder-Next | Composer 2 | |
|---|---|---|
| Specifications | ||
Parameters | 80B | — |
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. | 44.3% | — |
Coding SWE-Bench VerifiedReal coding tasks pulled from open-source projects — the AI has to find and fix actual bugs. A human-checked version of the original SWE-Bench. Higher is better. | 70.6% | — |
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. | 62.8% | 73.7%Best |
Agentic coding CursorBench v3.1Cursor's own test of harder, real-world coding tasks inside a code editor. Higher is better. | — | 52.2% |
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% |
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. | 36.2% | 61.7%Best |
| Overview | ||
| Company | Qwen | SpaceXAI |
| Release date | Feb 3 2026 | Mar 19 2026 |
| Access | Open Weight | Proprietary |
Which is better: Qwen3-Coder-Next or Composer 2?
Composer 2 leads Qwen3-Coder-Next on 2 of the 2 benchmarks they both report (SWE-Bench Multilingual, Terminal-Bench 2.0). Qwen3-Coder-Next shipped 44 days before Composer 2, so benchmark comparisons should account for the intervening progress.
Qwen3-Coder-Next is open weight, while Composer 2 is proprietary.
On SWE-Bench Multilingual, Composer 2 leads at 73.7% vs Qwen3-Coder-Next at 62.8%. On Terminal-Bench 2.0, Composer 2 leads at 61.7% vs Qwen3-Coder-Next at 36.2%.
Frequently asked questions
Qwen3-Coder-Next was released by Qwen on Feb 3 2026.
Composer 2 was released by SpaceXAI on Mar 19 2026.
Composer 2 leads on SWE-Bench Multilingual — Qwen3-Coder-Next 62.8% vs Composer 2 73.7%.
Qwen3-Coder-Next is an open weight model released by Qwen. Composer 2 is a proprietary model released by SpaceXAI.