Claude 3.5 Sonnet (upgraded)vsQwen3-Coder-Next
Claude 3.5 Sonnet (upgraded) | Qwen3-Coder-Next | |
|---|---|---|
| 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. | 49% | 70.6%Best |
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% |
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% |
| Overview | ||
| Company | Anthropic | Qwen |
| Release date | Oct 22 2024 | Feb 3 2026 |
| Access | Proprietary | Open Weight |
Which is better: Claude 3.5 Sonnet (upgraded) or Qwen3-Coder-Next?
Qwen3-Coder-Next leads Claude 3.5 Sonnet (upgraded) on 1 of the 1 benchmark they both report (SWE-Bench Verified). Claude 3.5 Sonnet (upgraded) shipped 469 days before Qwen3-Coder-Next, so benchmark comparisons should account for the intervening progress.
Claude 3.5 Sonnet (upgraded) is proprietary, while Qwen3-Coder-Next is open weight.
On SWE-Bench Verified, Qwen3-Coder-Next leads at 70.6% vs Claude 3.5 Sonnet (upgraded) at 49%.
Frequently asked questions
Claude 3.5 Sonnet (upgraded) was released by Anthropic on Oct 22 2024.
Qwen3-Coder-Next was released by Qwen on Feb 3 2026.
Qwen3-Coder-Next leads on SWE-Bench Verified — Claude 3.5 Sonnet (upgraded) 49% vs Qwen3-Coder-Next 70.6%.
Claude 3.5 Sonnet (upgraded) is a proprietary model released by Anthropic. Qwen3-Coder-Next is an open weight model released by Qwen.