GPT-5.3-Codex-SparkvsQwen3-Coder-Next
GPT-5.3-Codex-Spark | Qwen3-Coder-Next | |
|---|---|---|
| Specifications | ||
Parameters | — | 80B |
Context window | 128k | 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% |
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 | OpenAI | Qwen |
| Release date | Feb 12 2026 | Feb 3 2026 |
| Access | Proprietary | Open Weight |
Which is better: GPT-5.3-Codex-Spark or Qwen3-Coder-Next?
GPT-5.3-Codex-Spark and Qwen3-Coder-Next don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. Qwen3-Coder-Next shipped 9 days before GPT-5.3-Codex-Spark, so benchmark comparisons should account for the intervening progress.
Context windows are 128k (GPT-5.3-Codex-Spark) vs 256k (Qwen3-Coder-Next). GPT-5.3-Codex-Spark is proprietary, while Qwen3-Coder-Next is open weight.
Direct benchmark comparisons are unavailable — GPT-5.3-Codex-Spark and Qwen3-Coder-Next don't publish scores on any of the same benchmarks.
Frequently asked questions
GPT-5.3-Codex-Spark was released by OpenAI on Feb 12 2026.
Qwen3-Coder-Next was released by Qwen on Feb 3 2026.
GPT-5.3-Codex-Spark has a 128k context window; Qwen3-Coder-Next has 256k.
GPT-5.3-Codex-Spark is a proprietary model released by OpenAI. Qwen3-Coder-Next is an open weight model released by Qwen.