GPT-5.3-Codex-SparkvsQwen3
GPT-5.3-Codex-Spark | Qwen3 | |
|---|---|---|
| Specifications | ||
Parameters | — | 235B |
Context window | 128k | 128k |
| Overview | ||
| Company | OpenAI | Qwen |
| Release date | Feb 12 2026 | Apr 29 2025 |
| Access | Proprietary | Open Weight |
Which is better: GPT-5.3-Codex-Spark or Qwen3?
GPT-5.3-Codex-Spark and Qwen3 don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. Qwen3 shipped 289 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 128k (Qwen3). GPT-5.3-Codex-Spark is proprietary, while Qwen3 is open weight.
Direct benchmark comparisons are unavailable — GPT-5.3-Codex-Spark and Qwen3 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 was released by Qwen on Apr 29 2025.
GPT-5.3-Codex-Spark has a 128k context window; Qwen3 has 128k.
GPT-5.3-Codex-Spark is a proprietary model released by OpenAI. Qwen3 is an open weight model released by Qwen.