GPT-5.3-Codex-SparkvsQwen1.5
GPT-5.3-Codex-Spark | Qwen1.5 | |
|---|---|---|
| Specifications | ||
Parameters | — | 72B |
Context window | 128k | 32k |
| Overview | ||
| Company | OpenAI | Qwen |
| Release date | Feb 12 2026 | Feb 4 2024 |
| Access | Proprietary | Open Weight |
Which is better: GPT-5.3-Codex-Spark or Qwen1.5?
GPT-5.3-Codex-Spark and Qwen1.5 don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. Qwen1.5 shipped 739 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 32k (Qwen1.5). GPT-5.3-Codex-Spark is proprietary, while Qwen1.5 is open weight.
Direct benchmark comparisons are unavailable — GPT-5.3-Codex-Spark and Qwen1.5 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.
Qwen1.5 was released by Qwen on Feb 4 2024.
GPT-5.3-Codex-Spark has a 128k context window; Qwen1.5 has 32k.
GPT-5.3-Codex-Spark is a proprietary model released by OpenAI. Qwen1.5 is an open weight model released by Qwen.