GPT-5.3 Codex vs Qwen3.5 27B: Specs & Benchmark Comparison
| Characteristic | GPT-5.3 Codex | Qwen3.5 27B |
|---|---|---|
| Company | OpenAI | Alibaba |
| Release Date | February 5, 2026 | March 1, 2026 |
| Parameters | — | 27B |
| Multimodal | Yes | No |
| Context (input) | 400K | — |
| Context (output) | 128K | — |
| Input Price / 1M | $1.75 | — |
| Output Price / 1M | $14.00 | — |
| Average Score | 0.7 | 0.9 |
Verdict
Qwen3.5 27B leads in 1 out of 2 comparison categories.
Overall Performance
Both models show comparable average scores: GPT-5.3 Codex — 0.7, Qwen3.5 27B — 0.9.
Recency
Qwen3.5 27B is newer: released 3/1/2026 vs 2/5/2026.
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The GPT-5.3 Codex and Qwen3.5 27B comparison is updated for 2026. Data includes benchmark results, API pricing, context window size and other specifications. For more detailed information, visit the GPT-5.3 Codex or Qwen3.5 27B page. See also the complete list of AI model comparisons.