GPT-5.3-Codex vs Qwen3.6 Plus
OpenAI vs Alibaba — benchmarks, pricing, and capabilities side by side.
- •GPT-5.3-Codex has the higher intelligence index (91.5 vs 88.2)
- •Qwen3.6 Plus is cheaper ($0.33 vs $1.75 per 1M input)
- •GPT-5.3-Codex is faster
- •Qwen3.6 Plus has a larger context window (1M)
| GPT-5.3-Codex | Qwen3.6 Plus | |
|---|---|---|
| Intelligence index | 91.5 | 88.2 |
| Developer | OpenAI | Alibaba |
| Type | Multimodal | Multimodal |
| Access | API only | API only |
| Context window | 400,000 tokens | 1,000,000 tokens |
| Input price | $1.75 / 1M | $0.33 / 1M |
| Output price | $14.00 / 1M | $1.95 / 1M |
| Speed | 73 tok/s | 52 tok/s |
| Released | February 24, 2026 | April 2, 2026 |
| Parameters | — | — |
| Input modalities | Text, Image | Text, Image, Video |
| Output modalities | Text | Text |
Shared benchmarks
GPT-5.3-Codex
Qwen3.6 Plus
GPQA Diamond
91.5
88.2
Humanity’s Last Exam
39.9
25.7