Detailed comparison of capabilities, features, and performance.
| Feature | GPT-5.1 codex | Qwen 3.6 Plus |
|---|---|---|
| AI Lab | OpenAI | Alibaba |
| Context Size | 400,000 tokens | 131,072 tokens |
| Max Output Size | 128,000 tokens | 16,384 tokens |
| Frontier Model | Yes | Yes |
| Vision Support | Yes | Yes |
| Description | A version of GPT-5.1 optimized for agentic coding tasks. | Alibaba's latest flagship closed model with vision capabilities, function calling, and Mixture-of-Experts architecture. Available exclusively through Fireworks AI. |
View detailed specifications and capabilities
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