Detailed comparison of capabilities, features, and performance.
| Feature | Claude Fable 5 | Qwen 3.8 Max |
|---|---|---|
| AI Lab | Anthropic | Alibaba |
| Context Size | 1,000,000 tokens | 262,144 tokens |
| Max Output Size | 128,000 tokens | 32,768 tokens |
| Frontier Model | Yes | Yes |
| Vision Support | Yes | Yes |
| Description | Anthropic's most capable widely released model, with a 1M token context window, 128k max output, and always-on adaptive thinking. | Alibaba's most capable closed flagship, built on the Qwen3.5 architecture with major gains in coding, research and long-horizon agentic work. Vision, function calling and a 262k context window. Available exclusively through Fireworks AI. |
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