Anthropic's Claude Fable 5.1 and Moonshot AI's Kimi K3.1 Pro compared on specs, pricing, and capabilities — as configured in AI Crucible ensembles.
| Specification | Claude Fable 5.1 | Kimi K3.1 Pro |
|---|---|---|
| Provider | Anthropic | Moonshot AI |
| API model ID | claude-fable-5-1 | kimi-k3.1-pro |
| Description | Anthropic's most capable model, for demanding reasoning and long-horizon agentic work, with 1M context and always-on adaptive thinking. | Moonshot AI's most capable flagship, a 3T-parameter model for coding, agents, and deep reasoning, with vision and 1M context. |
| Context window | 1M tokens | 1.048576M tokens |
| Max output tokens | 32,768 | 8,192 |
| Input cost ($/1M tokens) | $12.00 | $2.40 |
| Output cost ($/1M tokens) | $60.00 | $12.00 |
| Cache read cost ($/1M tokens) | $0.30 | $0.24 |
| Latency | high | high |
| Reasoning model | Yes | Yes |
| Vision (image input) | Yes | Yes |
| Tool use | Yes | Yes |
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