Compare Kimi K3.1 Pro from Moonshot AI and Claude Fable 5.1 from Anthropic on key metrics including benchmarks, price, context length, and other model features. Access both models and hundreds of others through the AIHubMix API.
Kimi K3.1 Pro
Claude Fable 5.1Kimi K3.1 Pro is based on Moonshot AI’s Kimi K3.1, offering code generation and interactive content development capabilities for coding assistance, code analysis, and visual prototyping.
Claude-fable-5-1 is Anthropic's most capable newly released model, suitable for the most demanding reasoning and long-running agent work. Claude Fable 5.1, while keeping input and output prices the same as Claude Fable 5, reduces cache read prices to one quarter of the original and is more capable for long-running agent programming, multi-step research, and document, spreadsheet, and slide processing. (The model is extremely expensive and not recommended for casual use.)
Prices are per million tokens. Time to First Token and throughput are rolling averages measured on AIHubMix.
Promotional prices show the discounted rate; see each model page for promotion windows.
Daily traffic served through AIHubMix — how demand for each model is trending.
Measured on real AIHubMix traffic, hourly buckets. Gaps mean no traffic in that hour.
Estimate your monthly bill for the same workload on each model.
Monthly = daily × 30. Discounted rates applied where a promotion is active.
Kimi K3.1 Pro: $10.5/M output tokens; Claude Fable 5.1: $55/M. Use the cost calculator above to estimate your own workload.
Kimi K3.1 Pro: 10.1s time to first token measured on AIHubMix; see the live performance charts above for how each model behaves across the day.
Claude Fable 5.1 at 65.2 tok/s and Kimi K3.1 Pro at 39.3 tok/s, measured as output throughput on AIHubMix — a separate metric from time to first token.
Kimi K3.1 Pro accepts text and image input; Claude Fable 5.1 accepts text, image and PDF input and supports thinking, tool calling, function calling and structured outputs.
Yes. AIHubMix serves every model on this page behind one OpenAI-compatible endpoint, so switching between them is a one-line change to the model field — no second account, key or SDK.
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