Compare Kimi K3 from moonshotai and Claude Fable 5 from Anthropic on key metrics including benchmarks, price, context length, and other model features. Access both models and hundreds of others through the OpenRouter API.


Kimi K3 and Claude Fable 5 are available through the OpenRouter API, so switching between them takes a model slug change rather than a new integration.
Kimi K3, from moonshotai, has a 1,048,576-token context window and is priced at $0.75/M tokens input, $14.90/M tokens output on OpenRouter.
Claude Fable 5, from Anthropic, has a 1,000,000-token context window and is priced at $10/M tokens input, $50/M tokens output on OpenRouter.
| Attribute | Kimi K3 | Claude Fable 5 |
|---|---|---|
| Input price | $0.75/M tokens | $10/M tokens |
| Output price | $14.90/M tokens | $50/M tokens |
| Context window | 1,048,576 tokens | 1,000,000 tokens |
| Intelligence Index | 43.6 | 49.6 |
| Coding Index | 76.2 | 76.5 |
| Agentic Index | 50.0 | 50.7 |
| Latency (p50) | 1.47 s | Not available |
| Throughput (p50) | 20.0 tok/s | Not available |
Benchmark data updated
Kimi K3 is cheaper than Claude Fable 5 on OpenRouter: Kimi K3 costs $0.75/M tokens input and $14.90/M tokens output, while Claude Fable 5 costs $10/M tokens input and $50/M tokens output.
Kimi K3 has the longer context window at 1,048,576 tokens, compared with 1,000,000 tokens for Claude Fable 5.
Claude Fable 5 scores higher on coding, with an Artificial Analysis Coding Index of 76.5 compared with 76.2 for Kimi K3.