Compare Kimi K3 from moonshotai, GPT-5.6 Sol from OpenAI, and Claude Fable 5 from Anthropic on key metrics including benchmarks, price, context length, and other model features. Access all 3 models and hundreds of others through the OpenRouter API.


Kimi K3, GPT-5.6 Sol, 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 $0.19/M tokens input, $8.94/M tokens output on OpenRouter.
GPT-5.6 Sol, from OpenAI, has a 1,050,000-token context window and is priced at $4/M tokens input, $20/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 | GPT-5.6 Sol | Claude Fable 5 |
|---|---|---|---|
| Context window | 1,048,576 tokens | 1,050,000 tokens | 1,000,000 tokens |
| Price | $0.19/M tokens input, $8.94/M tokens output | $4/M tokens input, $20/M tokens output | $10/M tokens input, $50/M tokens output |
| Provided by | moonshotai | OpenAI | Anthropic |
| Model page | Kimi K3 model details, providers and pricing | GPT-5.6 Sol model details, providers and pricing | Claude Fable 5 model details, providers and pricing |