Claude Fable 5.1 vs LFM2.5-2.6B: side-by-side summary

Claude Fable 5.1 and LFM2.5-2.6B are available through the OpenRouter API, so switching between them takes a model slug change rather than a new integration.

Claude Fable 5.1, from Anthropic, has a 1,000,000-token context window and is priced at $10/M tokens input, $50/M tokens output on OpenRouter.

LFM2.5-2.6B, from Liquid, has a 131,072-token context window and is priced by the provider serving it on OpenRouter.

Context window

• Claude Fable 5.1: 1,000,000 tokens
• LFM2.5-2.6B: 131,072 tokens

Price

• Claude Fable 5.1: $10/M tokens input, $50/M tokens output
• LFM2.5-2.6B: Pricing varies by provider

Provided by

• Claude Fable 5.1: Anthropic
• LFM2.5-2.6B: Liquid

• Claude Fable 5.1 model details, providers and pricing
• LFM2.5-2.6B model details, providers and pricing