LFM2.5-2.6B vs Sonar Reasoning Pro: side-by-side summary

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

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

Sonar Reasoning Pro, from Perplexity, has a 128,000-token context window and is priced at $2/M tokens input, $8/M tokens output on OpenRouter.

Context window

• LFM2.5-2.6B: 131,072 tokens
• Sonar Reasoning Pro: 128,000 tokens

Price

• LFM2.5-2.6B: Pricing varies by provider
• Sonar Reasoning Pro: $2/M tokens input, $8/M tokens output

Provided by

• LFM2.5-2.6B: Liquid
• Sonar Reasoning Pro: Perplexity

• LFM2.5-2.6B model details, providers and pricing
• Sonar Reasoning Pro model details, providers and pricing