Sonar Reasoning Pro vs Laguna S 2.1: side-by-side summary

Sonar Reasoning Pro and Laguna S 2.1 are available through the OpenRouter API, so switching between them takes a model slug change rather than a new integration.

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.

Laguna S 2.1, from poolside, has a 1,048,576-token context window and is priced at $0.09/M tokens input, $0.18/M tokens output on OpenRouter.

Context window

• Sonar Reasoning Pro: 128,000 tokens
• Laguna S 2.1: 1,048,576 tokens

Price

• Sonar Reasoning Pro: $2/M tokens input, $8/M tokens output
• Laguna S 2.1: $0.09/M tokens input, $0.18/M tokens output

Provided by

• Sonar Reasoning Pro: Perplexity
• Laguna S 2.1: poolside

• Sonar Reasoning Pro model details, providers and pricing
• Laguna S 2.1 model details, providers and pricing