Sonar Reasoning Pro vs Inkling Small: side-by-side summary

Sonar Reasoning Pro and Inkling Small 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.

Inkling Small, from thinkingmachines, has a 1,048,576-token context window and is priced at $0.45/M tokens input, $1.20/M tokens output on OpenRouter.

Context window

• Sonar Reasoning Pro: 128,000 tokens
• Inkling Small: 1,048,576 tokens

Price

• Sonar Reasoning Pro: $2/M tokens input, $8/M tokens output
• Inkling Small: $0.45/M tokens input, $1.20/M tokens output

Provided by

• Sonar Reasoning Pro: Perplexity
• Inkling Small: thinkingmachines

• Sonar Reasoning Pro model details, providers and pricing
• Inkling Small model details, providers and pricing