Kimi K3 vs Sonar Reasoning Pro: side-by-side summary

Kimi K3 and Sonar Reasoning Pro 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 $2.60/M tokens input, $13/M tokens output 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

• Kimi K3: 1,048,576 tokens
• Sonar Reasoning Pro: 128,000 tokens

Price

• Kimi K3: $2.60/M tokens input, $13/M tokens output
• Sonar Reasoning Pro: $2/M tokens input, $8/M tokens output

Provided by

• Kimi K3: moonshotai
• Sonar Reasoning Pro: Perplexity

• Kimi K3 model details, providers and pricing
• Sonar Reasoning Pro model details, providers and pricing