Sonar Pro Search vs Phi 4: side-by-side summary

Sonar Pro Search and Phi 4 are available through the OpenRouter API, so switching between them takes a model slug change rather than a new integration.

Sonar Pro Search, from Perplexity, has a 200,000-token context window and is priced at $3/M tokens input, $15/M tokens output on OpenRouter.

Phi 4, from Microsoft, has a 16,384-token context window and is priced at $0.07/M tokens input, $0.14/M tokens output on OpenRouter.

Context window

• Sonar Pro Search: 200,000 tokens
• Phi 4: 16,384 tokens

Price

• Sonar Pro Search: $3/M tokens input, $15/M tokens output
• Phi 4: $0.07/M tokens input, $0.14/M tokens output

Provided by

• Sonar Pro Search: Perplexity
• Phi 4: Microsoft

• Sonar Pro Search model details, providers and pricing
• Phi 4 model details, providers and pricing