Question 1

What is Sonar Pro Search?

Accepted Answer

Sonar Pro Search is a model from Perplexity, released on Oct 30, 2025. Exclusively available on the OpenRouter API, Sonar Pro's new Pro Search mode is Perplexity's most advanced agentic search system. It is designed for deeper reasoning and analysis. Pricing is based on tokens plus $18 per thousand requests. This model powers the Pro Search mode on the Perplexity platform. Sonar Pro Search adds autonomous, multi-step reasoning to Sonar Pro. So, instead of just one query + synthesis, it plans and executes entire research workflows using tools.

Question 2

How much does Sonar Pro Search cost?

Accepted Answer

On the Respan gateway, input starts at $3.00 per 1M tokens on OpenRouter, and output starts at $15.00 per 1M tokens on OpenRouter, after gateway discounts.

Question 3

Which providers serve Sonar Pro Search on Respan?

Accepted Answer

Sonar Pro Search is served by OpenRouter.

Question 4

What is Sonar Pro Search's context window?

Accepted Answer

Sonar Pro Search accepts up to 200K tokens of context.

Question 5

How do I use Sonar Pro Search with the Respan gateway?

Accepted Answer

Point any OpenAI-compatible SDK at https://api.respan.ai/api/ with your Respan API key and set the model to "sonar-pro-search". To set it up with a coding agent, copy the agent setup prompt at the top of this page.

Question 6

How fast is Sonar Pro Search?

Accepted Answer

Over the last 30 days of requests through the Respan gateway, the fastest provider was OpenRouter at 29 tokens per second, and the lowest response latency was 1.0 seconds on OpenRouter. Speed varies with request size and provider.

Sonar Pro Search

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Cost by volume

Throughput and latency

Output speed

Response latency

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