From the source
From the source
Perplexity released MCP Server v1.0.0, moving its model-backed tools from legacy Sonar models to Agent API presets (fast, medium, high).
The update brings faster and cheaper performance, streaming progress for long-running research, and cancellation support.
The strip_thinking and reasoning_effort parameters were removed.
From the source
The Perplexity MCP Server v1.0.0 moves its model-backed tools from the legacy Sonar models to Agent API presets: perplexity_ask uses the fast preset, perplexity_reason uses medium, and perplexity_research uses high. Tool names and response shapes are unchanged, and all three tools are faster and cheaper on average than their Sonar predecessors. Long-running research now streams progress to MCP clients that request it, and cancelling an MCP request cancels the underlying run.
docs.perplexity.ai