Sonar Pro

Sonar Pro is designed as the “workhorse” of Perplexity’s Sonar lineup. It inherits the R1-derived reasoning backbone, giving it the ability to follow complex instructions, explain reasoning steps, and generate structured outputs when needed. Compared to Sonar Large 32K, Pro is smaller and faster, which makes it more cost-efficient for continuous use while still capable of handling challenging reasoning tasks across research, coding, and multilingual content analysis.

Its context window is sized to cover typical enterprise and knowledge workflows, so it can process long articles, technical documentation, or multiple retrieved passages without truncation. Sonar Pro integrates tightly with Perplexity’s retrieval-augmented generation setup, ensuring responses are grounded in cited evidence rather than free-form hallucination. It also supports JSON and function-calling formats, making it easy to slot into pipelines and agent frameworks.

In practice, teams reach for Sonar Pro when they want a dependable balance of quality, speed, and cost for copilots, research assistants, analytics explainers, or repo-level code helpers, reserving Sonar Large for the heaviest reasoning tasks.