Sonar Reasoning Pro
Sonar Reasoning Pro adds Chain-of-Thought reasoning on top of Perplexity's real-time web search, making it ideal for complex multi-step research questions.
Perplexity
Sonar Reasoning Pro
Web-grounded reasoning with explicit Chain-of-Thought
Sonar Reasoning Pro adds Chain-of-Thought reasoning on top of Perplexity's real-time web search, making it ideal for complex multi-step research questions.
Key features
Sonar Reasoning Pro · AI Models
Context window
128K tokens
Released
2026
Pricing
$2 input / $8 output per 1M tokens
Key features
- Advanced Chain-of-Thought reasoning over fresh web sources.
- 128K-token context window.
- Replaces deprecated sonar-reasoning model.
- $2 input / $8 output per 1M tokens.
Best for
Pick Sonar Reasoning Pro for multi-step research that needs both fresh web data and explicit reasoning — investment theses, competitive analyses, deep technical questions.
Frequently Asked Questions
How does Chain-of-Thought work with web search in Sonar Reasoning Pro?
Sonar Reasoning Pro first retrieves fresh web sources, then applies Chain-of-Thought reasoning over those sources — ensuring conclusions are grounded in current facts, not just training data.
Is Sonar Reasoning Pro good for investment research?
Yes — the combination of real-time web access and step-by-step reasoning makes it particularly valuable for investment theses, competitive analyses and any domain where both currency and logical rigour matter.
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Sonar Reasoning Pro adds Chain-of-Thought reasoning on top of Perplexity's real-time web search, making it ideal for complex multi-step research questions.