Sonar Deep Research

Perplexity · Released March 2025

Sonar Deep Research is a research-focused model designed for multi-step retrieval, synthesis, and reasoning across complex topics. It autonomously searches, reads, and evaluates sources, refining its approach as it gathers...

It is part of Perplexity's Sonar line, built specifically for search-grounded, citation-backed answers.

Facts and pricing

Provider

Perplexity

Context window

128K tokens

Input price

22.0 credits / 1M tokens ($2.00 raw)

Output price

88.0 credits / 1M tokens ($8.00 raw)

Vision (image input)

No

Tool calling

No

Extended reasoning

No

Credits are what Zeplik bills: 1 credit = $0.10, computed from the raw provider rate with a 1.10x margin. Raw prices shown per 1M tokens.

What Sonar Deep Research is best for

• Hard problems where answer quality matters more than cost: strategy, analysis, difficult writing

Example prompts

Prompts that suit a frontier model like Sonar Deep Research:

• Review this business plan and give me the three hardest questions an investor would ask
• Rewrite this announcement so it lands with both engineers and executives
• I am choosing between two job offers, help me think through the tradeoffs
• Draft a technical design doc for a rate limiter, including failure modes

Perplexity family

Frequently asked questions

What is Sonar Deep Research?

Sonar Deep Research is an AI model by Perplexity. Sonar Deep Research is a research-focused model designed for multi-step retrieval, synthesis, and reasoning across complex topics. It autonomously searches, reads, and evaluates sources, refining its approach as it gathers...

How much does Sonar Deep Research cost on Zeplik?

Input tokens cost 22.0 credits per million and output tokens 88.0 credits per million (1 credit = $0.10; the raw provider rates are $2.00 and $8.00 per million). New accounts start with free credits.

How long can a conversation with Sonar Deep Research be?

Sonar Deep Research has a 128K-token context window (128,000 tokens), which covers the conversation plus any documents you attach.

Does Sonar Deep Research support images and tools?

Sonar Deep Research is text-only and does not support tool calling.

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