# Sonar Deep Research (slim) > Sonar Deep Research, a family of models by Perplexity, listed from OpenRouter. Indexed, not reviewed: facts and our own checks, no score or ranking. Sonar Deep Research is a research-focused model designed for multi-step retrieval, synthesis, and reasoning across complex topics.… - Full: https://www.anchorterminal.com/tools/sonar-deep-research.md (~500 tokens) · this version ~430 tokens · JSON https://www.anchorterminal.com/tools/sonar-deep-research.json · canonical https://www.anchorterminal.com/tools/sonar-deep-research - Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · Updated: 2026-10-05 # Sonar Deep Research > Indexed, not reviewed: facts from OpenRouter and our own checks. No score, grade or rank, and not in the rankings until the panel reviews it. How the index works: https://www.anchorterminal.com/indexed/ - Kind: model family, by Perplexity - Category: Model APIs & inference (https://www.anchorterminal.com/categories/inference.md) - Listed because: OpenRouter lists it, with prices from the providers that serve it. - What OpenRouter says: 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... ## Models (1) | Model | OpenRouter id | Released | Context | Input $/1M | Output $/1M | Supports | | --- | --- | --- | --- | --- | --- | --- | | Sonar Deep Research | `perplexity/sonar-deep-research` | 2025-03 | 128k | $2 | $8 | reasoning | Prices and limits as OpenRouter lists them; a provider's own price can differ. - JSON: https://www.anchorterminal.com/api/v1/tools/sonar-deep-research.json - Being indexed says nothing about quality, and nobody can pay for it. Ask for a review: https://www.anchorterminal.com/builders/#claiming