Sonar

Claims and evidence

• Released 21 January 2025The post of 2025-01-21 presents the Sonar and Sonar Pro APIs together and says the latter is generally available from that day; the changelog (January 2025, month only) introduces both. The API model list captured on 2025-01-21 at 10:48 UTC still showed only the llama-3.1-sonar models; the capture of 2025-01-22 lists sonar. ● Primary source[1]second paragraph [4]Supported Models table [2]January 2025: Build with Perplexity's new APIs
• Deprecated July 2026Changelog entry tagged Deprecation, labelled July 2026 (month only). The migration guide gives 2026-09-27 as the end of Sonar Chat Completions support. ● Primary source[2]July 2026: Sonar Chat Completions migration

• Status DeprecatedSonar Chat Completions support ended on 2026-09-27; synchronous and streaming requests keep working but are being reformulated as Agent API requests, and the migration guide maps sonar to the fast preset. The Agent API still lists perplexity/sonar as Perplexity's grounded search model, without saying which Sonar version it serves. ● Primary source[3]introduction; How Sonar Chat Completions maps to Agent API presets [2]July 2026: Sonar Chat Completions migration [5]Perplexity

• Successor of Llama 3.1 SonarThe January 2025 notice removes the llama-3.1-sonar online models on 2025-02-22 and recommends the recently released Sonar or Sonar Pro. ● Primary source[2]January 2025: API model deprecation notice

• Change · Other Comes with citations included and source customisation; Perplexity also opened JSON mode and search domain filters to more usage tiers.Compared with Llama 3.1 Sonar ● Primary source[1]

• Feature RetrievalAnswers grounded in real-time web search, with citations. ● Primary source[6]Key Features [1]second and third paragraphs
• Context window 127k tokensListed as 127k at launch; the model list from 2025-02-22 and the model page give 128k. ● Primary source[4]Supported Models table
• Parameters Not disclosedNot disclosed by Perplexity; the January 2025 sources name no base model. No claim madeNo source
• Access API ● Primary source[1] [2]January 2025: Build with Perplexity's new APIs

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