AI Radar

Sonar (February 2025)

Deprecated · Language

The February 2025 version of Sonar is Perplexity's in-house model built on Llama 3.3 70B, released under the unchanged name Sonar for Perplexity Pro users in the app and also usable through the Sonar API. Perplexity says it was further trained for answer factuality and readability in its default search mode; in the app it runs on Cerebras inference infrastructure. [1] Primary source

Timeline of Sonar (February 2025) →

Claims and evidence

  • Released Available from that day to all Perplexity Pro users in the app; the post says it can also be used through the Sonar API. Primary source[1]first paragraph
  • Deprecated Applies to the Sonar API offering; changelog entry tagged Deprecation, labelled July 2026 (month only). Primary source[2]July 2026: Sonar Chat Completions migration
  • Status DeprecatedSet as for the API id sonar: Sonar Chat Completions support ended on 2026-09-27 and requests are being reformulated as Agent API requests; the Agent API still lists perplexity/sonar without naming a version. Whether this version is still a selectable model in the Perplexity app is not stated in the sources found. Primary source[3]introduction [2]July 2026: Sonar Chat Completions migration [4]Perplexity
  • Revision of SonarPerplexity presents it as the latest version of Sonar, usable through the Sonar API. Primary source[1]first paragraph; Use Sonar Today
  • Derived from (fine tune) Llama 3.3 (Meta)Built on Llama 3.3 70B Instruct. Primary source[1]
  • Change · Training data Built on Llama 3.3 70B and further trained for answer factuality and readability in Perplexity's default search mode.Compared with Sonar Primary source[1]
  • Change · Availability Offered to Perplexity Pro users in the app, who could set it as their default model, in addition to the Sonar API.Compared with Sonar Primary source[1]Use Sonar Today
  • Change · Efficiency Runs on Cerebras inference infrastructure in the Perplexity app; the API version did not yet run on Cerebras at launch.Compared with Sonar Primary source[1]
  • Feature RetrievalOptimised to answer with facts grounded in search results in Perplexity's default search mode. Primary source[1]Sonar Excels at Providing Factual and High Quality Answers
  • Parameters Not disclosedNot stated for Sonar itself; Perplexity says it is built on top of Llama 3.3 70B (base model Llama 3.3 70B Instruct). No claim madeNo source
  • Access consumer app, API Primary source[1]first paragraph; Use Sonar Today

Lineage

Predecessors

No known predecessor.

Successors

No known successor.

Based on

  • Sonar · 21 January 2025 · revision
  • Llama 3.3 · Meta · 6 December 2024 · derived (fine tune)

Variants and derived

None recorded.

Siblings

None recorded.

All ancestors

All descendants

None.

Variants

No variants recorded in this record.

Related AI Radar coverage

AI Radar coverage starts in June 2026; no coverage linked yet.

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