--- title: "Perplexity API API changes, deprecations and deadlines | Harbyn" description: "Perplexity API: 0 upcoming deadlines and 31 recorded changes as of 2026-10-25, each with its source." canonical: "https://harbyn.com/vendors/perplexity" last-updated: 2026-10-25 --- # Perplexity API: API changes and deadlines Markdown version of . AI models and APIs. 0 upcoming deadlines, 31 recorded changes. Every entry cites the Perplexity API page we read it from. ## What we read The Perplexity API pages and feeds our ingestion visits, politely and on a schedule. - **Changelog**: - **Changelog**: ## What the scanner looks for How `harbyn scan` recognises Perplexity API in a repository, on your machine. Nothing leaves it. - **Packages**: `npm @perplexity-ai/perplexity_ai`, `pypi perplexityai` - **API hosts**: `api.perplexity.ai` - **Model IDs starting with**: `sonar` ## Upcoming deadlines No upcoming Perplexity API deadline in the feed right now. ## Change history Newest first, by the date Perplexity API announced it. This is the archive: past changes are not warnings, and changes we recorded after they took effect are marked as such. ### October 2026 - Oct 22, 2026, Deprecation: [Agent API renames preset to effort](https://harbyn.com/changes/perplexity/2026-10-22-agent-api-preset-renamed-to-effort-this-is-a-naming-change-only.md) - Oct 19, 2026, Notice: [Correction includes xhigh in Fast Search defaults](https://docs.perplexity.ai/docs/resources/changelog/rss.xml) - Oct 19, 2026, Feature: [Tool approvals for MCP and connector calls](https://docs.perplexity.ai/docs/resources/changelog/rss.xml) - Oct 19, 2026, Rate limit: [xhigh preset output budget raised to 512,000 tokens](https://docs.perplexity.ai/docs/resources/changelog/rss.xml) - Oct 17, 2026, Feature: [DeepSeek V4 Pro added to the model docs](https://docs.perplexity.ai/docs/resources/changelog/rss.xml) - Oct 17, 2026, Feature: [GPT-6 Astra added to the Agent API model docs](https://docs.perplexity.ai/docs/resources/changelog/rss.xml) - Oct 16, 2026, Behavior change: [Decisions API requests for pplx-decider-v1.1-27b now use pplx-decider-v1.2](https://harbyn.com/changes/perplexity/2026-10-16-decisions-api-pplx-decider-v1-2-and-pplx-decider-flash-v1-2-pplx-decider-v1-2-re.md) - Oct 15, 2026, Feature: [Gemini 4 Argon available in the Agent API](https://docs.perplexity.ai/docs/resources/changelog/rss.xml) - Oct 15, 2026, Feature: [NVIDIA Nemotron 3.5 Super added to the Agent API](https://docs.perplexity.ai/docs/resources/changelog/rss.xml) - Oct 9, 2026, Feature: [Decisions API model is now pplx-decider-v1.1-27b, replacing pplx-decider-v1-27b](https://docs.perplexity.ai/docs/resources/changelog/rss.xml) - Oct 7, 2026, Feature: [Claude Haiku 5.5 support in the Agent API](https://docs.perplexity.ai/docs/resources/changelog/rss.xml) - Oct 5, 2026, Behavior change: [Agent API responses now report sandbox extraction usage and cost](https://harbyn.com/changes/perplexity/2026-10-05-accurate-sandbox-extraction-usage-and-costs-agent-api-responses-now-include-mode.md) - Oct 5, 2026, Feature: [Image Search tool](https://docs.perplexity.ai/docs/resources/changelog/rss.xml) - Oct 5, 2026, Behavior change: [Agent API presets switch to Fast Search](https://harbyn.com/changes/perplexity/2026-10-05-low-medium-and-high-presets-use-fast-search-the-agent-api-low-medium-and-high-pr.md) (retracted) - Oct 5, 2026, Feature: [Native document input for the Agent API](https://docs.perplexity.ai/docs/resources/changelog/rss.xml) - Oct 5, 2026, Feature: [Decisions API launched](https://docs.perplexity.ai/docs/resources/changelog/rss.xml) ### September 2026 - Sep 29, 2026, Feature: [Claude Sonnet 5.5 support in the Agent API](https://docs.perplexity.ai/docs/resources/changelog/rss.xml) - Sep 29, 2026, Feature: [GPT-6.1 Sol support in the Agent API](https://docs.perplexity.ai/docs/resources/changelog/rss.xml) - Sep 28, 2026, Notice: [September 2026](https://docs.perplexity.ai/docs/resources/changelog/rss.xml) - Sep 25, 2026, Behavior change: [Fast preset now uses Fast Search](https://harbyn.com/changes/perplexity/2026-09-25-fast-preset-uses-fast-search-the-agent-api-fast-preset-now-uses-fast-search-sear.md) - Sep 25, 2026, Behavior change: [Low, medium, and high presets now use GPT-6 models](https://harbyn.com/changes/perplexity/2026-09-25-low-medium-and-high-presets-use-gpt-6-the-agent-api-low-medium-and-high-presets.md) - Sep 25, 2026, Retirement: [older OpenAI models retired from the Agent and Router APIs on October 24, 2026](https://harbyn.com/changes/perplexity/2026-09-25-older-openai-models-retired-october-24-2026.md) (effective Oct 24, 2026) - Sep 24, 2026, Feature: [Fast Search](https://docs.perplexity.ai/docs/resources/changelog/rss.xml) - Sep 22, 2026, Feature: [Claude Opus 5.5 support in the Agent API](https://docs.perplexity.ai/docs/resources/changelog/rss.xml) - Sep 22, 2026, Feature: [GPT-6 Luna support in the Agent API](https://docs.perplexity.ai/docs/resources/changelog/rss.xml) - Sep 22, 2026, Feature: [GPT-6 Sol support in the Agent API](https://docs.perplexity.ai/docs/resources/changelog/rss.xml) - Sep 22, 2026, Feature: [Grok 4.7 support in the Agent API](https://docs.perplexity.ai/docs/resources/changelog/rss.xml) - Sep 13, 2026, Feature: [Custom connectors for remote MCP servers](https://docs.perplexity.ai/docs/resources/changelog/rss.xml) - Sep 9, 2026, Feature: [Gemini 3.8 Flash support in the Agent API](https://docs.perplexity.ai/docs/resources/changelog/rss.xml) - Sep 4, 2026, Feature: [OAuth support for the remote Perplexity MCP Server](https://docs.perplexity.ai/docs/resources/changelog/rss.xml) - Sep 2, 2026, Feature: [GLM 5.3 Flash support](https://docs.perplexity.ai/docs/resources/changelog/rss.xml)