API Changelog

Agent API low, medium, and high presets now use Fast Search (search_type: "fast") for web_search, dropping cost from $2.50 to $1.00 per 1,000 invocations and about 800 ms faster. xhigh is unchanged.

The Agent API now accepts PDF, DOC, DOCX, TXT, and RTF documents as input_file content via inline file_data or public HTTPS file_url. Conversations can continue with previous_response_id without re-uploading inline documents.

Agent API responses now include token usage and cost for successful pplx_sdk.llm.extract calls inside the sandbox tool, reported in usage.tool_calls_details.sandbox and included in usage.cost.total_cost. Uses openai/gpt-6-luna pricing. Does not backfill historical…

New image_search Agent API tool returns typed image_search_results with image and source-page URLs, with result limits and domain, format, and safe-search filters. Costs $2.50 per 1,000 successful invocations.

pplx-decider-v1.1-27b replaces pplx-decider-v1-27b as the Decisions API model. Input now costs $0.02 per million tokens, down from $0.04. Old model name continues to work at the same rate.

The Agent API now supports anthropic/claude-haiku-5-5. Requests with more than 100k input tokens use higher rates.

Agent API now supports google/gemini-3.8-flash with promotional pricing through December 31, 2026.

Agent API now supports openai/gpt-6-sol, openai/gpt-6-luna, anthropic/claude-opus-5-5, and xai/grok-4.7.

The Agent API now supports anthropic/claude-sonnet-5-5.

Agent API low and medium presets moved to openai/gpt-6-luna; high moved to openai/gpt-6-sol.

Agent API and Orchestrator API now support perplexity/glm-5.3-flash.

On October 24, 2026, the Agent API and Orchestrator API will retire openai/gpt-5.4, gpt-5.4-mini, gpt-5.4-nano, gpt-5.2, gpt-5.1, gpt-5, and gpt-5-mini. Update model selections and fallback chains before the cutoff.

Agent API fast preset now uses Fast Search (search_type: "fast"), dropping web_search cost from $2.50 to $1.00 per 1,000 invocations.

Set search_type: "fast" on the Search API or Agent API web_search tool for lower-latency search at $1.00 per 1,000 requests or invocations. Set search_type: "web" for standard search.

The Agent API now supports openai/gpt-6.1-sol.

The Agent API xhigh preset now uses anthropic/claude-opus-5-5 (previously openai/gpt-5.6-sol).

The remote Perplexity MCP Server at https://api.perplexity.ai/mcp now supports OAuth sign-in with a Perplexity account for MCP clients like claude.ai, Claude Code, Cursor, and VS Code. API keys continue to work.

Register a remote MCP server on the Project connectors page; Perplexity stores its credential. Use the generated connector ID with type: "connector" in Agent API requests. Supports API-key or no auth, with Streamable HTTP or SSE transport.

Agent API and Router API now support perplexity/glm-5.3, xai/grok-4.6, and perplexity/nemotron-3-ultra-550b-a55b. Agent API presets use stable prompt cache keys to reuse shared prompt prefixes and cut costs by about 5%, while Gemini 3.7 Flash pricing rose on August 27, 2026 to $0.75 per million input tokens, $0.075 per million cached-input tokens, and $3.75 per million output/reasoning tokens.

Agent API now supports the GPT-5.6 family (sol, terra, luna) and Grok 4.5, all with first-party token pricing.