Releasesby GlyphMarch 2026
Click the bolded titles for a breakdown of what's new, or go to the notes tab for full details. Sources in Conversation Review : Each turn now shows which Connected Knowledge files the agent retrieved. Click a source name to preview the document content inline, without leaving Conversation Review.
Also shipped Mar 26, 2026PolyAI in March 2026 →
Mutual Exclusivity
What it is: Grouping guides and surveys into a mutual exclusivity set ensures each end-user sees at most one from the group. The primary use case is platform-specific announcements: create a version for iOS and another for Android, add both to the group, and users see only the version that matches their device.
Temperature Parameter: Increased Maximum The maximum allowed value for the temperature parameter for Chat...
Temperature Parameter: Increased Maximum The maximum allowed value for the temperature parameter for Chat Completions has been increased from 1.5 to 2.0. This aligns with the range supported by OpenAI, Fireworks, and other major LLM providers. Higher temperature values produce more random and creative outputs.
developer Message Role (gpt-oss-120b) The Chat Completions API now supports the developer message role for...
developer Message Role (gpt-oss-120b) The Chat Completions API now supports the developer message role for gpt-oss-120b, aligning with the OpenAI API message format. The developer role is functionally equivalent to system , the system role remains supported for backwards compatibility. Other models do not support the developer role.
TTS speak speed (Early Access)
You can now control the speaking rate of Deepgram TTS in the Voice Agent API using the agent.speak.provider.speed parameter. This parameter accepts a float value between 0.7 and 1.5 , with 1.0 as the default.
Updated LLM models
New OpenAI models , Two new models are now available in the Standard pricing tier: gpt-5.4-nano gpt-5.4-mini Gemini 2.0 Flash deprecated , The gemini-2.0-flash model is now deprecated. We recommend migrating to gemini-2.5-flash or a newer Gemini model. See the Google models table for alternatives.
Access - Code Mode for MCP server portals
MCP server portals support Code Mode MCP server patterns , a technique that reduces context window usage by replacing individual tool definitions with a single code execution tool. Code Mode is turned on by default on all portals. To turn it off, edit the portal in Access controls > AI controls and turn off Code Mode under Basic information .
More from PolyAIEvery PolyAI release →
August 2025
Click the bolded titles for a breakdown of what's new, or go to the notes tab for full details. Home page improvements : Faster load times and a cleaner layout on the Agent Studio homepage dashboard. AI call summaries : GPT-based summaries now surface at the top of Conversation Review and as tooltips in Conversations.
February 2026
Click the bolded titles for a breakdown of what's new, or go to the notes tab for full details. Channels and navigation reorganization : Agent Studio now includes a dedicated Channels section for Voice, Chat, and Widget configuration, alongside broader navigation updates across Build, Configure, and Deployments.
May 2026
Click the bolded titles for a breakdown of what's new, or go to the notes tab for full details. Conversations workspace revamp : Voice and Web chat are now separate scopes with their own saved views, column layouts, and an integrated review side panel that opens without leaving the table.
June 2026
Click the bolded titles for a breakdown of what's new, or go to the notes tab for full details. Platform Guardrails : Five pre-built safety protections – jailbreak defence, scope and hallucination control, AI identity, emergency escalation, and tool call integrity – are now applied automatically to every conversation, observable in transcripts, and...
New Agent Studio layout
New Agent Studio layout. On 24 June we're rolling out a cleaner Studio sidebar that consolidates 25+ pages into 15 grouped sections. No functionality changes , agents behave exactly as before. See Meet the new Agent Studio for the full migration guide, including a section-by-section "was → now" map and a list of features that have moved.
April 2026
Click the bolded titles for a breakdown of what's new, or go to the notes tab for full details. Multi-language support : Configure a single agent to handle multiple languages from the UI – add languages, assign per-language voices with automatic switching, use conditional content tags, and test in any language from Agent Chat.
December 2025
Click the bolded titles for a breakdown of what's new, or go to the notes tab for full details. No-code flows : For projects that have opted in, flows can be built using drag-and-drop nodes, conditions, and entity collection – reducing reliance on custom functions for common logic.
July 2026
Click the bolded titles for a breakdown of what's new, or go to the notes tab for full details. PolyAI ADK : A local, Git-like workflow for Agent Studio projects , pull, edit with standard tooling, validate, and push. Install with pip install polyai-adk and see the ADK docs .