v6.6

Release Notes

This update introduces support for the GPT-5, o3 and o4 families of models in Next-Gen Assistants. This update also enables Web Search and full Reasoning capabilities and provides important bug fixes and improvements.

Some features may not be available for all Groups or on all devices and browsers.

Assistants

New Features

• Introduces support for the GPT-5 family of models, including GPT-5, GPT-5 mini and GPT-5 nano.
• Adds verbosity parameter support for the GPT-5 family of models.
• Introduces support for the following models:
  • o3: Reasoning model for complex tasks.
  • o3-pro: Version of o3 with more compute for better responses.
  • o4-mini: Fast, cost-efficient reasoning model.
• Introduces new Web Search option in the Tools section for Web Search-capable models. These include:
  • gpt-4o-mini
  • gpt-4o
  • gpt-4.1-mini
  • gpt-4.1
  • o4-mini
  • o3
  • gpt-5 with reasoning levels low, medium and high
  • gpt-5-mini with reasoning levels low, medium and high

Updates & Improvements

• Adds minimal reasoning effort support for the GPT-5 family of models. Tool calls, including File Search and Code Interpreter are not available in the minimal reasoning effort due to model limitations.
• File Search and Code Interpreter tools can now be used with all compatible reasoning models in Next-Gen Assistants.

Resolved Issues

• Fixed: Vector Stores associated with Next-Gen assistants may not be deleted from OpenAI's servers when File Search is disabled on PingPong.

Deprecations

• The following models are no longer available for new Assistants:
  • o3-mini
  • o1
  • o3-mini-2025-01-31
  • o1-2024-12-17

Notes

• The GPT-5 family of models will only be available in Next-Gen Assistants.
• o3, o3-pro, and o4-mini will only be available in Next-Gen Assistants.
• Classic Assistants do not support Web Search capabilities. To use Web Search, create a Next-Gen Assistant.
• minimal reasoning effort does not support Web Search capabilities. To use Web Search, select a higher reasoning effort level.

Threads

New Features

• Introduces support for the full reasoning feature set of reasoning models.
• Adds support for preserving Reasoning summaries.
• Adds support for saving encrypted Reasoning tokens to be passed as input in future conversation rounds. Together with Reasoning summaries, the Assistant can now refer to its previous train of thought when crafting its next response.

Known Issues

• There is no UI indicator when the Assistant uses File Search, Web Search, or Reasoning. As the Assistant takes multiple turns reasoning and making Tool calls, the Thread UI will show no progress besides a spinner. Depending on the reasoning configuration and model selection, Time to First Token (TTFT) may be upwards of 30 seconds.
• Since o3-pro is designed to tackle tough problems, some requests may take several minutes to finish. PingPong does not currently support background mode to avoid timeouts.
• Only Web Search result annotations within the assistant's response are displayed in the Thread UI. Users can't view which search queries the Assistant made, or the entire list of search results the Assistant considered to craft its response.
• Reasoning summaries are not streamed or displayed in the Thread UI.

Resolved Issues

• Fixed: Previous Assistant messages passed as input in future conversation rounds do not contain the Message ID assigned by OpenAI, which may cause the API to disregard the assistant role of certain Assistant responses.
• Fixed: Users may be unable to send messages to non-reasoning models in certain situations because of an input parameter misconfiguration.

Deployment Information

Schema Upgrade	Migration Script	Permissions Update	Task Definition Update	Configuration Update
YES	No	No	No	No

Deployment Details

• Schema Upgrade: New reasoning_steps, reasoning_content_parts, reasoning_summary_parts, web_search_call_actions, web_search_call_search_sources tables, adds verbosity parameter in Assistants and Threads table.

Related PRs

What's Changed

• feat(next-gen)/ Add support for GPT-5 family by @ekassos in #1000
• feat(next-gen)/ Support for Web Search and Reasoning by @ekassos in #1001
• feat(next-gen)/ o3, o3-pro, o4-mini support by @ekassos in #1002

Full Changelog: 777-srv362-web221...780-srv365-web223