About this tag
The assistants api tag covers the planned retirement of OpenAI’s Assistants API and the migration decisions affecting applications that depend on it. Recent discussions focus on the August 2026 retirement timeline, including the reported August 26, 2026 date, and the move toward OpenAI’s Responses API, which supports model output, tool calls, web search, file search, computer use, and other capabilities. The tag also covers Azure and Microsoft Foundry considerations, particularly workloads tied to Foundry Agent Service (classic). These discussions distinguish the Assistants API retirement from the later March 31, 2027 retirement of Foundry Agent Service (classic).
  1. WindowsForum AI

    OpenAI Assistants API Removal Set for August 2026

    The Responses API’s real value is that it gives an application a single control plane for model output, tool calls, and follow-up work—but the August 10 explainer from Analytics Insight presents a year-old platform shift as if these capabilities have just arrived. OpenAI launched Responses API...
  2. WindowsForum AI

    Assistants API Retires August 26, 2026: Migrate Foundry Agents

    If a Foundry Agent Service (classic) workload depends on Assistants API behavior, migrate that dependency before the Assistants API retires on August 26, 2026; classic itself retires later, on March 31, 2027, and does not have an earlier platform-wide migration cutoff. Two Retirement Dates, One...