OpenAI's Assistants API shuts down Aug 26 — port your bots now
The beta behind thousands of production bots goes dark in 10 days. Responses API is the exit, Threads become Conversations, and Azure shares the deadline.
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10 days to a hard cutoff
OpenAI sunsets the Assistants API beta on August 26, 2026; after that, calls to /v1/assistants and /v1/threads stop working. Any agent still on those endpoints has days, not weeks, to move.
The Responses API is the exit
The replacement is the Responses API plus the new Conversations object. The mapping: Assistants become dashboard Prompts, Threads become Conversations, Runs become Responses — and the polling loop disappears, since Responses return output items synchronously.
What to grep for today
Search your codebase for beta.assistants and beta.threads; each call becomes a responses.create with conversation state. Built-in tools like file_search carry over, but there is no 1:1 Assistant object — you rebuild it as a reusable Prompt.
Azure users are on the same clock
Azure OpenAI's Assistants surface sunsets alongside OpenAI's, so managed-cloud deployments are not exempt. Plan the same Responses API migration before the 26th.
Elsewhere: Grok 4.6 reaches GitHub Copilot
xAI's Grok 4.6 — 1.5T params at about $2/$6 per million tokens, pitched at half the price of rival frontier models — is now selectable in GitHub Copilot for agentic coding, after landing in Cursor and the xAI API.