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OpenAI API · Closing down · Announced June 3, 2026 · Sources checked Oct 13

Time to bail on OpenAI Evals, reusable prompts and Agent Builder?

Time to Bail · Boarding pass

FromOpenAI Evals, reusable prompts and Agent Builder
ToYour pick

Yes.

All three shut down November 30, 2026. Evals turn read-only on October 31, 2026.[1]

Bail means: it is ending, or getting much worse, for this group. Leave before the date.

Gate closes
Shutdown date
Time left
45days
Status
Bail

OpenAI Evals, reusable prompts and Agent Builder shut down November 30

OpenAI shuts down three tools on November 30, 2026: Evals, reusable prompts (the v1/prompts API) and Agent Builder. Your evals turn read-only on October 31, 2026.

How it is winding down

  1. Jun 3AnnouncedDone
  2. Oct 31Existing evals become read-onlyNext
  3. Nov 30Shutdown date

What to do before November 30

Tick steps as you go. Your progress stays in this browser.

  1. Copy your evals before October 31

    After October 31 they are read-only. Save the test data and grader settings you use.

  2. Move prompt text into your code

    Copy each reusable prompt into your app and stop calling the v1/prompts API.

  3. Rebuild agents with the Agents SDK

    Agent Builder ends November 30. ChatKit stays available.

Facts we checked

Facts and their sources
Shutdown dateNovember 30, 2026[1]
Existing evals become read-onlyOctober 31, 2026[1]
Reusable promptsThe v1/prompts API and reusable prompt objects shut down[1]
What to do with promptsMove reusable prompt content into your application code[1]
What to do with evalsOpenAI points to a guide for moving to Promptfoo[1]
What to do with Agent BuilderContinue with the Agents SDK or ChatGPT Workspace Agents; ChatKit remains available[1]
AnnouncedJune 3, 2026[1]
Users of these three toolsLose them on November 30, 2026[1]

Sources

Check it yourself. Every fact above links here.

  1. OpenAI API deprecations OpenAI · primary · checked Oct 13
  2. Moving from OpenAI Evals to Promptfoo OpenAI · primary · checked Oct 13
Read the published editorial report

What changed

Time to bail on OpenAI Evals, reusable prompts and Agent Builder? Yes. All three shut down November 30, 2026. Evals turn read-only on October 31, 2026.

On our scale this is Bail: it is ending, or getting much worse, for this group. Move your work out now.

OpenAI shuts down three tools on November 30, 2026: Evals, reusable prompts (the v1/prompts API) and Agent Builder. Your evals turn read-only on October 31, 2026.

Here are the facts we checked:

  • Shutdown date: November 30, 2026 (OpenAI)
  • Existing evals become read-only: October 31, 2026 (OpenAI)
  • Reusable prompts: The v1/prompts API and reusable prompt objects shut down (OpenAI)
  • What to do with prompts: Move reusable prompt content into your application code (OpenAI)
  • What to do with evals: OpenAI points to a guide for moving to Promptfoo (OpenAI)
  • What to do with Agent Builder: Continue with the Agents SDK or ChatGPT Workspace Agents; ChatKit remains available (OpenAI)
  • Announced: June 3, 2026 (OpenAI)
  • Users of these three tools: Lose them on November 30, 2026 (OpenAI)

This is a full shutdown, not a pause. When the service closes, files and lists you did not save may be gone.

Do not wait for a last reminder email. Those emails are often late, and some never come.

OpenAI is the main source for this page. OpenAI API has not said more than what is listed here. If a fact is not on this page, we do not know it yet.

Who is affected

Users of these three tools: Lose them on November 30, 2026.

Export takes some work. Do not leave it for the last day.

The date to remember is November 30, 2026. After that, it may be too late to save what you need.

What to do before November 30

  1. Copy your evals before October 31. After October 31 they are read-only. Save the test data and grader settings you use.
  2. Move prompt text into your code. Copy each reusable prompt into your app and stop calling the v1/prompts API.
  3. Rebuild agents with the Agents SDK. Agent Builder ends November 30. ChatKit stays available.

A few rules help every move go well:

  • Save what you can first. Pick the new tool after that.
  • Keep every export in two places, like your laptop and a cloud drive.
  • Test the new tool with a small part of your data before you move it all.
  • Tell your users or team once, in one short and clear message.

How to tell your users

Send one short email. Say what changed, where to find you now, and what they need to do. Put the most important line first.

If there is a date, send a short reminder a few days before it. Keep a copy of the list you sent it to.

Options people mention

Listed for convenience. Not ranked. Not paid. These names come up in threads and reviews; that does not show where people moved.

Before you pay, check the price page of each tool yourself. Prices change, and we only list what our sources say.

Questions people ask

No questions collected yet.

Sources

Thanks.

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