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

OpenAI Evals, reusable prompts and Agent Builder closes: readers save what they can and replace that one function.

45 days left · November 30, 2026 · Public page

Medium switching pressure45/100

An estimate from the deadline, cost, discussion and need to move. It is not a product rating.

What goes into it

Confidence: medium.

deadline24/30
money14/25
attention0/25
audience0/12
force7/8
  • Hard deadline in 45 days.
  • The change is forced: it reaches users even if they wait.

  1. 1 Related discussions

    Only threads tied to this event that talk about leaving, moving or prices. Saved, not live. Check the date and read the thread before replying.

    No live threads yet.

  2. 2 What leavers ask

    No common questions yet.

  3. 3 Reply templates

    Answer the question first. Link only if it helps. Always keep the disclosure line. Never post the same text twice.

    Helpful first
    Sorry you have to deal with this. OpenAI Evals, reusable prompts and Agent Builder closes on November 30, 2026. Save what you can first:

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.

To replace OpenAI Evals, reusable prompts and Agent Builder, describe a verified way <your product> can help: <your link>
[Disclosure: I build <your product>.]
    Short answer
    OpenAI Evals, reusable prompts and Agent Builder closes on November 30, 2026. Save what you can first: copy your evals before October 31. Then move prompt text into your code.
Happy to help if you get stuck with the move.
[Disclosure: I build <your product>.]

  4. 4 Switch-page builder

    Create a draft “Switch from OpenAI Evals, reusable prompts and Agent Builder” page. Add your product, review every claim, then copy HTML or Markdown. Your product claims need your own evidence.

    • Add your product name to replace “Your product”.
    Preview

    Switch from OpenAI API to Your product

    OpenAI Evals, reusable prompts and Agent Builder closes on November 30. Here is how to save what you can and move to Your product.

    What closes at OpenAI API

    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.

    • 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.

    What Your product gives you

    Write two or three short lines here. Say what Your product does, who it is for, and what it costs. Use only facts you can show.

    How to move from OpenAI Evals, reusable prompts and Agent Builder to Your product

    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.
    4. Import into Your product. Say which files you accept and how long an import takes.

    Tell readers the key date: November 30, 2026.

    Questions people ask

    If Your product has a direct answer to one of these, add it here. Keep it short and true.

    How to help new users settle in

    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.

    Sources

  5. 5 Search ideas to validate

    suggested, not measured Phrases people may search when a tool changes like this. We have no search volume data for them.

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