OpenAI API Shutdown Dates From November 30, 2026 to January 2027

Updated November 12, 2026 · first published November 12, 2026

OpenAI's own deprecations page schedules several API removals in the next eight weeks: Agent Builder, the Evals dashboard and API, and the reusable prompts API on November 30, 2026; gpt-image-1-mini, gpt-image-1.5 and chatgpt-image-latest on December 1; older GPT-5 and o3 snapshots on December 11; and GPT-4o and GPT-4.1 on January 14, 2027. Each one is a dated cost or migration step, so it belongs in the forecast as a line item with a date, not as a general trend.

Checked on November 12, 2026 against OpenAI's deprecations page at developers.openai.com/api/docs/deprecations, which the platform.openai.com/docs address redirects to. Dates can change, so recheck the page before you approve a budget.

Shutdown calendar

Shutdown date	What is removed	Replacement the page names
Oct 31, 2026	Existing evals become read-only (Evals platform)	Migration to Promptfoo suggested
Nov 30, 2026	Agent Builder; Evals dashboard and API; `v1/prompts` API and reusable prompt objects	Agents SDK or ChatGPT Workspace Agents; Promptfoo; move prompt text into application code
Dec 1, 2026	`gpt-image-1-mini`, `gpt-image-1.5` (`gpt-image-1.5-2025-12-16`)	`gpt-image-2.6-sunburst` or `gpt-image-2.6-flare`
Dec 11, 2026	`gpt-5`, `gpt-5-mini`, `gpt-5-nano`, `gpt-5-pro`, `o3`, `o3-pro` and their dated snapshots	`gpt-5.6-sol`, `gpt-5.6-terra` or `gpt-5.6-luna`, depending on the model
Jan 6, 2027	`tts-1`, `tts-1-hd`, `gpt-4o-mini-tts` snapshots	`gpt-realtime-2.1-mini`
Jan 14, 2027	GPT-4o and GPT-4o mini snapshots; GPT-4.1 and GPT-4.1 mini snapshots	`gpt-6-luna`

The same page also lists later entries outside the next eight weeks: gpt-5.5-cyber-preview on February 1, 2027 (announced November 5, 2026) and gpt-image-2 on February 10, 2027 (announced November 10, 2026). It also lists audio and realtime models, including gpt-realtime and gpt-audio, for January 20, 2027, and ends new fine-tuning jobs for existing customers on January 6, 2027.

What is dated and what is not

Agent Builder and Evals. The page gives the Nov 30 shutdown and the announcement date of June 3, 2026. The page also lists ChatKit as remaining available.
Reusable prompts. If your app loads prompts by ID from the dashboard, the v1/prompts API stops on Nov 30. Prompt text has to move into code or config before that date, and that work is an engineering cost, not an API bill line.
GPT-5 and o3 snapshots. The page says these were announced June 11, 2026 and are removed on Dec 11. Any workload pinned to a dated snapshot, not a floating alias, has to move.
GPT-4o and GPT-4.1. Announced October 14, 2026, removal January 14, 2027. The page lists the replacement as gpt-6-luna. Price the swap on the replacement's published rates, not on the model you are leaving.

A dated Sol promotion to check

The OpenAI pricing page states that "GPT-5.6 Sol's promotional pricing is available until November 30, 2026". It does not say which rates are promotional or what applies after that date. Our Q4 price calendar described the Sol promotion as available "at least through" November 21, 2026, based on an earlier read of the page. The pricing page now gives November 30, so update any forecast that used November 21 and do not assume a post-promotion rate until OpenAI publishes one.

How to put the dates in a forecast

List each removal as its own row with the date, the model ID and the replacement. The Dec 11 row alone covers six model IDs.
Find the workloads that call those IDs. Search your gateway logs or code for the exact snapshot names, not the family names. A floating alias may already point at a newer model.
Price the replacement at its published rate. Use the rate from the pricing page on the day you model it, and state the date you checked it.
Illustrative calculation. Suppose a workload moves 100 million input and 20 million output tokens per month to gpt-5.6-sol, and the pricing page's Standard short-context rate of $4 input and $20 output per million tokens applies. Input is 100 × $4 = $400, output is 20 × $20 = $400, so $800 per month before caching, batch discounts, tool fees and any promotion. The inputs are invented for the example; replace them with your own token counts.

What we have not verified

We read the deprecations page through a summarizing fetch, not by checking the rendered page or the API changelog line by line. Verify each date before a budget is approved.
We did not check whether other pages or the changelog give different dates from the deprecations page.
The post-promotion rate for GPT-5.6 Sol is not on the pages we read.
We did not check the replacement rates for gpt-6-luna, gpt-5.6-terra or the Sol replacement for GPT-5 against their pricing pages in this draft. Do that before using them in a cost model.

Frequently asked questions

When does OpenAI shut down Agent Builder and the Evals API?

OpenAI's deprecations page schedules Agent Builder, the Evals dashboard and API, and the v1/prompts API and reusable prompt objects to shut down on November 30, 2026. Existing evals become read-only on October 31, 2026, per the same page.

Which GPT-5 and o3 models are removed on December 11, 2026?

The deprecations page lists gpt-5, gpt-5-mini, gpt-5-nano, gpt-5-pro, o3 and o3-pro, along with their dated snapshots, for removal from the API on December 11, 2026.

When are GPT-4o and GPT-4.1 removed from the API?

The deprecations page gives January 14, 2027 for the GPT-4o and GPT-4.1 snapshots and lists gpt-6-luna as the replacement. It was announced October 14, 2026.

Does the GPT-5.6 Sol promotion end on November 21 or November 30?

OpenAI's pricing page says promotional pricing for GPT-5.6 Sol is available until November 30, 2026. The page does not state the rates that apply afterward, so earlier November 21 wording should be updated.

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