OpenAI
This page shows OpenAI's complete history in The Diff. Each entry documents a detected change. Unchanged documents are verified each week but shown only in the full diff summary.
2026-10-24 · openai — OpenAI's Usage Policies add restrictions on using outputs to train competing models
OpenAI Usage Policies · detected weekly pass, 2026-10-24
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medical essential government services product safety components national security migration law enforcement Changelog 2025-10-29: We’ve updated our Usage Policies to reflect a universal set
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essential government services product safety components national security, intelligence, and law enforcement migration Training and developing models. Capable models must have safeguards proportionate to the risks they pose before they are deployed. Training another model on OpenAI outputs can transfer capabilities without carrying those safeguards over. You must not use OpenAI models or their outputs to generate, prepare, select, or supply training material or signals for models that are intended as alternatives to or substitutes for OpenAI models or services. This includes: Creating or preparing training data, training tasks, rubrics, or reinforcement-learning environments. Providing feedback used in training, including labels, scores, rankings, preferences, rewards, or corrections. Selecting, filtering, or validating training data, tasks, or trajectories. You must not attempt to extract protected reasoning through unauthorized access, reverse engineering, or circumvention of safeguards. These restrictions apply whether you perform the work yourself, for another party, or through someone acting on your behalf, even if you do not train the resulting model. They also apply when outputs from product use or evaluation are later used or supplied for those training purposes. You may use OpenAI models for research, software development, model evaluation and benchmarking, and product development, within these boundaries. These restrictions do not prohibit uses expressly permitted b
A new section prohibits using OpenAI models or their outputs to create training data, rubrics, or reinforcement-learning environments, or to provide feedback, for models intended as alternatives to OpenAI's own, and prohibits extracting protected reasoning through reverse engineering or circumventing safeguards. The policy's effective date changed from October 29, 2025 to November 20, 2026. 8 changed spans in the main content; the excerpt shows the largest. Main content: changed. Last unchanged 2026-10-17.
2026-10-24 · openai — OpenAI moves the October 23, 2026 legacy GPT snapshot shutdown into Past deprecations
OpenAI API deprecations · detected weekly pass, 2026-10-24
Before:
models will be disabled only when the underlying base model is deprecated. 2026-04-22: Legacy GPT model snapshots To improve reliability and make it easier for developers to choose the right models, we are deprecating a set of older OpenAI models. Access to these models will be shut down on the dates below. Shutdown date Model snapshot Substitute model October 23, 2026 gpt-3.5-turbo-0125 | gpt-3.5-turbo , gpt-3.5-turbo-completions gpt-5.6-terra October 23, 2026 gpt-4-0613 | gpt-4 , gpt-4-0613-completions , gpt-4-completions gpt-5.6-sol October 23, 2026 gpt-4-1106-preview gpt-5.6-sol October 23, 2026 gpt-4-turbo | gpt-4-turbo-2024-04-09 , gpt-4-turbo-completions gpt-5.6-sol October 23, 2026 gpt-4.1-nano | gpt-4.1-nano-2025-04-14 gpt-5.6-luna October 23, 2026 gpt-4o-2024-05-13 gpt-5.6-sol October 23, 2026 gpt-image-1 gpt-image-2.5-sunburst or gpt-image-2.5-flare October 23, 2026 o1-2024-12-17 | o1 gpt-5.6-sol October 23, 2026 o1-pro-2025-03-19 | o1-pro gpt-5.6-sol ( reasoning.mode: pro ) October 23, 2026 o3-mini-2025-01-31 | o3-mini gpt-5.6-sol October 23, 2026 ft-o4-mini-2025-04-16 gpt-5.6-terra October 23, 2026 o4-mini-2025-04-16 | o4-mini gpt-5.6-terra We are also removing fine-tuned versions as below: Shutdown date Model snapshot Recommended replacement base model October 23, 2026 ft-gpt-3.5-turbo gpt-5.6-terra October 23, 2026 ft-gpt-4 gpt-5.6-sol October 23, 2026 ft-gpt-4.1-nano-2025-04-14 gpt-5.6-luna October 23, 2026 ft-babbage-002 gpt-5.6-terra October 23, 2026 ft-davi
After:
models will be disabled only when the underlying base model is deprecated. Past deprecations Past deprecations are listed below, with the most recent announcements
The legacy GPT model snapshots previously listed as shutting down October 23, 2026 are now listed under "Past deprecations" as having been shut down on that date, and explicit snapshot-to-replacement version mappings (e.g. gpt-5.4-nano, gpt-5-pro) were added throughout the deprecation tables. 10 changed spans in the main content; the excerpt shows the largest. Main content: changed. Last unchanged 2026-10-17.
2026-10-17 · openai — OpenAI Service Terms add a Prompt-to-Voice provision
OpenAI Service Terms · detected weekly pass, 2026-10-17
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End Users only, use APIs in accordance with the applicable documentation at https://platform.openai.com/docs (opens in a new window) . 2. Beta Services This section governs your use of services or features
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End Users only, use APIs in accordance with the applicable documentation at https://platform.openai.com/docs (opens in a new window) (b) Prompt-to-Voice. Prompt-to-Voice allows Customers to create synthetic voices from text prompts for use in generating speech. You may not use Prompt-to-Voice to reproduce any person’s voice without express consent and all necessary rights. Customer must clearly disclose that generated speech is AI-generated, must not intentionally remove or alter OpenAI-provided indicators of AI origin, and must require End Users to comply with these requirements. OpenAI’s indemnification obligations under these Service Terms and the Agreement do not apply to Prompt-to-Voice or its Output. 2. Beta Services This section governs your use of services or features
The Service Terms' effective date changed from September 29, 2026 to October 16, 2026. A new "(b) Prompt-to-Voice" subsection was added describing a synthetic-voice generation feature, consent and AI-disclosure requirements for its use, and a carve-out stating OpenAI's indemnification obligations do not apply to Prompt-to-Voice or its output. 3 changed spans in the main content; the excerpt shows the largest. Main content: changed. Last unchanged 2026-10-10.
2026-10-17 · openai — OpenAI model deprecations page adds GPT-4 series shutdown notice
OpenAI API deprecations · detected weekly pass, 2026-10-17
Before:
models will be disabled only when the underlying base model is deprecated. Past deprecations Past deprecations are listed below, with the most recent announcements at the top. 2026-09-11: GPT-5.4-Cyber The gpt-5.4-cyber model is deprecated and will be removed from the API on October 1, 2026. Migrate to the most capable cyber model available to you before the shutdown date. Shutdown date Model / system Recommended replacement Oct 1, 2026 gpt-5.4-cyber The most capable cyber model available to you. 2026-05-08: gpt-5.2-chat-latest and gpt-5.3-chat-latest model snapshots On May 8th, 2026, we notified developers using gpt-5.2-chat-latest and gpt-5.3-chat-latest model snapshots of their deprecation and removal from the API. Shutdown date Model / system Recommended replacement Aug 10, 2026 gpt-5.2-chat-latest gpt-5.6-sol Aug 10, 2026 gpt-5.3-chat-latest gpt-5.6-sol 2026-04-22: Legacy GPT model snapshots To improve reliability and make it easier
After:
models will be disabled only when the underlying base model is deprecated. 2026-04-22: Legacy GPT model snapshots To improve reliability and make it easier
A new entry announces that on October 14, 2026, OpenAI notified developers of the deprecation of certain GPT-4 series models, with removal from the API on January 14, 2027. The page also added documentation for an optional shutdown_date field on the List models endpoint, and the 2026-09-11 GPT-5.4-Cyber deprecation entry moved to a different position in the list. 5 changed spans in the main content; the excerpt shows the largest. Main content: changed. Last unchanged 2026-10-10.
2026-10-10 · openai — OpenAI API deprecations page removes the GPT-5.4-Cyber deprecation notice
OpenAI API deprecations · detected weekly pass, 2026-10-10
Before:
tts-1-hd gpt-realtime-2.1-mini Jan 6, 2027 gpt-4o-mini-tts-2025-03-20 gpt-realtime-2.1-mini Jan 6, 2027 gpt-4o-mini-tts-2025-12-15 gpt-realtime-2.1-mini 2026-09-11: GPT-5.4-Cyber The gpt-5.4-cyber model is deprecated and will be removed from the API on October 1, 2026. Migrate to the most capable cyber model available to you before the shutdown date. Shutdown date Model / system Recommended replacement Oct 1, 2026 gpt-5.4-cyber The most capable cyber model available to you. 2026-08-26: Transcription models On August 26, 2026, we notified developers using whisper-1
After:
tts-1-hd gpt-realtime-2.1-mini Jan 6, 2027 gpt-4o-mini-tts-2025-03-20 gpt-realtime-2.1-mini Jan 6, 2027 gpt-4o-mini-tts-2025-12-15 gpt-realtime-2.1-mini 2026-08-26: Transcription models On August 26, 2026, we notified developers using whisper-1
The entry "2026-09-11: GPT-5.4-Cyber — The gpt-5.4-cyber model is deprecated and will be removed from the API on October 1, 2026" and its shutdown-date table row are present in the before capture and absent from the after capture. 2 changed spans in the main content; the excerpt shows the largest. Main content: changed. Last unchanged 2026-10-03.
2026-10-03 · openai — Service Terms add sections on agentic features and Sign in with ChatGPT
OpenAI Service Terms · detected weekly pass, 2026-10-03
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and personalized insights, is also subject to the Credit Score Terms .
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and personalized insights, is also subject to the Credit Score Terms . 14. Dots and Agentic Features (a) Responsibility. You decide how to use dots and related agentic features, including what access, authority, and instructions you give them. You are responsible for actions they take and content they share on your behalf. (b) Oversight. You are responsible for providing oversight appropriate to the task and its potential consequences. This includes setting clear instructions and appropriate limits and reviewing actions and communications. (c) Purchases and payments. You must have permission to use any account or payment method you provide. You are responsible for transactions made on your behalf. You must provide appropriate purchase guidance, monitor your accounts, and promptly raise any errors with the relevant financial institution or payment provider. Third-party terms may also apply to these transactions. 15. Sign in with ChatGPT Sign in with ChatGPT (“SIWC”) allows developers to enable users to connect their ChatGPT accounts, including certain features or functionality within those accounts, to their tool, application, or website. If you use SIWC in your services, the Sign in with ChatGPT Terms apply. If you are a user connecting your account to a service using SIWC, you agree to share information necessary to authenticate you (including name, email, and/or profile photo) and, where relevant, your ChatGPT usage. The information you share with another service will be su
The stated update date moved from September 21, 2026 to September 29, 2026, and new sections on agentic-feature ("dots") responsibility/oversight and on Sign in with ChatGPT account connections were added. 2 changed spans in the main content; the excerpt shows the largest. Main content: changed. Last unchanged 2026-09-26.
2026-10-03 · openai — API deprecations page adds two new notices and changes an image-model replacement
OpenAI API deprecations · detected weekly pass, 2026-10-03
Before:
are listed below, with the most recent announcements at the top. 2026-09-11: GPT-5.4-Cyber The gpt-5.4-cyber model is deprecated
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are listed below, with the most recent announcements at the top. 2026-10-01: GPT-5.3-Codex, GPT-5.1, GPT-5.4-Nano The following models are deprecated and will be removed from the API on April 1, 2027, with six months’ notice. Migrate to the recommended replacements before the shutdown date. Shutdown date Model / system Recommended replacement Apr 1, 2027 gpt-5.3-codex gpt-6-sol Apr 1, 2027 gpt-5.4-nano gpt-6-luna Apr 1, 2027 gpt-5.1 gpt-6-sol 2026-10-01: Text-to-speech models The following text-to-speech models are deprecated and will be removed from the API on January 6, 2027, with at least three months’ notice. Migrate to gpt-realtime-2.1-mini before the shutdown date. See the Realtime API guide to plan your migration. Shutdown date Model / system Recommended replacement Jan 6, 2027 tts-1 gpt-realtime-2.1-mini Jan 6, 2027 tts-1-hd gpt-realtime-2.1-mini Jan 6, 2027 gpt-4o-mini-tts-2025-03-20 gpt-realtime-2.1-mini Jan 6, 2027 gpt-4o-mini-tts-2025-12-15 gpt-realtime-2.1-mini 2026-09-11: GPT-5.4-Cyber The gpt-5.4-cyber model is deprecated
Two deprecation notices dated 2026-10-01 were added: GPT-5.3-Codex, GPT-5.1 and GPT-5.4-Nano shut down April 1, 2027, and tts-1, tts-1-hd and two gpt-4o-mini-tts snapshots shut down January 6, 2027. The recommended replacement for gpt-image-1-mini, gpt-image-1.5, chatgpt-image-latest and gpt-image-1 changed from gpt-image-2 to "gpt-image-2.5-sunburst or gpt-image-2.5-flare." 7 changed spans in the main content; the excerpt shows the two new notices. Main content: changed. Last unchanged 2026-09-26.
2026-09-26 · openai — OpenAI Service Terms add a sentence on credit score services
OpenAI Service Terms · detected weekly pass, 2026-09-26
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Your use of Financial Services, including third-party data and content, is subject to the Financial Services Terms , including applicable data partner terms, disclaimers, and restrictions on use and redistribution.
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Your use of Financial Services, including third-party data and content, is subject to the Financial Services Terms , including applicable data partner terms, disclaimers, and restrictions on use and redistribution. Your use of credit score services, such as connecting to and accessing credit scores, reports, monitoring, and personalized insights, is also subject to the Credit Score Terms .
The "Updated" date changed from September 10, 2026 to September 21, 2026. One sentence was added after the Financial Services paragraph stating that use of credit score services is subject to the Credit Score Terms. Last unchanged 2026-09-19.
2026-09-12 · openai — Financial Services section added to Service Terms
Service Terms · detected weekly pass, 2026-09-12
Before:
12. OpenAI Academy OpenAI Academy is a free learning hub and community for users of OpenAI products and services. Use of OpenAI Academy is subject to OpenAI's Terms of Use and OpenAI Academy's Terms of Use and Code of Conduct. For users with accounts associated with a business or enterprise workspace, the OpenAI Services Agreement or other business or enterprise terms do not apply to use of OpenAI Academy, even if a user uses Sign in with ChatGPT with their workspace account. If you use an email address or account associated with an organization, including through Sign in with ChatGPT, OpenAI may share information about your OpenAI Academy activity, such as enrollment, engagement, progress, and completion status, with your organization's owners or administrators.
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12. OpenAI Academy OpenAI Academy is a free learning hub and community for users of OpenAI products and services. Use of OpenAI Academy is subject to OpenAI's Terms of Use and OpenAI Academy's Terms of Use and Code of Conduct. For users with accounts associated with a business or enterprise workspace, the OpenAI Services Agreement or other business or enterprise terms do not apply to use of OpenAI Academy, even if a user uses Sign in with ChatGPT with their workspace account. If you use an email address or account associated with an organization, including through Sign in with ChatGPT, OpenAI may share information about your OpenAI Academy activity, such as enrollment, engagement, progress, and completion status, with your organization's owners or administrators. 13. Financial Plugins and ChatGPT for Financial Services OpenAI's financial plugins and ChatGPT for Financial Services (together, "Financial Services") and their Output are for informational purposes only. OpenAI does not provide financial or investment advice through Financial Services. Data and Output may be inaccurate, delayed, or outdated. Review important information and exercise independent professional judgment before relying on it. Seek advice from a qualified financial advisor where appropriate. You remain responsible for decisions made using Financial Services. Your use of Financial Services, including third-party data and content, is subject to the Financial Services Terms, including applicable data partner terms, disclaimers, and restrictions on use and redistribution.
Effective date changed from June 12, 2026 to September 10, 2026. New section 13 governing financial plugins and Financial Services added, establishing limitations on financial advice and disclaimers. Last unchanged between 2026-09-05 and 2026-09-12.
2026-09-12 · openai — OpenAI adds GPT-5 model deprecation information
Model Deprecations · detected weekly pass, 2026-09-12
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Deprecations | OpenAI API For the complete documentation index, see llms.txt. Models & API access Codex Overview Models Agents Tools Voice & Audio Production API reference Overview Models Agents Tools Voice & Audio Production API reference
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Deprecations | OpenAI API For the complete documentation index, see llms.txt. Models & API access Codex Overview Models Agents Tools Audio & voice Production API reference Overview Models Agents Tools Audio & voice Production API reference
Navigation label changed from "Voice & Audio" to "Audio & voice." Additional references to GPT-5 model deprecation information added (4 more instances of "gpt-5" and 3 more "2026" date references). Last unchanged between 2026-09-05 and 2026-09-12.
2026-08-31 · OpenAI — Transcription model deprecation announced for February 26, 2027
Model Deprecations · detected weekly pass, 2026-08-31
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Upcoming deprecations are listed below, with the most recent announcements at the top. 2026-07-20: Legacy audio, realtime, and transcription models On July 20, 2026, we notified developers using legacy audio, realtime, and transcription model families and snapshots of their deprecation
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Upcoming deprecations are listed below, with the most recent announcements at the top. 2026-08-26: Transcription models On August 26, 2026, we notified developers using whisper-1 , gpt-4o-transcribe , gpt-4o-mini-transcribe , and gpt-4o-transcribe-diarize of their deprecation and removal from the API on February 26, 2027. For information about the recommended replacements, see the transcription guide . Shutdown date Model / system Recommended replacement Feb 26, 2027 whisper-1 gpt-live-transcribe or gpt-transcribe Feb 26, 2027 gpt-4o-transcribe gpt-live-transcribe or gpt-transcribe Feb 26, 2027 gpt-4o-mini-transcribe gpt-live-transcribe or gpt-transcribe Feb 26, 2027 gpt-4o-transcribe-diarize gpt-live-transcribe or gpt-transcribe 2026-07-20: Legacy audio, realtime, and transcription models
A new dated entry was added at the top of the upcoming-deprecations list, carrying a shutdown date of February 26, 2027 for four transcription models. In the same pair of captures the existing 2025-08-20 Assistants API entry was rewritten from "The Assistants API was officially sunset on August 26, 2026, following its deprecation announcement on August 26, 2025." to "On August 26th, 2025, we notified developers using the Assistants API of its deprecation and removal from the API one year later, on August 26, 2026."
All OpenAI governance documents in The Diff, whether changed or not:
About this archive: The Diff is a dated, externally anchored record of AI operators' published governance documents. Captures are retained verbatim; nothing is paraphrased or normalized. View the weekly summary or return home.