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AsOf is a temporal fact ledger: a structured, dated, sourced record of what is true and what changed, built for AI retrieval. Claims are facts; AsOf's descriptive text is CC BY 4.0; third-party material keeps its source license. Not investment advice.

Timelines
ChatGPT
Models

ChatGPT: models

69 model rows: releases, deprecations, retirements and default changes, newest first. A model's release appears once, from the model's own record. Current state →

Facts: users · owners · default model

kindAll140 Money & deals37 Products95 Models Other6

/timelines/chatgpt.md?only=models /v1/timelines/chatgpt?only=models

2026

October · 13

2026-10-26developers.openai.com+1, 2 sources, claim clm_D6FAF8FA79E0 model: GPT-6.1 Terramodel release GPT-6.1 Terra
2026-10-23developers.openai.com, 1 source, claim clm_ACA6CD832087 model: GPT-3.5 Turboretired gpt-3.5-turbo
2026-10-23platform.openai.com, 1 source, claim clm_CC48DB53DEE7 model: GPT-3.5 Turboretired gpt-3.5-turbo-0125
2026-10-23platform.openai.com, 1 source, claim clm_395B99AEDAA7 model: GPT-4retired gpt-4-0613
2026-10-23platform.openai.com, 1 source, claim clm_4B8049CC7FF3 model: GPT-4.1 nanoretired gpt-4.1-nano
2026-10-23platform.openai.com, 1 source, claim clm_4648369BACE0 model: GPT-4 Turboretired gpt-4-turbo
2026-10-14platform.openai.com, 1 source, claim clm_CD2CDDC451D7 model: GPT-4.1deprecated gpt-4.1-2025-04-14
2026-10-14platform.openai.com, 1 source, claim clm_D2EBB15E9F6A model: GPT-4.1 minideprecated gpt-4.1-mini-2025-04-14
2026-10-14platform.openai.com, 1 source, claim clm_AD4C595966FD model: GPT-4o minideprecated gpt-4o-mini-2024-07-18
2026-10-08help.openai.com, 1 source, claim clm_FB7688228F76 model: GPT-6 Lunadefault model GPT-6 Luna
2026-10-01platform.openai.com, 1 source, claim clm_45F34DC89114 model: GPT-5.1deprecated gpt-5.1
2026-10-01platform.openai.com, 1 source, claim clm_3C9D776B3539 model: GPT-5.3-Codexdeprecated gpt-5.3-codex
2026-10-01platform.openai.com, 1 source, claim clm_5833C2C65752 model: GPT-5.4 nanodeprecated gpt-5.4-nano

September · 4

2026-09-29developers.openai.com, 1 source, claim clm_470F0FA53E41 model: GPT-6.1 Solmodel release GPT-6.1 Sol
2026-09-22developers.openai.com, 1 source, claim clm_EDB3689D54AA model: GPT-6 Lunamodel release GPT-6 Luna
2026-09-22developers.openai.com, 1 source, claim clm_E9517019EA35 model: GPT-6 Solmodel release GPT-6 Sol
2026-09-03openai.com+3, 4 sources, claim clm_B42FECDD7A7C model: GPT-6 Astramodel release GPT-6 Astra

July · 7

2026-07-23platform.openai.com, 1 source, claim clm_98D4559904E8 model: GPT-5.1-Codexretired gpt-5.1-codex
2026-07-23platform.openai.com, 1 source, claim clm_FAC202E2646D model: GPT-5.1-Codex-Maxretired gpt-5.1-codex-max
2026-07-23platform.openai.com, 1 source, claim clm_A47735A69603 model: GPT-5.2-Codexretired gpt-5.2-codex
2026-07-23platform.openai.com, 1 source, claim clm_2156F7AEC297 model: GPT-5-Codexretired gpt-5-codex
2026-07-09developers.openai.com, 1 source, claim clm_7D050F738887 model: GPT-5.6 Lunamodel release GPT-5.6 Luna
2026-07-09developers.openai.com, 1 source, claim clm_C12115AD0193 model: GPT-5.6 Solmodel release GPT-5.6 Sol
2026-07-09developers.openai.com, 1 source, claim clm_22050E2F4B05 model: GPT-5.6 Terramodel release GPT-5.6 Terra

June · 3

2026-06-11platform.openai.com, 1 source, claim clm_354D03FA074A model: GPT-5deprecated gpt-5
2026-06-11platform.openai.com, 1 source, claim clm_6950A38DA756 model: GPT-5 minideprecated gpt-5-mini
2026-06-11platform.openai.com, 1 source, claim clm_5D6ADCAA0ED6 model: GPT-5 nanodeprecated gpt-5-nano

May · 1

2026-05-05openai.com, 1 source, claim clm_3F6A0AF9FB64 model: GPT-5.5 Instantmodel release GPT-5.5 Instant

April · 9

2026-04-24developers.openai.com, 1 source, claim clm_73BADC9F15B9 model: GPT-5.5model release GPT-5.5
2026-04-22platform.openai.com, 1 source, claim clm_4B9B17BAC65A model: GPT-3.5 Turbodeprecated gpt-3.5-turbo-0125
2026-04-22platform.openai.com, 1 source, claim clm_3D420E23B060 model: GPT-4deprecated gpt-4-0613
2026-04-22platform.openai.com, 1 source, claim clm_EA9D392DF52E model: GPT-4.1 nanodeprecated gpt-4.1-nano
2026-04-22platform.openai.com, 1 source, claim clm_BD195A16DDDE model: GPT-4 Turbodeprecated gpt-4-turbo
2026-04-22platform.openai.com, 1 source, claim clm_1CF75671E227 model: GPT-5.1-Codexdeprecated gpt-5.1-codex
2026-04-22platform.openai.com, 1 source, claim clm_188DEFE41A98 model: GPT-5.1-Codex-Maxdeprecated gpt-5.1-codex-max
2026-04-22platform.openai.com, 1 source, claim clm_734A67209664 model: GPT-5.2-Codexdeprecated gpt-5.2-codex
2026-04-22platform.openai.com, 1 source, claim clm_74750A72CC4B model: GPT-5-Codexdeprecated gpt-5-codex

March · 4

2026-03-17developers.openai.com, 1 source, claim clm_5186EBA31C65 model: GPT-5.4 minimodel release GPT-5.4 mini
2026-03-17developers.openai.com, 1 source, claim clm_F1CB1C61C001 model: GPT-5.4 nanomodel release GPT-5.4 nano
2026-03-05developers.openai.com, 1 source, claim clm_7D2AAD01D729 model: GPT-5.4model release GPT-5.4
2026-03-03developers.openai.com, 1 source, claim clm_8DBA95A24357 model: GPT-5.3 Instantmodel release GPT-5.3 Instant

February · 2

2026-02-24developers.openai.com, 1 source, claim clm_55F8E9407504 model: GPT-5.3-Codexmodel release gpt-5.3-codex
2026-02-12openai.com, 1 source, claim clm_221ABA357F76 model: GPT-5.3-Codex-Sparkmodel release GPT-5.3-Codex-Spark

January · 1

2026-01-14developers.openai.com, 1 source, claim clm_8DB02F1E0E6E model: GPT-5.2-Codexmodel release gpt-5.2-codex

2025

December · 3

2025-12-11developers.openai.com, 1 source, claim clm_B9F730643643 model: GPT-5model release GPT-5.2unverified
2025-12-11developers.openai.com, 1 source, claim clm_132F874E328F model: GPT-5.2model release GPT-5.2
2025-12-04developers.openai.com, 1 source, claim clm_926858D20AA8 model: GPT-5.1-Codex-Maxmodel release gpt-5.1-codex-max

November · 3

2025-11-13developers.openai.com, 1 source, claim clm_9E4BB33663B5 model: GPT-5.1model release GPT-5.1
2025-11-13developers.openai.com, 1 source, claim clm_E469597CD92B model: GPT-5.1-Codexmodel release gpt-5.1-codex
2025-11-12openai.com, 1 source, claim clm_A54757599DA5 model: GPT-5model release GPT-5.1 Thinking

September · 1

2025-09-23developers.openai.com, 1 source, claim clm_F340BE1BAF91 model: GPT-5-Codexmodel release gpt-5-codex

August · 3

2025-08-07openai.com+2, 3 sources, claim clm_CB61A8CFFB1B model: GPT-5model release gpt-5
2025-08-07developers.openai.com, 1 source, claim clm_089298151D4F model: GPT-5 minimodel release gpt-5-mini
2025-08-07developers.openai.com, 1 source, claim clm_B6BF47EF8EDA model: GPT-5 nanomodel release gpt-5-nano

July · 1

2025-07-14platform.openai.com, 1 source, claim clm_E536C3F7329F model: GPT-4.5retired gpt-4.5-preview

April · 4

2025-04-14platform.openai.com, 1 source, claim clm_F4F8B0B65988 model: GPT-4.5deprecated gpt-4.5-preview
2025-04-14developers.openai.com, 1 source, claim clm_0F5975E568EB model: GPT-4.1model release gpt-4.1
2025-04-14developers.openai.com, 1 source, claim clm_2943035ECD24 model: GPT-4.1 minimodel release gpt-4.1-mini
2025-04-14developers.openai.com, 1 source, claim clm_10E3D4744E71 model: GPT-4.1 nanomodel release gpt-4.1-nano

February · 1

2025-02-27developers.openai.com+2, 3 sources, claim clm_CD5AF70E4501 model: GPT-4.5model release GPT-4.5

2024

November · 1

2024-11-20developers.openai.com, 1 source, claim clm_3C8DF6684FA9 model: GPT-4omodel release gpt-4o-2024-11-20

August · 1

2024-08-06developers.openai.com, 1 source, claim clm_FA55F9E2772E model: GPT-4omodel release gpt-4o-2024-08-06

July · 1

2024-07-18developers.openai.com, 1 source, claim clm_4C19165DE14B model: GPT-4o minimodel release GPT-4o mini

May · 1

2024-05-13developers.openai.com, 1 source, claim clm_842D6855DED0 model: GPT-4omodel release GPT-4o

April · 1

2024-04-09developers.openai.com, 1 source, claim clm_BDC86BEEF443 model: GPT-4 Turbomodel release GPT-4 Turbo with Vision

February · 1

2024-02-01developers.openai.com, 1 source, claim clm_047FB3F20CB3 model: GPT-3.5 Turbomodel release gpt-3.5-turbo-0125

January · 1

2024-01-25developers.openai.com, 1 source, claim clm_38E5844BC4E0 model: GPT-4 Turbomodel release updated GPT-4 Turbo preview

2023

November · 1

2023-11-06developers.openai.com, 1 source, claim clm_FBF0123276F7 model: GPT-4 Turbomodel release GPT-4 Turbo Preview

March · 1

2023-03-14openai.com, 1 source, claim clm_8E4618D39503 model: GPT-4model release GPT-4