# ChatGPT timeline: models

entity: /record/chatgpt.md  
full timeline: /timelines/chatgpt.md  

Model releases, deprecations, retirements, predecessors and default changes, oldest first. A model's row is on the model's own record.


## 2023

- 2023-03-14 | model_release | [GPT-4](/record/gpt-4.md) | GPT-4 | valid | [clm_8E4618D39503](/claim/clm_8E4618D39503.md)
- 2023-11-06 | model_release | [GPT-4 Turbo](/record/gpt-4-turbo.md) | GPT-4 Turbo Preview | valid | [clm_FBF0123276F7](/claim/clm_FBF0123276F7.md)

## 2024

- 2024-01-25 | model_release | [GPT-4 Turbo](/record/gpt-4-turbo.md) | updated GPT-4 Turbo preview | valid | [clm_38E5844BC4E0](/claim/clm_38E5844BC4E0.md)
- 2024-02-01 | model_release | [GPT-3.5 Turbo](/record/gpt-3-5-turbo.md) | gpt-3.5-turbo-0125 | valid | [clm_047FB3F20CB3](/claim/clm_047FB3F20CB3.md)
- 2024-04-09 | model_release | [GPT-4 Turbo](/record/gpt-4-turbo.md) | GPT-4 Turbo with Vision | valid | [clm_BDC86BEEF443](/claim/clm_BDC86BEEF443.md)
- 2024-05-13 | model_release | [GPT-4o](/record/gpt-4o.md) | GPT-4o | valid | [clm_842D6855DED0](/claim/clm_842D6855DED0.md)
- 2024-07-18 | model_release | [GPT-4o mini](/record/gpt-4o-mini.md) | GPT-4o mini | valid | [clm_4C19165DE14B](/claim/clm_4C19165DE14B.md)
- 2024-08-06 | model_release | [GPT-4o](/record/gpt-4o.md) | gpt-4o-2024-08-06 | valid | [clm_FA55F9E2772E](/claim/clm_FA55F9E2772E.md)
- 2024-11-20 | model_release | [GPT-4o](/record/gpt-4o.md) | gpt-4o-2024-11-20 | valid | [clm_3C8DF6684FA9](/claim/clm_3C8DF6684FA9.md)

## 2025

- 2025-02-27 | model_release | [GPT-4.5](/record/gpt-4-5.md) | GPT-4.5 | valid | [clm_CD5AF70E4501](/claim/clm_CD5AF70E4501.md)
- 2025-04-14 | deprecated | [GPT-4.5](/record/gpt-4-5.md) | gpt-4.5-preview | valid | [clm_F4F8B0B65988](/claim/clm_F4F8B0B65988.md)
- 2025-04-14 | model_release | [GPT-4.1](/record/gpt-4-1.md) | gpt-4.1 | valid | [clm_0F5975E568EB](/claim/clm_0F5975E568EB.md)
- 2025-04-14 | model_release | [GPT-4.1 mini](/record/gpt-4-1-mini.md) | gpt-4.1-mini | valid | [clm_2943035ECD24](/claim/clm_2943035ECD24.md)
- 2025-04-14 | model_release | [GPT-4.1 nano](/record/gpt-4-1-nano.md) | gpt-4.1-nano | valid | [clm_10E3D4744E71](/claim/clm_10E3D4744E71.md)
- 2025-07-14 | retired | [GPT-4.5](/record/gpt-4-5.md) | gpt-4.5-preview | valid | [clm_E536C3F7329F](/claim/clm_E536C3F7329F.md)
- 2025-08-07 | model_release | [GPT-5](/record/gpt-5.md) | gpt-5 | valid | [clm_CB61A8CFFB1B](/claim/clm_CB61A8CFFB1B.md)
- 2025-08-07 | model_release | [GPT-5 mini](/record/gpt-5-mini.md) | gpt-5-mini | valid | [clm_089298151D4F](/claim/clm_089298151D4F.md)
- 2025-08-07 | model_release | [GPT-5 nano](/record/gpt-5-nano.md) | gpt-5-nano | valid | [clm_B6BF47EF8EDA](/claim/clm_B6BF47EF8EDA.md)
- 2025-09-23 | model_release | [GPT-5-Codex](/record/gpt-5-codex.md) | gpt-5-codex | valid | [clm_F340BE1BAF91](/claim/clm_F340BE1BAF91.md)
- 2025-11-12 | model_release | [GPT-5](/record/gpt-5.md) | GPT-5.1 Thinking | valid | [clm_A54757599DA5](/claim/clm_A54757599DA5.md)
- 2025-11-13 | model_release | [GPT-5.1](/record/gpt-5-1.md) | GPT-5.1 | valid | [clm_9E4BB33663B5](/claim/clm_9E4BB33663B5.md)
- 2025-11-13 | model_release | [GPT-5.1-Codex](/record/gpt-5-1-codex.md) | gpt-5.1-codex | valid | [clm_E469597CD92B](/claim/clm_E469597CD92B.md)
- 2025-12-04 | model_release | [GPT-5.1-Codex-Max](/record/gpt-5-1-codex-max.md) | gpt-5.1-codex-max | valid | [clm_926858D20AA8](/claim/clm_926858D20AA8.md)
- 2025-12-11 | model_release | [GPT-5](/record/gpt-5.md) | GPT-5.2 | unverified | [clm_B9F730643643](/claim/clm_B9F730643643.md)
- 2025-12-11 | model_release | [GPT-5.2](/record/gpt-5-2.md) | GPT-5.2 | valid | [clm_132F874E328F](/claim/clm_132F874E328F.md)

## 2026

- 2026-01-14 | model_release | [GPT-5.2-Codex](/record/gpt-5-2-codex.md) | gpt-5.2-codex | valid | [clm_8DB02F1E0E6E](/claim/clm_8DB02F1E0E6E.md)
- 2026-02-12 | model_release | [GPT-5.3-Codex-Spark](/record/gpt-5-3-codex-spark.md) | GPT-5.3-Codex-Spark | valid | [clm_221ABA357F76](/claim/clm_221ABA357F76.md)
- 2026-02-24 | model_release | [GPT-5.3-Codex](/record/gpt-5-3-codex.md) | gpt-5.3-codex | valid | [clm_55F8E9407504](/claim/clm_55F8E9407504.md)
- 2026-03-03 | model_release | [GPT-5.3 Instant](/record/gpt-5-3-instant.md) | GPT-5.3 Instant | valid | [clm_8DBA95A24357](/claim/clm_8DBA95A24357.md)
- 2026-03-05 | model_release | [GPT-5.4](/record/gpt-5-4.md) | GPT-5.4 | valid | [clm_7D2AAD01D729](/claim/clm_7D2AAD01D729.md)
- 2026-03-17 | model_release | [GPT-5.4 mini](/record/gpt-5-4-mini.md) | GPT-5.4 mini | valid | [clm_5186EBA31C65](/claim/clm_5186EBA31C65.md)
- 2026-03-17 | model_release | [GPT-5.4 nano](/record/gpt-5-4-nano.md) | GPT-5.4 nano | valid | [clm_F1CB1C61C001](/claim/clm_F1CB1C61C001.md)
- 2026-04-22 | deprecated | [GPT-3.5 Turbo](/record/gpt-3-5-turbo.md) | gpt-3.5-turbo-0125 | valid | [clm_4B9B17BAC65A](/claim/clm_4B9B17BAC65A.md)
- 2026-04-22 | deprecated | [GPT-4](/record/gpt-4.md) | gpt-4-0613 | valid | [clm_3D420E23B060](/claim/clm_3D420E23B060.md)
- 2026-04-22 | deprecated | [GPT-4.1 nano](/record/gpt-4-1-nano.md) | gpt-4.1-nano | valid | [clm_EA9D392DF52E](/claim/clm_EA9D392DF52E.md)
- 2026-04-22 | deprecated | [GPT-4 Turbo](/record/gpt-4-turbo.md) | gpt-4-turbo | valid | [clm_BD195A16DDDE](/claim/clm_BD195A16DDDE.md)
- 2026-04-22 | deprecated | [GPT-5.1-Codex](/record/gpt-5-1-codex.md) | gpt-5.1-codex | valid | [clm_1CF75671E227](/claim/clm_1CF75671E227.md)
- 2026-04-22 | deprecated | [GPT-5.1-Codex-Max](/record/gpt-5-1-codex-max.md) | gpt-5.1-codex-max | valid | [clm_188DEFE41A98](/claim/clm_188DEFE41A98.md)
- 2026-04-22 | deprecated | [GPT-5.2-Codex](/record/gpt-5-2-codex.md) | gpt-5.2-codex | valid | [clm_734A67209664](/claim/clm_734A67209664.md)
- 2026-04-22 | deprecated | [GPT-5-Codex](/record/gpt-5-codex.md) | gpt-5-codex | valid | [clm_74750A72CC4B](/claim/clm_74750A72CC4B.md)
- 2026-04-24 | model_release | [GPT-5.5](/record/gpt-5-5.md) | GPT-5.5 | valid | [clm_73BADC9F15B9](/claim/clm_73BADC9F15B9.md)
- 2026-05-05 | model_release | [GPT-5.5 Instant](/record/gpt-5-5-instant.md) | GPT-5.5 Instant | valid | [clm_3F6A0AF9FB64](/claim/clm_3F6A0AF9FB64.md)
- 2026-06-11 | deprecated | [GPT-5](/record/gpt-5.md) | gpt-5 | valid | [clm_354D03FA074A](/claim/clm_354D03FA074A.md)
- 2026-06-11 | deprecated | [GPT-5 mini](/record/gpt-5-mini.md) | gpt-5-mini | valid | [clm_6950A38DA756](/claim/clm_6950A38DA756.md)
- 2026-06-11 | deprecated | [GPT-5 nano](/record/gpt-5-nano.md) | gpt-5-nano | valid | [clm_5D6ADCAA0ED6](/claim/clm_5D6ADCAA0ED6.md)
- 2026-07-09 | model_release | [GPT-5.6 Luna](/record/gpt-5-6-luna.md) | GPT-5.6 Luna | valid | [clm_7D050F738887](/claim/clm_7D050F738887.md)
- 2026-07-09 | model_release | [GPT-5.6 Sol](/record/gpt-5-6-sol.md) | GPT-5.6 Sol | valid | [clm_C12115AD0193](/claim/clm_C12115AD0193.md)
- 2026-07-09 | model_release | [GPT-5.6 Terra](/record/gpt-5-6-terra.md) | GPT-5.6 Terra | valid | [clm_22050E2F4B05](/claim/clm_22050E2F4B05.md)
- 2026-07-23 | retired | [GPT-5.1-Codex](/record/gpt-5-1-codex.md) | gpt-5.1-codex | valid | [clm_98D4559904E8](/claim/clm_98D4559904E8.md)
- 2026-07-23 | retired | [GPT-5.1-Codex-Max](/record/gpt-5-1-codex-max.md) | gpt-5.1-codex-max | valid | [clm_FAC202E2646D](/claim/clm_FAC202E2646D.md)
- 2026-07-23 | retired | [GPT-5.2-Codex](/record/gpt-5-2-codex.md) | gpt-5.2-codex | valid | [clm_A47735A69603](/claim/clm_A47735A69603.md)
- 2026-07-23 | retired | [GPT-5-Codex](/record/gpt-5-codex.md) | gpt-5-codex | valid | [clm_2156F7AEC297](/claim/clm_2156F7AEC297.md)
- 2026-09-03 | model_release | [GPT-6 Astra](/record/gpt-6-astra.md) | GPT-6 Astra | valid | [clm_B42FECDD7A7C](/claim/clm_B42FECDD7A7C.md)
- 2026-09-22 | model_release | [GPT-6 Luna](/record/gpt-6-luna.md) | GPT-6 Luna | valid | [clm_EDB3689D54AA](/claim/clm_EDB3689D54AA.md)
- 2026-09-22 | model_release | [GPT-6 Sol](/record/gpt-6-sol.md) | GPT-6 Sol | valid | [clm_E9517019EA35](/claim/clm_E9517019EA35.md)
- 2026-09-29 | model_release | [GPT-6.1 Sol](/record/gpt-6-1-sol.md) | GPT-6.1 Sol | valid | [clm_470F0FA53E41](/claim/clm_470F0FA53E41.md)
- 2026-10-01 | deprecated | [GPT-5.1](/record/gpt-5-1.md) | gpt-5.1 | valid | [clm_45F34DC89114](/claim/clm_45F34DC89114.md)
- 2026-10-01 | deprecated | [GPT-5.3-Codex](/record/gpt-5-3-codex.md) | gpt-5.3-codex | valid | [clm_3C9D776B3539](/claim/clm_3C9D776B3539.md)
- 2026-10-01 | deprecated | [GPT-5.4 nano](/record/gpt-5-4-nano.md) | gpt-5.4-nano | valid | [clm_5833C2C65752](/claim/clm_5833C2C65752.md)
- 2026-10-08 | default_model | [GPT-6 Luna](/record/gpt-6-luna.md) | GPT-6 Luna | valid | [clm_FB7688228F76](/claim/clm_FB7688228F76.md)
- 2026-10-14 | deprecated | [GPT-4.1](/record/gpt-4-1.md) | gpt-4.1-2025-04-14 | valid | [clm_CD2CDDC451D7](/claim/clm_CD2CDDC451D7.md)
- 2026-10-14 | deprecated | [GPT-4.1 mini](/record/gpt-4-1-mini.md) | gpt-4.1-mini-2025-04-14 | valid | [clm_D2EBB15E9F6A](/claim/clm_D2EBB15E9F6A.md)
- 2026-10-14 | deprecated | [GPT-4o mini](/record/gpt-4o-mini.md) | gpt-4o-mini-2024-07-18 | valid | [clm_AD4C595966FD](/claim/clm_AD4C595966FD.md)
- 2026-10-23 | retired | [GPT-3.5 Turbo](/record/gpt-3-5-turbo.md) | gpt-3.5-turbo | valid | [clm_ACA6CD832087](/claim/clm_ACA6CD832087.md)
- 2026-10-23 | retired | [GPT-3.5 Turbo](/record/gpt-3-5-turbo.md) | gpt-3.5-turbo-0125 | valid | [clm_CC48DB53DEE7](/claim/clm_CC48DB53DEE7.md)
- 2026-10-23 | retired | [GPT-4](/record/gpt-4.md) | gpt-4-0613 | valid | [clm_395B99AEDAA7](/claim/clm_395B99AEDAA7.md)
- 2026-10-23 | retired | [GPT-4.1 nano](/record/gpt-4-1-nano.md) | gpt-4.1-nano | valid | [clm_4B8049CC7FF3](/claim/clm_4B8049CC7FF3.md)
- 2026-10-23 | retired | [GPT-4 Turbo](/record/gpt-4-turbo.md) | gpt-4-turbo | valid | [clm_4648369BACE0](/claim/clm_4648369BACE0.md)
- 2026-10-26 | model_release | [GPT-6.1 Terra](/record/gpt-6-1-terra.md) | GPT-6.1 Terra | valid | [clm_D6FAF8FA79E0](/claim/clm_D6FAF8FA79E0.md)