Release tracker

OpenAI model releases

Every dated OpenAI model release, newest first. The latest is GPT-5.6 Luna, released 9 Jul 2026, and 30 of the 46 run on Opper today.

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July 20263 releases
  1. 9 Jul
    GPT-5.6 Luna52
    GPT-5.6 Sol61
    GPT-5.6 Terra57
June 20261 release
  1. 25 Jun
    GPT-5.5 Instant (June 2026)29
May 20261 release
  1. 5 May
    GPT-5.5 Instant (May 2026)34
April 20262 releases
  1. 23 Apr
    GPT-5.556
    GPT-5.5 pro—
March 20264 releases
  1. 17 Mar
    GPT-5.4 Mini41
    GPT-5.4 Nano40
  2. 5 Mar
    GPT-5.453
    GPT-5.4 pro—
February 20261 release
  1. 5 Feb
    GPT-5.3 Codex46
December 20252 releases
  1. 11 Dec
    GPT-5.243
    GPT-5.2 Codex41
November 20253 releases
  1. 13 Nov
    GPT-5.138
    GPT-5.1 Codex36
    GPT-5.1 Codex Mini31
September 20251 release
  1. 23 Sep
    GPT-5 Codex37
August 20256 releases
  1. 7 Aug
    GPT-535
    GPT-5 (ChatGPT)15
    GPT-5 Mini26
    GPT-5 Nano20
  2. 5 Aug
    GPT OSS 120B24
    GPT OSS 20B15
June 20251 release
  1. 10 Jun
    O3 Pro33
April 20255 releases
  1. 16 Apr
    O331
    O4 Mini26
  2. 14 Apr
    GPT-4.120
    GPT-4.1 Mini15
    GPT-4.1 Nano10
March 20252 releases
  1. 27 Mar
    GPT-4o (March 2025, chatgpt-4o-latest)12
  2. 19 Mar
    O1 Pro19
February 20252 releases
  1. 27 Feb
    GPT-4.5 (Preview)14
  2. 15 Feb
    GPT-4o (ChatGPT)8
January 20251 release
  1. 31 Jan
    O3 Mini19
December 20243 releases
  1. 17 Dec
    GPT-4o mini Realtime (Dec '24)—
    GPT-4o Realtime (Dec '24)—
  2. 5 Dec
    O124
November 20241 release
  1. 20 Nov
    GPT-4o11
September 20242 releases
  1. 12 Sep
    o1-mini14
    o1-preview17
July 20241 release
  1. 18 Jul
    GPT-4o Mini7
November 20231 release
  1. 6 Nov
    GPT-4 Turbo8
June 20231 release
  1. 13 Jun
    GPT-3.5 Turbo (0613)—
March 20231 release
  1. 14 Mar
    GPT-47
November 20221 release
  1. 30 Nov
    GPT-3.5 Turbo3

Release dates and intelligence scores from Artificial Analysis, cross-checked against vendor announcements. Follow new releases via RSS.

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