landscape
Search⌘KSubmit a productSign in

Map / Core AI / Foundation Models / ChatGPT / Sol

GPT Sol

by OpenAI · part of ChatGPT · Text

OpenAI's flagship GPT line: the unsuffixed GPT-4 to GPT-5.5 models, named Sol from GPT-5.6, for complex coding and professional work.

Latest version

Sol 6.129 Sep 2026 · 29 days ago

Versions

13since GPT-4 in March 2023

Typical gap

75 daysmedian between versions, last 12 months

All versions

VersionReleasedAfter previousStatusComes asSource
GPT-6.1 Sol29 Sep 20267 daysLatestdevelopers.openai.com
GPT-6 Sol22 Sep 202675 daysdevelopers.openai.com
GPT-5.6 Sol9 Jul 202677 daysGPT-5.6 Cyberdevelopers.openai.com
GPT-5.523 Apr 202649 daysGPT-5.5 Prodevelopers.openai.com
GPT-5.45 Mar 202684 daysGPT-5.4 ProGPT-5.4-Cyberdevelopers.openai.com
GPT-5.211 Dec 202529 daysGPT-5.2 ProGPT-5.2 ChatGPT-5.2-Codexdevelopers.openai.com
GPT-5.112 Nov 202597 daysDeprecatedGPT-5.1 ChatGPT-5.1-CodexGPT-5.1-Codex-MiniGPT-5.1-Codex-Maxopenai.com
GPT-57 Aug 2025115 daysDeprecatedGPT-5 ProGPT-5 ChatGPT-5-Codexdevelopers.openai.com
GPT-4.114 Apr 202546 daysDeprecateddevelopers.openai.com
GPT-4.527 Feb 2025290 daysRetireddevelopers.openai.com
GPT-4o13 May 202434 daysDeprecatedChatGPT-4oGPT-4o Search Previewdevelopers.openai.com
GPT-4 Turbo9 Apr 2024392 daysRetiredGPT-4 Turbo with Visiondevelopers.openai.com
GPT-414 Mar 2023FirstRetiredGPT-4-32kopenai.com

Dates from OpenAI's own announcements; each row links to its source.

The ChatGPT family

2023202420252026TodayAstraGPT-6 Astra, 3 Sep 20266SolGPT-4, 14 Mar 20234GPT-4 Turbo, 9 Apr 2024GPT-4o, 13 May 20244oGPT-4.5, 27 Feb 2025, previewGPT-4.1, 14 Apr 20254.1GPT-5, 7 Aug 20255GPT-5.1, 12 Nov 2025GPT-5.2, 11 Dec 20255.2GPT-5.4, 5 Mar 2026GPT-5.5, 23 Apr 20265.5GPT-5.6 Sol, 9 Jul 20265.6GPT-6 Sol, 22 Sep 2026GPT-6.1 Sol, 29 Sep 20266.1TerraGPT-4o mini, 18 Jul 20244oGPT-4.1 mini, 14 Apr 20254.1GPT-5 mini, 7 Aug 20255GPT-5.4 mini, 17 Mar 20265.4GPT-5.6 Terra, 9 Jul 20265.6LunaGPT-4.1 nano, 14 Apr 20254.1GPT-5 nano, 7 Aug 20255GPT-5.4 nano, 17 Mar 20265.4GPT-5.6 Luna, 9 Jul 20265.6GPT-6 Luna, 22 Sep 20266o-seriesOpenAI o1, 5 Dec 20241OpenAI o3, 16 Apr 2025OpenAI o4-mini, 16 Apr 20254

VersionPreviewLatest version

Questions

What is the latest version of GPT Sol?

GPT-6.1 Sol, released on 29 Sep 2026.

When was GPT-6 Sol released?

GPT-6 Sol came out on 22 Sep 2026.

When was GPT-5.6 Sol released?

GPT-5.6 Sol came out on 9 Jul 2026.

When was GPT-5.5 released?

GPT-5.5 came out on 23 Apr 2026.

How often is there a new GPT Sol?

Over the last 12 months a new version came about every 75 days (the median gap). 13 versions have come out since GPT-4 in March 2023.