OpenAI

What happened at OpenAI

1. Sep 29

   GPT-6.1 Sol OpenAI adds GPT-6.1 Sol to Codex and ChatGPT Work, at a lower cost than Astra

2. Sep 29

   dots OpenAI launches dots, assistants that keep working on your projects and everyday tasks

3. Sep 22

   GPT-6 Sol OpenAI adds GPT-6 Sol and Luna to ChatGPT, Codex and the API

4. Sep 21

   What changed: GPT-6 Sol and a lighter Luna halve the price of OpenAI's mid-tier models

5. Sep 17

   ChatGPT ChatGPT comes to Microsoft Word on all plans, including Free

6. Sep 14

   What changed: Codex deprecates Spark and sets a GPT-5.5 retirement date

7. Sep 11

   ChatGPT Changed: OpenAI plans to retire custom GPTs in ChatGPT with a migration path to plugins

8. Sep 9

   OpenAI Codex Codex's command-line tool adds GPT-6 Astra

9. Sep 7

   What changed: OpenAI turns the Codex harness into a public-beta Agents API

10. Sep 7

    What changed: Codex CLI adds GPT-6-Astra to its model picker

11. Aug 31

    What changed: OpenAI announces GPT-6 Astra, starting with its top ChatGPT tiers and Codex

12. Aug 24

    What changed: Codex CLI 0.150.0 adds task mentions and stops trusting AGENTS.md in untrusted projects

13. Aug 24

    What changed: o3 leaves ChatGPT at the end of its sunset period