OpenAI pulls GPT-5.5 from ChatGPT, Work, and Codex on Oct 14
Consumer and Codex users move to GPT-5.6 Sol; scripts and agents pinned to gpt-5.5 break unless migrated. The API is spared. Plus: a 35B model in 3GB.
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The deadline that hits your setup
On October 14, GPT-5.5 disappears from ChatGPT, ChatGPT Work, and Codex across every plan — consumer, Business, Enterprise, and Edu. The default replacement is GPT-5.6 Sol (gpt-5.6-sol).
What actually breaks
Anything still pointing at gpt-5.5 needs updating before the 14th: workspace defaults, saved model settings, managed configs, custom agents, scheduled tasks, and scripts. Miss one and it silently reroutes to the new model.
The API is your escape hatch
The retirement doesn't touch the OpenAI API — you can keep calling gpt-5.5 there. If a workflow depends on its exact behavior, move that call to the API instead of leaning on a Codex or ChatGPT surface.
Codex gets two migration targets
For Codex specifically, OpenAI points you to GPT-5.6 Sol or GPT-6 Astra — the latter GA in GitHub Copilot since Sept 4. Test both against your repo before you rewrite your agent config.
Elsewhere: a 35B model in 3GB of RAM
Edge0-35B-A3B streams its MoE experts off SSD with a trained router that predicts the next expert ahead of time, fitting a 35B model into ~3GB and running near 20 tok/s on a Mac mini. Weights and paper are public.