Models & Assistants
GPT-5.5 retires from ChatGPT, ChatGPT Work, and Codex on 14 October 2026
OpenAI has set 14 October 2026 as the hard retirement date for GPT-5.5 in ChatGPT, ChatGPT Work, and Codex. The API is unaffected.
Topic
GPT-5.5
8 posts about GPT-5.5 from Simon Carter.
Models & Assistants
OpenAI is retiring o3 from ChatGPT on 26 August 2026
OpenAI has set 26 August 2026 as the hard retirement date for o3 in ChatGPT, following a 90-day sunset period announced on 28 May 2026.
Cloud & Infrastructure
GPT-5.5, GPT-5.4, and Codex are now generally available on Amazon Bedrock
OpenAI's frontier models and Codex coding agent hit GA on Amazon Bedrock, with IAM access, VPC isolation, CloudTrail logging, and pay-per-token billing.
Models & Assistants
GPT-Live-1 is here: OpenAI's full-duplex voice model replaces Advanced Voice Mode globally
OpenAI's GPT-Live-1 and GPT-Live-1 mini launch July 8, replacing Advanced Voice Mode with simultaneous listen-and-speak AI powered by GPT-5.5 in the background.
Models & Assistants
ChatGPT's Model Picker Just Got a Rethink: Here's What the New Effort Tiers Mean for You
OpenAI is replacing named-model selection in ChatGPT with effort-based tiers — Instant, Medium, High, and more — rolling out to Plus and Pro users now.
Models & Assistants
GPT-5.5 Instant gets more readable — and Canvas is gone
OpenAI has improved GPT-5.5 Instant's response quality and quietly retired Canvas in favour of native writing and code blocks in chat.
Models & Assistants
GPT-5.2 Is Gone from ChatGPT — What the New 90-Day Sunset Policy Means for You
As of June 12, 2026, GPT-5.2 Instant, Thinking, and Pro are retired from ChatGPT, with all conversations auto-migrated to GPT-5.5 equivalents.
Models & Assistants
GPT-5.5 Instant is now the default ChatGPT model — here's what changed
OpenAI replaced GPT-5.3 Instant with GPT-5.5 Instant as ChatGPT's default model on May 5, 2026, bringing fewer hallucinations and tighter responses.