Shutdowns in September 2027
Each row is a date published on an official page. "Not sooner than" is a floor, not a confirmed shutdown day. All deadlines · iCal · RSS
| When | Model | Provider | Status |
|---|---|---|---|
| Not sooner than 2027-09-01 | claude-fable-5-1 | Anthropic | active |
| Not sooner than 2027-09-01 | claude-mythos-5-1 | Anthropic | active |
| Not sooner than 2027-09-02 | gemini-3.8-flash | Google Vertex AI | active |
| 2027-09-02 | gpt-5.4-2026-03-05 | Azure OpenAI | active |
| 2027-09-07 | gpt-5.4-pro-2026-03-05 | Azure OpenAI | active |
| 2027-09-09 | gpt-image-2.5-flare-2026-09-09 | Azure OpenAI | active |
| 2027-09-09 | gpt-image-2.5-sunburst-2026-09-09 | Azure OpenAI | active |
| 2027-09-21 | gpt-5.4-mini-2026-03-17 | Azure OpenAI | active |
| 2027-09-21 | gpt-5.4-nano-2026-03-17 | Azure OpenAI | active |
| Not sooner than 2027-09-22 | claude-opus-5-5 | Anthropic | active |
| Not sooner than 2027-09-25 | gemini-3.8-live | Google Vertex AI | active |
| Not sooner than 2027-09-28 | claude-sonnet-5-5 | Anthropic | active |