AI model deprecations in September 2027
Model deprecations by provider, with effective dates and the exact listings affected. Other versions or providers may still be available.
Deprecated this month
No deprecations recorded for this period.
Scheduled for deprecation
These dates are still ahead. Entries join the RSS feed when their effective date arrives.
| Effective date | Model | API provider | Affected listings |
|---|---|---|---|
| Claude Opus 4.8 | Azure AI Foundry | azure_ai/claude-opus-4-8 | |
| GPT-5.4 | Azure AI Foundry | 2 listings
| |
| GPT-5.4 | Azure OpenAI | 6 listings
| |
| GPT-5.4 Pro | Azure AI Foundry | 2 listings
| |
| GPT-5.4 Pro | Azure OpenAI | 4 listings
| |
| GPT Image 2.5 Flare | Azure OpenAI | azure/gpt-image-2.5-flare | |
| GPT Image 2.5 Sunburst | Azure OpenAI | azure/gpt-image-2.5-sunburst | |
| GPT Live 1 | Azure OpenAI | azure/gpt-live-1 | |
| Cohere Rerank V4.0 Fast | Azure AI Foundry | azure_ai/cohere-rerank-v4.0-fast | |
| Cohere Rerank V4.0 Pro | Azure AI Foundry | azure_ai/cohere-rerank-v4.0-pro | |
| GPT OSS 120B | Azure AI Foundry | azure_ai/gpt-oss-120b | |
| Claude Opus 5.5 | Azure AI Foundry | azure_ai/claude-opus-5-5 | |
| GPT-5.4 Mini | Azure AI Foundry | 2 listings
| |
| GPT-5.4 Mini | Azure OpenAI | 4 listings
| |
| GPT-5.4 Nano | Azure AI Foundry | 2 listings
| |
| GPT-5.4 Nano | Azure OpenAI | 4 listings
| |
| Claude Haiku 5.5 | Azure AI Foundry | azure_ai/claude-haiku-5-5 | |
| Claude Sonnet 5.5 | Azure AI Foundry | azure_ai/claude-sonnet-5-5 |
By month
- May 20282 deprecations
- March 20283 deprecations
- February 20288 deprecations
- January 20284 deprecations
- December 20272 deprecations
- November 20273 deprecations
- October 20276 deprecations
- September 202718 deprecations
- August 20273 deprecations
- July 20279 deprecations
- June 202710 deprecations
- May 202717 deprecations
- April 202724 deprecations
- March 202740 deprecations
- February 202715 deprecations
- January 202735 deprecations
- December 202626 deprecations
- November 202643 deprecations
- October 202689 deprecations
- September 202623 deprecations
- August 202621 deprecations
- July 202625 deprecations
- June 202617 deprecations
- May 202610 deprecations
- April 20266 deprecations
- March 20262 deprecations
- February 202614 deprecations
- January 20263 deprecations
- December 20252 deprecations
- November 20255 deprecations
- August 202519 deprecations
- July 20253 deprecations
- June 20258 deprecations
- May 20251 deprecation
- April 20252 deprecations
- March 20252 deprecations
- January 20251 deprecation
- August 20241 deprecation
Dates come from LiteLLM’s price file and reflect provider listings, not announcement dates. History is backfilled from recorded dates; it may not include models removed before tracking began. Regional and pricing variants with the same provider and date are grouped together.