SHUTDOWNS BY MONTH

AI models shutting down in April 2027

19 models from 4 providers are scheduled to shut down or retire in April 2027, including gpt-5.1 (OpenAI, Apr 1), claude-opus-4-7@1 (Azure, Apr 6), anthropic.claude-sonnet-4-5-20250929-v1:0 (Amazon Bedrock, Apr 8).

Last updated Oct 23, 2026 · Dates are the providers' own; “no earlier than” dates are marked.

Apr 1, 20273 models

Provider · route	Models and replacements	Source
OpenAI	`gpt-5.1` → `gpt-6-sol` `gpt-5.3-codex` → `gpt-6-sol` `gpt-5.4-nano` → `gpt-6-luna`	Notice ↗

Apr 6, 20274 models

Provider · route	Models and replacements	Source
AzureMicrosoft Azure / Foundry	`claude-opus-4-7@1` `gpt-audio-mini (2025-10-06)` `grok-4-20-non-reasoning@1` `grok-4-20-reasoning@1`	Notice ↗

Apr 7, 20271 model

Provider · route	Models and replacements	Source
AzureMicrosoft Azure / Foundry	`gpt-5-pro (2025-10-06)`	Notice ↗

Apr 8, 20271 model

Provider · route	Models and replacements	Source
Amazon BedrockAmazon Bedrock	`anthropic.claude-sonnet-4-5-20250929-v1:0`	Notice ↗

Apr 14, 20277 models

Provider · route	Models and replacements	Source
AzureMicrosoft Azure / Foundry	`gpt-4.1-mini (2025-04-14)` `gpt-4.1-nano (2025-04-14)`Deadline moved from Oct 14, 2026 to Apr 14, 2027 `gpt-4.1 (2025-04-14)` `gpt-4o-mini (2024-07-18)` `gpt-4o (2024-08-06)` → `gpt-5.1` `gpt-4o (2024-11-20)` → `gpt-5.1`	Notice ↗
Snowflake Cortex	`openai-gpt-4.1`Deadline moved from Oct 14, 2026 to Apr 14, 2027	Notice ↗

Apr 15, 20271 model

Provider · route	Models and replacements	Source
AzureMicrosoft Azure / Foundry	`gpt-4o-transcribe-diarize (2025-10-15)`	Notice ↗

Apr 16, 20272 models

Provider · route	Models and replacements	Source
AzureMicrosoft Azure / Foundry	`Kimi-K2.6 (2026-04-20)` `Kimi-K2.7-Code (2026-06-12)`Deadline moved from Oct 3, 2026 to Apr 16, 2027	Notice ↗