LLM Deprecation Calendar
Every announced shutdown date across OpenAI · Anthropic · Google · AWS Bedrock · Azure Foundry · Mistral - chronological. Last verified: 2026-07-16. Updated weekly.
How to read this: every date comes from the vendor's official page (linked per row). Google marks its dates as "earliest possible" - treat them as floors. OpenAI groups some shutdowns into waves (Jul 23 / Oct 23 and Mar 26 / Sep 28) - verify your exact snapshot on their deprecations page. This calendar is maintenance, not legal advice: always confirm at the source before migrating.
July 2026
| Date | Provider | What retires | Migrate to | Src |
|---|
| Jul 21 | Anthropic | claude-mythos-preview | claude-mythos-5 | ✓ |
| Jul 22 | Anthropic | old memory-listing semantics under managed-agents-2026-04-01 header | adapt list/pagination code (see W29) | ✓ |
| Jul 23 | OpenAI | shutdown wave 1: legacy gpt-3.5-turbo, gpt-4 variants, o1, o3-mini snapshots + their fine-tunes (wave 2: Oct 23) | current GPT-5.x / o4-mini | ✓ |
| Jul 23 | Azure Foundry | gpt-realtime-mini (2025-10-06) | version 2025-12-15 | ✓ |
| Jul 24 | Anthropic | fast mode (speed:"fast") on Opus 4.7 - errors after this date | fast mode on Opus 4.8 | ✓ |
| Jul 30 | AWS Bedrock | EOL: Claude 3 Sonnet; Claude 3.5 Sonnet (20240620, select regions + GovCloud); 3.5 Sonnet v2 (AP regions); 3.7 Sonnet (GovCloud) | Sonnet 4.6 / Sonnet 5 | ✓ |
| Jul 30 | AWS Bedrock | Agents Classic closed to new customers; model catalog frozen | AgentCore | ✓ |
| Jul 31 | Mistral | Mistral Small 3.2 · Devstral 2 · Magistral Medium/Small 1.2 · Mistral Nemo 12B | Small 4 / Medium 3.5 / Ministral 3 8B | ✓ |
| Jul 31 | Azure Foundry | Stable-Diffusion-3.5-Large, Stable-Image-Core, Stable-Image-Ultra | - | ✓ |
August 2026
| Date | Provider | What retires | Migrate to | Src |
|---|
| Aug 5 | Anthropic | claude-opus-4-1-20250805 (Claude API) | claude-opus-4-8 | ✓ |
| Aug 5 | Azure Foundry | claude-opus-4-1 (preview) | claude-opus-4-8 | ✓ |
| Aug 5 / 28 | Azure Foundry | gpt-chat-latest preview snapshots (05-05 → Aug 5; 05-28 & 06-24 → Aug 28) | newer snapshot | ✓ |
| Aug 10 | OpenAI | gpt-5.2-chat-latest, gpt-5.3-chat-latest | gpt-5.5 | ✓ |
| Aug 13 | Azure Foundry | DeepSeek-R1 (Legacy) | DeepSeek-V4-Pro | ✓ |
| Aug 15 | Azure Foundry | MAI-Image-2e, MAI-Image-2 (preview) | MAI-Image-2.5(-Flash) | ✓ |
| Aug 17 | Google Gemini API | Imagen 4 family (imagen-4.0-*) + Gemini 3 image models (earliest possible date) | Nano Banana 2 / gemini-3.1-flash-lite-image | ✓ |
| Aug 17 | Azure Foundry | mistral-document-ai-2505 | 2512 / mistral-ocr-4-0 | ✓ |
| Aug 19 | AWS Bedrock | EOL: Cohere Command R, Command R+ | Cohere Command A | ✓ |
| Aug 26 | OpenAI | Assistants API - full shutdown | Responses API + Conversations API | ✓ |
| Aug 26 | AWS Bedrock | Jamba 1.5 Large/Mini enter extended access (price may rise; EOL Nov 26) | newer Jamba | ✓ |
| Aug 30 | Azure Foundry | model-router previews (2025-05-19, 2025-08-07) | model-router GA | ✓ |
| Aug 31 | Anthropic | price: Sonnet 5 intro pricing ends ($2/$10 → $3/$15 from Sep 1) | budget +50% inputs | ✓ |
| Aug 31 | Mistral | Mistral Medium 3.1, Medium 3 | Medium 3.5 | ✓ |
| Aug 31 | Azure Foundry | TimeGEN-1 (Nixtla); tsuzumi-7b (NTT) | TimeGPT; tsuzumi2 | ✓ |
September 2026
| Date | Provider | What retires | Migrate to | Src |
|---|
| Sep 10 | AWS Bedrock | EOL: Claude 3 Haiku (incl. GovCloud) | Haiku 4.5 | ✓ |
| Sep 14 | AWS Bedrock | EOL: Amazon Nova Premier, Nova Sonic | newer Nova | ✓ |
| Sep 15 | Azure Foundry | sora-2 (2025-12-08 preview) | - (see Sep 24) | ✓ |
| Sep 16 / 18 | Azure Foundry | o1 (2024-12-17); o1-pro (2025-03-19) | o3 / GPT-5.x | ✓ |
| Sep 21 | Azure Foundry | gpt-audio-mini (2025-10-06) | version 2025-12-15 | ✓ |
| Sep 24 | OpenAI | Videos API + sora-2/sora-2-pro - shutdown, no 1P successor | consider Veo 3.1 / Gemini Omni Flash | ✓ |
| Sep 28 | OpenAI | shutdown wave 2 of 2025-09-26 announcement (legacy GPT snapshots) | current GPT-5.x | ✓ |
| Sep 30 | Mistral | Leanstral 1.5 (labs-leanstral-1-5; short-cycle labs model) | - | ✓ |
| Sep 30 | AWS Bedrock | EOL: Nova Canvas, Nova Reel (v1:0, v1:1) | - | ✓ |
October 2026
| Date | Provider | What retires | Migrate to | Src |
|---|
| Oct 1 | Azure Foundry | gpt-4o (all 2024 versions); gpt-4o-mini; o3-mini | gpt-5.1 / gpt-4.1-mini / o4-mini | ✓ |
| Oct 8 | AWS Bedrock | Claude Opus 4.1: extended access starts (price may rise; EOL Jan 8, 2027) | Opus 4.8 | ✓ |
| Oct 13 | Azure Foundry | Cohere-command-a-plus-05-2026 (preview) | - | ✓ |
| Oct 14 | Azure Foundry | gpt-4.1, gpt-4.1-mini, gpt-4.1-nano | GPT-5.x | ✓ |
| Oct 14 | AWS Bedrock | EOL: Claude Sonnet 4 (all regions; extended access since Jul 14) | Sonnet 4.6 / 5 | ✓ |
| Oct 15 | Azure Foundry | gpt-4o-mini-transcribe/tts, gpt-4o-transcribe(-diarize) | versions 2025-12-15 | ✓ |
| Oct 16 | Google Gemini API | gemini-2.5-pro, gemini-2.5-flash (earliest possible date) | gemini-3.1-pro-preview / gemini-3.5-flash | ✓ |
| Oct 16 | Azure Foundry | o3, o4-mini (2025-04-16) | GPT-5.x | ✓ |
| Oct 19 | Azure Foundry | claude-haiku-4-5, claude-opus-4-5, claude-sonnet-4-5 (previews) | newer Claude on Foundry | ✓ |
| Oct 23 | OpenAI | shutdown wave 2 of 2026-04-22 announcement (legacy snapshots) | current GPT-5.x | ✓ |
| Oct 23 | Azure Foundry | gpt-image-1 (preview) | gpt-image-2 | ✓ |
| Oct 31 | OpenAI | Evals platform → read-only (full shutdown Nov 30) | - | ✓ |
November-December 2026
| Date | Provider | What retires | Migrate to | Src |
|---|
| Nov 15 | Azure Foundry | codex-mini (2025-05-16) | - | ✓ |
| Nov 26 | AWS Bedrock | EOL: Jamba 1.5 Large/Mini | - | ✓ |
| Nov 30 | OpenAI | shutdown: v1/prompts (Reusable Prompts), Evals platform, Agent Builder | prompts in app code; Agents SDK | ✓ |
| Nov 30 | AWS Bedrock | EOL: TwelveLabs Marengo Embed v2.7 | - | ✓ |
| Dec 1 | OpenAI | gpt-image-1-mini, gpt-image-1.5, chatgpt-image-latest | gpt-image-2 | ✓ |
| Dec 5-26 | Azure Foundry | gpt-5.1-codex-max (Dec 5); o3-pro (Dec 10); gpt-5.2 (Dec 12); tts/tts-hd/whisper + several -2025-12-15 versions (Dec 15); gpt-image-1.5 (Dec 16); o3-deep-research (Dec 26) | newer versions | ✓ |
| Dec 11 | OpenAI | snapshots: gpt-5 / gpt-5-mini / gpt-5-nano (2025-08-07), gpt-5-pro (2025-10-06), o3 (2025-04-16), o3-pro (2025-06-10) | gpt-5.5, gpt-5.4-mini/nano, gpt-5.5-pro | ✓ |
2027 (announced so far)
| Date | Provider | What retires | Migrate to | Src |
|---|
| Jan 6 | OpenAI | fine-tuning: no new jobs accepted (final stage of 2026-05-07 wind-down) | prompt engineering / distillation / other providers | ✓ |
| Jan 8 | AWS Bedrock | EOL: Claude Opus 4.1 | Opus 4.8 | ✓ |
| Feb 6 | Azure Foundry | gpt-5, gpt-5-mini, gpt-5-nano (2025-08-07) | GPT-5.x | ✓ |
| Feb 23 - Mar 18 | Azure Foundry | gpt-realtime-1.5 & gpt-audio-1.5; gpt-5.3-codex; gpt-audio/gpt-realtime; gpt-5.4(-pro); gpt-5-codex; gpt-5.4-mini/nano | newer versions | ✓ |
| Apr 7 - 23 | Azure Foundry | gpt-5-pro, gpt-image-1-mini; text-embedding-3-large/small, ada-002; gpt-image-2; gpt-5.5 | newer versions | ✓ |
| May 6 / 15 | Azure Foundry | gpt-realtime-2; gpt-5.1 + gpt-5.1-codex(-mini) | newer versions | ✓ |
| May 7 | Google Gemini API | gemini-3.1-flash-lite-preview | gemini-3.1-flash-lite | ✓ |
| Jun 25 / Jul 9 | Azure Foundry | gpt-realtime-2.1(+mini); gpt-5.6-sol/terra/luna | newer versions | ✓ |
| Oct 1-16 | Azure Foundry | fine-tuned deployments: gpt-4o(-mini); gpt-4.1 family; o4-mini | newer FT targets | ✓ |
Anthropic "not sooner than" floors
Anthropic commits models won't retire before these dates (these are floors, not scheduled shutdowns):
| Model | Retirement not before |
|---|
claude-sonnet-4-5-20250929 | 2026-09-29 |
claude-haiku-4-5-20251001 | 2026-10-15 |
claude-opus-4-5-20251101 | 2026-11-24 |
claude-opus-4-6 | 2027-02-05 |
claude-sonnet-4-6 | 2027-02-17 |
claude-opus-4-7 | 2027-04-16 |
claude-opus-4-8 | 2027-05-28 |
claude-fable-5 | 2027-06-09 |
claude-sonnet-5 | 2027-06-30 |
Also active without a shutdown date: non-default temperature/top_p/top_k return 400 on Opus 4.7+, Opus 4.8 and Sonnet 5. Known gap: Google Vertex AI publishes no model-retirement table for partner models - Vertex-specific dates are unverified here; Gemini API dates above come from ai.google.dev.