Each AI model retirement date as each vendor publishes it, quoted from a kept copy of its page.https://jesseahawkins.com/frontier/retirements/en-ushttps://jesseahawkins.com/frontier/retirements/#r-azure-claude-fable-5-1-1retire:azure:claude-fable-5-1@1:2027-12-05Microsoft’s page: “claude-fable-5-1 | 1 | Preview | 2027-12-05 | —”. https://learn.microsoft.com/en-us/azure/foundry/openai/concepts/model-retirement-scheduleMon, 26 Oct 2026 00:00:00 GMThttps://jesseahawkins.com/frontier/retirements/#r-azure-claude-fable-5-1retire:azure:claude-fable-5@1:2027-12-05Microsoft’s page: “claude-fable-5 | 1 | Preview | 2027-12-05 | —”. https://learn.microsoft.com/en-us/azure/foundry/openai/concepts/model-retirement-scheduleMon, 26 Oct 2026 00:00:00 GMThttps://jesseahawkins.com/frontier/retirements/#r-azure-claude-haiku-4-5-1retire:azure:claude-haiku-4-5@1:2026-11-15Microsoft’s page: “claude-haiku-4-5 | 1 | GA | 2026-11-15 | —”. https://learn.microsoft.com/en-us/azure/foundry/openai/concepts/model-retirement-scheduleMon, 26 Oct 2026 00:00:00 GMThttps://jesseahawkins.com/frontier/retirements/#r-azure-claude-haiku-4-5-2retire:azure:claude-haiku-4-5@2:2026-11-15Microsoft’s page: “claude-haiku-4-5 | 2 | GA | 2026-11-15 | —”. https://learn.microsoft.com/en-us/azure/foundry/openai/concepts/model-retirement-scheduleMon, 26 Oct 2026 00:00:00 GMThttps://jesseahawkins.com/frontier/retirements/#r-azure-claude-mythos-5-1-1retire:azure:claude-mythos-5-1@1:2027-09-01Microsoft’s page: “claude-mythos-5-1 | 1 | Preview | 2027-09-01 | —”. https://learn.microsoft.com/en-us/azure/foundry/openai/concepts/model-retirement-scheduleMon, 26 Oct 2026 00:00:00 GMThttps://jesseahawkins.com/frontier/retirements/#r-azure-claude-opus-4-1retire:azure:claude-opus-4-1:2026-08-05Microsoft’s page: “claude-opus-4-1 | — | Retired | 2026-08-05 | claude-opus-5”. https://learn.microsoft.com/en-us/azure/foundry/openai/concepts/model-retirement-scheduleMon, 26 Oct 2026 00:00:00 GMThttps://jesseahawkins.com/frontier/retirements/#r-azure-claude-opus-4-5-1retire:azure:claude-opus-4-5@1:2026-11-24Microsoft’s page: “claude-opus-4-5 | 1 | GA | 2026-11-24 | —”. https://learn.microsoft.com/en-us/azure/foundry/openai/concepts/model-retirement-scheduleMon, 26 Oct 2026 00:00:00 GMThttps://jesseahawkins.com/frontier/retirements/#r-azure-claude-opus-4-6-1retire:azure:claude-opus-4-6@1:2027-02-02Microsoft’s page: “claude-opus-4-6 | 1 | GA | 2027-02-02 | —”. https://learn.microsoft.com/en-us/azure/foundry/openai/concepts/model-retirement-scheduleMon, 26 Oct 2026 00:00:00 GMThttps://jesseahawkins.com/frontier/retirements/#r-azure-claude-opus-4-7-1retire:azure:claude-opus-4-7@1:2027-04-06Microsoft’s page: “claude-opus-4-7 | 1 | GA | 2027-04-06 | —”. https://learn.microsoft.com/en-us/azure/foundry/openai/concepts/model-retirement-scheduleMon, 26 Oct 2026 00:00:00 GMThttps://jesseahawkins.com/frontier/retirements/#r-azure-claude-opus-4-8-1retire:azure:claude-opus-4-8@1:2027-09-01Microsoft’s page: “claude-opus-4-8 | 1 | GA | 2027-09-01 | —”. https://learn.microsoft.com/en-us/azure/foundry/openai/concepts/model-retirement-scheduleMon, 26 Oct 2026 00:00:00 GMThttps://jesseahawkins.com/frontier/retirements/#r-azure-claude-opus-4-8-2retire:azure:claude-opus-4-8@2:2027-09-01Microsoft’s page: “claude-opus-4-8 | 2 | GA | 2027-09-01 | —”. https://learn.microsoft.com/en-us/azure/foundry/openai/concepts/model-retirement-scheduleMon, 26 Oct 2026 00:00:00 GMThttps://jesseahawkins.com/frontier/retirements/#r-azure-claude-opus-5-5-fast-2retire:azure:claude-opus-5-5-fast@2:2027-01-15Microsoft’s page: “claude-opus-5-5-fast | 2 | GA | 2027-01-15 | —”. https://learn.microsoft.com/en-us/azure/foundry/openai/concepts/model-retirement-scheduleMon, 26 Oct 2026 00:00:00 GMThttps://jesseahawkins.com/frontier/retirements/#r-azure-claude-opus-5-1retire:azure:claude-opus-5@1:2027-07-08Microsoft’s page: “claude-opus-5 | 1 | GA | 2027-07-08 | —”. https://learn.microsoft.com/en-us/azure/foundry/openai/concepts/model-retirement-scheduleMon, 26 Oct 2026 00:00:00 GMThttps://jesseahawkins.com/frontier/retirements/#r-azure-claude-opus-5-2retire:azure:claude-opus-5@2:2027-07-08Microsoft’s page: “claude-opus-5 | 2 | GA | 2027-07-08 | —”. https://learn.microsoft.com/en-us/azure/foundry/openai/concepts/model-retirement-scheduleMon, 26 Oct 2026 00:00:00 GMThttps://jesseahawkins.com/frontier/retirements/#r-azure-claude-sonnet-4-5-1retire:azure:claude-sonnet-4-5@1:2026-11-30Microsoft’s page: “claude-sonnet-4-5 | 1 | GA | 2026-11-30 | claude-sonnet-5-5”. https://learn.microsoft.com/en-us/azure/foundry/openai/concepts/model-retirement-scheduleMon, 26 Oct 2026 00:00:00 GMThttps://jesseahawkins.com/frontier/retirements/#r-azure-claude-sonnet-4-6-1retire:azure:claude-sonnet-4-6@1:2027-02-10Microsoft’s page: “claude-sonnet-4-6 | 1 | GA | 2027-02-10 | —”. https://learn.microsoft.com/en-us/azure/foundry/openai/concepts/model-retirement-scheduleMon, 26 Oct 2026 00:00:00 GMThttps://jesseahawkins.com/frontier/retirements/#r-azure-claude-sonnet-5-1retire:azure:claude-sonnet-5@1:2027-06-30Microsoft’s page: “claude-sonnet-5 | 1 | GA | 2027-06-30 | —”. https://learn.microsoft.com/en-us/azure/foundry/openai/concepts/model-retirement-scheduleMon, 26 Oct 2026 00:00:00 GMThttps://jesseahawkins.com/frontier/retirements/#r-azure-claude-sonnet-5-2retire:azure:claude-sonnet-5@2:2027-06-30Microsoft’s page: “claude-sonnet-5 | 2 | GA | 2027-06-30 | —”. https://learn.microsoft.com/en-us/azure/foundry/openai/concepts/model-retirement-scheduleMon, 26 Oct 2026 00:00:00 GMThttps://jesseahawkins.com/frontier/retirements/#r-azure-codestral-2501-2retire:azure:Codestral-2501@2:2027-02-15Microsoft’s page: “Codestral-2501 | 2 | GA | 2027-02-15 | —”. https://learn.microsoft.com/en-us/azure/foundry/openai/concepts/model-retirement-scheduleMon, 26 Oct 2026 00:00:00 GMThttps://jesseahawkins.com/frontier/retirements/#r-azure-codex-mini-2025-05-16retire:azure:codex-mini@2025-05-16:2026-11-15Microsoft’s page: “codex-mini | 2025-05-16 | Deprecated | 2026-11-15 | —”. https://learn.microsoft.com/en-us/azure/foundry/openai/concepts/model-retirement-scheduleMon, 26 Oct 2026 00:00:00 GMThttps://jesseahawkins.com/frontier/retirements/#r-azure-cohere-command-a-plus-05-2026-1retire:azure:Cohere-command-a-plus-05-2026@1:2026-10-16Microsoft’s page: “Cohere-command-a-plus-05-2026 | 1 | Preview | 2026-10-16 | coherelabs-command-a-plus-05-2026-fp81, coherelabs-command-a-plus-05-2026-bf161, coherelabs-command-a-plus-05-2026-w4a41”. https://learn.microsoft.com/en-us/azure/foundry/openai/concepts/model-retirement-scheduleMon, 26 Oct 2026 00:00:00 GMThttps://jesseahawkins.com/frontier/retirements/#r-azure-cohere-command-a-1retire:azure:cohere-command-a@1:2027-02-15Microsoft’s page: “cohere-command-a | 1 | GA | 2027-02-15 | coherelabs-command-a-plus-05-2026-fp81, coherelabs-command-a-plus-05-2026-bf161, coherelabs-command-a-plus-05-2026-w4a41”. https://learn.microsoft.com/en-us/azure/foundry/openai/concepts/model-retirement-scheduleMon, 26 Oct 2026 00:00:00 GMThttps://jesseahawkins.com/frontier/retirements/#r-azure-cohere-command-r-08-2024-1retire:azure:Cohere-command-r-08-2024@1:2026-05-12Microsoft’s page: “Cohere-command-r-08-2024 | 1 | Retired | 2026-05-12 | —”. https://learn.microsoft.com/en-us/azure/foundry/openai/concepts/model-retirement-scheduleMon, 26 Oct 2026 00:00:00 GMThttps://jesseahawkins.com/frontier/retirements/#r-azure-cohere-command-r-plus-08-2024-1retire:azure:Cohere-command-r-plus-08-2024@1:2026-05-12Microsoft’s page: “Cohere-command-r-plus-08-2024 | 1 | Retired | 2026-05-12 | —”. https://learn.microsoft.com/en-us/azure/foundry/openai/concepts/model-retirement-scheduleMon, 26 Oct 2026 00:00:00 GMThttps://jesseahawkins.com/frontier/retirements/#r-azure-cohere-embed-v3-english-1retire:azure:Cohere-embed-v3-english@1:2027-02-15Microsoft’s page: “Cohere-embed-v3-english | 1 | GA | 2027-02-15 | Cohere-embed-v5-fast, Cohere-embed-v5-pro”. https://learn.microsoft.com/en-us/azure/foundry/openai/concepts/model-retirement-scheduleMon, 26 Oct 2026 00:00:00 GMThttps://jesseahawkins.com/frontier/retirements/#r-azure-cohere-embed-v3-multilingual-1retire:azure:Cohere-embed-v3-multilingual@1:2027-02-15Microsoft’s page: “Cohere-embed-v3-multilingual | 1 | GA | 2027-02-15 | Cohere-embed-v5-fast, Cohere-embed-v5-pro”. https://learn.microsoft.com/en-us/azure/foundry/openai/concepts/model-retirement-scheduleMon, 26 Oct 2026 00:00:00 GMThttps://jesseahawkins.com/frontier/retirements/#r-azure-cohere-parse-v5-1retire:azure:Cohere-parse-v5@1:2026-12-15Microsoft’s page: “Cohere-parse-v5 | 1 | Preview | 2026-12-15 | —”. https://learn.microsoft.com/en-us/azure/foundry/openai/concepts/model-retirement-scheduleMon, 26 Oct 2026 00:00:00 GMThttps://jesseahawkins.com/frontier/retirements/#r-azure-cohere-rerank-v3-5-1retire:azure:Cohere-rerank-v3.5@1:2026-05-14Microsoft’s page: “Cohere-rerank-v3.5 | 1 | Retired | 2026-05-14 | Cohere-rerank-v4.0-pro, Cohere-rerank-v4.0-fast”. https://learn.microsoft.com/en-us/azure/foundry/openai/concepts/model-retirement-scheduleMon, 26 Oct 2026 00:00:00 GMThttps://jesseahawkins.com/frontier/retirements/#r-azure-cohere-rerank-v4-0-fast-1retire:azure:Cohere-rerank-v4.0-fast@1:2027-09-13Microsoft’s page: “Cohere-rerank-v4.0-fast | 1 | GA | 2027-09-13 | Cohere-rerank-v5-fast”. https://learn.microsoft.com/en-us/azure/foundry/openai/concepts/model-retirement-scheduleMon, 26 Oct 2026 00:00:00 GMThttps://jesseahawkins.com/frontier/retirements/#r-azure-cohere-rerank-v4-0-pro-1retire:azure:Cohere-rerank-v4.0-pro@1:2027-09-13Microsoft’s page: “Cohere-rerank-v4.0-pro | 1 | GA | 2027-09-13 | Cohere-rerank-v5-pro”. https://learn.microsoft.com/en-us/azure/foundry/openai/concepts/model-retirement-scheduleMon, 26 Oct 2026 00:00:00 GMThttps://jesseahawkins.com/frontier/retirements/#r-azure-deepseek-r1-0528-1retire:azure:DeepSeek-R1-0528@1:2026-07-13Microsoft’s page: “DeepSeek-R1-0528 | 1 | Retired | 2026-07-13 | DeepSeek-V4-Pro”. https://learn.microsoft.com/en-us/azure/foundry/openai/concepts/model-retirement-scheduleMon, 26 Oct 2026 00:00:00 GMThttps://jesseahawkins.com/frontier/retirements/#r-azure-deepseek-r1-1retire:azure:DeepSeek-R1@1:2026-08-13Microsoft’s page: “DeepSeek-R1 | 1 | Retired | 2026-08-13 | DeepSeek-V4-Pro”. https://learn.microsoft.com/en-us/azure/foundry/openai/concepts/model-retirement-scheduleMon, 26 Oct 2026 00:00:00 GMThttps://jesseahawkins.com/frontier/retirements/#r-azure-deepseek-v3-0324-1retire:azure:DeepSeek-V3-0324@1:2026-07-13Microsoft’s page: “DeepSeek-V3-0324 | 1 | Retired | 2026-07-13 | DeepSeek-V4-Flash”. https://learn.microsoft.com/en-us/azure/foundry/openai/concepts/model-retirement-scheduleMon, 26 Oct 2026 00:00:00 GMThttps://jesseahawkins.com/frontier/retirements/#r-azure-deepseek-v3-1-1retire:azure:DeepSeek-V3.1@1:2026-07-13Microsoft’s page: “DeepSeek-V3.1 | 1 | Retired | 2026-07-13 | DeepSeek-V4-Flash”. https://learn.microsoft.com/en-us/azure/foundry/openai/concepts/model-retirement-scheduleMon, 26 Oct 2026 00:00:00 GMThttps://jesseahawkins.com/frontier/retirements/#r-azure-deepseek-v3-2-speciale-1retire:azure:DeepSeek-V3.2-Speciale@1:2027-11-01Microsoft’s page: “DeepSeek-V3.2-Speciale | 1 | GA | 2027-11-01 | DeepSeek-V4-Pro”. https://learn.microsoft.com/en-us/azure/foundry/openai/concepts/model-retirement-scheduleMon, 26 Oct 2026 00:00:00 GMThttps://jesseahawkins.com/frontier/retirements/#r-azure-deepseek-v3-2-1retire:azure:DeepSeek-V3.2@1:2027-11-01Microsoft’s page: “DeepSeek-V3.2 | 1 | GA | 2027-11-01 | DeepSeek-V4.1-Flash”. https://learn.microsoft.com/en-us/azure/foundry/openai/concepts/model-retirement-scheduleMon, 26 Oct 2026 00:00:00 GMThttps://jesseahawkins.com/frontier/retirements/#r-azure-deepseek-v4-flash-0731-2026-07-31retire:azure:DeepSeek-V4-Flash-0731@2026-07-31:2026-12-03Microsoft’s page: “DeepSeek-V4-Flash-0731 | 2026-07-31 | Preview | 2026-12-03 | —”. https://learn.microsoft.com/en-us/azure/foundry/openai/concepts/model-retirement-scheduleMon, 26 Oct 2026 00:00:00 GMThttps://jesseahawkins.com/frontier/retirements/#r-azure-deepseek-v4-flash-2026-04-23retire:azure:DeepSeek-V4-Flash@2026-04-23:2028-02-20Microsoft’s page: “DeepSeek-V4-Flash | 2026-04-23 | GA | 2028-02-20 | DeepSeek-V4-Flash-0731”. https://learn.microsoft.com/en-us/azure/foundry/openai/concepts/model-retirement-scheduleMon, 26 Oct 2026 00:00:00 GMThttps://jesseahawkins.com/frontier/retirements/#r-azure-deepseek-v4-pro-2026-04-23retire:azure:DeepSeek-V4-Pro@2026-04-23:2028-02-20Microsoft’s page: “DeepSeek-V4-Pro | 2026-04-23 | GA | 2028-02-20 | —”. https://learn.microsoft.com/en-us/azure/foundry/openai/concepts/model-retirement-scheduleMon, 26 Oct 2026 00:00:00 GMThttps://jesseahawkins.com/frontier/retirements/#r-azure-embed-v-4-0-1retire:azure:embed-v-4-0@1:2027-06-01Microsoft’s page: “embed-v-4-0 | 1 | GA | 2027-06-01 | Coher-embed-v5-fast, Cohere-embed-v5-pro”. https://learn.microsoft.com/en-us/azure/foundry/openai/concepts/model-retirement-scheduleMon, 26 Oct 2026 00:00:00 GMThttps://jesseahawkins.com/frontier/retirements/#r-azure-flux-1-1-pro-1retire:azure:FLUX-1.1-pro@1:2027-01-05Microsoft’s page: “FLUX-1.1-pro | 1 | GA | 2027-01-05 | —”. https://learn.microsoft.com/en-us/azure/foundry/openai/concepts/model-retirement-scheduleMon, 26 Oct 2026 00:00:00 GMThttps://jesseahawkins.com/frontier/retirements/#r-azure-flux-1-kontext-pro-1retire:azure:FLUX.1-Kontext-pro@1:2027-01-05Microsoft’s page: “FLUX.1-Kontext-pro | 1 | GA | 2027-01-05 | —”. https://learn.microsoft.com/en-us/azure/foundry/openai/concepts/model-retirement-scheduleMon, 26 Oct 2026 00:00:00 GMThttps://jesseahawkins.com/frontier/retirements/#r-azure-flux-2-flex-1retire:azure:FLUX.2-flex@1:2027-01-20Microsoft’s page: “FLUX.2-flex | 1 | GA | 2027-01-20 | —”. https://learn.microsoft.com/en-us/azure/foundry/openai/concepts/model-retirement-scheduleMon, 26 Oct 2026 00:00:00 GMThttps://jesseahawkins.com/frontier/retirements/#r-azure-flux-2-pro-1retire:azure:FLUX.2-pro@1:2027-01-20Microsoft’s page: “FLUX.2-pro | 1 | GA | 2027-01-20 | —”. https://learn.microsoft.com/en-us/azure/foundry/openai/concepts/model-retirement-scheduleMon, 26 Oct 2026 00:00:00 GMThttps://jesseahawkins.com/frontier/retirements/#r-azure-gpt-4-1-mini-2025-04-14retire:azure:gpt-4.1-mini@2025-04-14:2027-04-14Microsoft’s page: “gpt-4.1-mini | 2025-04-14 | Deprecated | 2027-04-14 | —”. https://learn.microsoft.com/en-us/azure/foundry/openai/concepts/model-retirement-scheduleMon, 26 Oct 2026 00:00:00 GMThttps://jesseahawkins.com/frontier/retirements/#r-azure-gpt-4-1-nano-2025-04-14retire:azure:gpt-4.1-nano@2025-04-14:2027-04-14Microsoft’s page: “gpt-4.1-nano | 2025-04-14 | Deprecated | 2027-04-14 | —”. https://learn.microsoft.com/en-us/azure/foundry/openai/concepts/model-retirement-scheduleMon, 26 Oct 2026 00:00:00 GMThttps://jesseahawkins.com/frontier/retirements/#r-azure-gpt-4-1-2025-04-14retire:azure:gpt-4.1@2025-04-14:2027-04-14Microsoft’s page: “gpt-4.1 | 2025-04-14 | Deprecated | 2027-04-14 | —”. https://learn.microsoft.com/en-us/azure/foundry/openai/concepts/model-retirement-scheduleMon, 26 Oct 2026 00:00:00 GMThttps://jesseahawkins.com/frontier/retirements/#r-azure-gpt-4o-mini-transcribe-2025-03-20retire:azure:gpt-4o-mini-transcribe@2025-03-20:2026-10-15Microsoft’s page: “gpt-4o-mini-transcribe | 2025-03-20 | GA | 2026-10-15 | —”. https://learn.microsoft.com/en-us/azure/foundry/openai/concepts/model-retirement-scheduleMon, 26 Oct 2026 00:00:00 GMThttps://jesseahawkins.com/frontier/retirements/#r-azure-gpt-4o-mini-transcribe-2025-12-15retire:azure:gpt-4o-mini-transcribe@2025-12-15:2027-06-15Microsoft’s page: “gpt-4o-mini-transcribe | 2025-12-15 | GA | 2027-06-15 | —”. https://learn.microsoft.com/en-us/azure/foundry/openai/concepts/model-retirement-scheduleMon, 26 Oct 2026 00:00:00 GMThttps://jesseahawkins.com/frontier/retirements/#r-azure-gpt-4o-mini-tts-2025-03-20retire:azure:gpt-4o-mini-tts@2025-03-20:2026-10-15Microsoft’s page: “gpt-4o-mini-tts | 2025-03-20 | Preview | 2026-10-15 | —”. https://learn.microsoft.com/en-us/azure/foundry/openai/concepts/model-retirement-scheduleMon, 26 Oct 2026 00:00:00 GMThttps://jesseahawkins.com/frontier/retirements/#r-azure-gpt-4o-mini-tts-2025-12-15retire:azure:gpt-4o-mini-tts@2025-12-15:2027-06-15Microsoft’s page: “gpt-4o-mini-tts | 2025-12-15 | GA | 2027-06-15 | —”. https://learn.microsoft.com/en-us/azure/foundry/openai/concepts/model-retirement-scheduleMon, 26 Oct 2026 00:00:00 GMThttps://jesseahawkins.com/frontier/retirements/#r-azure-gpt-4o-mini-2024-07-18retire:azure:gpt-4o-mini@2024-07-18:2027-04-14Microsoft’s page: “gpt-4o-mini | 2024-07-18 | Deprecated | 2027-04-14 | —”. https://learn.microsoft.com/en-us/azure/foundry/openai/concepts/model-retirement-scheduleMon, 26 Oct 2026 00:00:00 GMThttps://jesseahawkins.com/frontier/retirements/#r-azure-gpt-4o-transcribe-diarize-2025-10-15retire:azure:gpt-4o-transcribe-diarize@2025-10-15:2027-04-15Microsoft’s page: “gpt-4o-transcribe-diarize | 2025-10-15 | GA | 2027-04-15 | —”. https://learn.microsoft.com/en-us/azure/foundry/openai/concepts/model-retirement-scheduleMon, 26 Oct 2026 00:00:00 GMThttps://jesseahawkins.com/frontier/retirements/#r-azure-gpt-4o-transcribe-2025-03-20retire:azure:gpt-4o-transcribe@2025-03-20:2026-10-15Microsoft’s page: “gpt-4o-transcribe | 2025-03-20 | GA | 2026-10-15 | —”. https://learn.microsoft.com/en-us/azure/foundry/openai/concepts/model-retirement-scheduleMon, 26 Oct 2026 00:00:00 GMThttps://jesseahawkins.com/frontier/retirements/#r-azure-gpt-4o-2024-05-13retire:azure:gpt-4o@2024-05-13:2026-12-09Microsoft’s page: “gpt-4o | 2024-05-13 | Deprecated | 2026-12-09 | gpt-5.6-sol”. https://learn.microsoft.com/en-us/azure/foundry/openai/concepts/model-retirement-scheduleMon, 26 Oct 2026 00:00:00 GMThttps://jesseahawkins.com/frontier/retirements/#r-azure-gpt-4o-2024-08-06retire:azure:gpt-4o@2024-08-06:2027-04-14Microsoft’s page: “gpt-4o | 2024-08-06 | Deprecated | 2027-04-14 | gpt-5.1”. https://learn.microsoft.com/en-us/azure/foundry/openai/concepts/model-retirement-scheduleMon, 26 Oct 2026 00:00:00 GMThttps://jesseahawkins.com/frontier/retirements/#r-azure-gpt-4o-2024-11-20retire:azure:gpt-4o@2024-11-20:2027-04-14Microsoft’s page: “gpt-4o | 2024-11-20 | Legacy | 2027-04-14 | gpt-5.1”. https://learn.microsoft.com/en-us/azure/foundry/openai/concepts/model-retirement-scheduleMon, 26 Oct 2026 00:00:00 GMThttps://jesseahawkins.com/frontier/retirements/#r-azure-gpt-5-chat-2025-08-07retire:azure:gpt-5-chat@2025-08-07:2026-06-29Microsoft’s page: “gpt-5-chat | 2025-08-07 | Retired | 2026-06-29 | gpt-chat-latest”. https://learn.microsoft.com/en-us/azure/foundry/openai/concepts/model-retirement-scheduleMon, 26 Oct 2026 00:00:00 GMThttps://jesseahawkins.com/frontier/retirements/#r-azure-gpt-5-chat-2025-10-03retire:azure:gpt-5-chat@2025-10-03:2026-05-13Microsoft’s page: “gpt-5-chat | 2025-10-03 | Retired | 2026-05-13 | gpt-chat-latest”. https://learn.microsoft.com/en-us/azure/foundry/openai/concepts/model-retirement-scheduleMon, 26 Oct 2026 00:00:00 GMThttps://jesseahawkins.com/frontier/retirements/#r-azure-gpt-5-codex-2025-09-15retire:azure:gpt-5-codex@2025-09-15:2027-03-17Microsoft’s page: “gpt-5-codex | 2025-09-15 | GA | 2027-03-17 | —”. https://learn.microsoft.com/en-us/azure/foundry/openai/concepts/model-retirement-scheduleMon, 26 Oct 2026 00:00:00 GMThttps://jesseahawkins.com/frontier/retirements/#r-azure-gpt-5-mini-2025-08-07retire:azure:gpt-5-mini@2025-08-07:2027-02-09Microsoft’s page: “gpt-5-mini | 2025-08-07 | GA | 2027-02-09 | —”. https://learn.microsoft.com/en-us/azure/foundry/openai/concepts/model-retirement-scheduleMon, 26 Oct 2026 00:00:00 GMThttps://jesseahawkins.com/frontier/retirements/#r-azure-gpt-5-nano-2025-08-07retire:azure:gpt-5-nano@2025-08-07:2027-02-09Microsoft’s page: “gpt-5-nano | 2025-08-07 | GA | 2027-02-09 | —”. https://learn.microsoft.com/en-us/azure/foundry/openai/concepts/model-retirement-scheduleMon, 26 Oct 2026 00:00:00 GMThttps://jesseahawkins.com/frontier/retirements/#r-azure-gpt-5-pro-2025-10-06retire:azure:gpt-5-pro@2025-10-06:2027-04-07Microsoft’s page: “gpt-5-pro | 2025-10-06 | GA | 2027-04-07 | —”. https://learn.microsoft.com/en-us/azure/foundry/openai/concepts/model-retirement-scheduleMon, 26 Oct 2026 00:00:00 GMThttps://jesseahawkins.com/frontier/retirements/#r-azure-gpt-5-1-chat-2025-11-13retire:azure:gpt-5.1-chat@2025-11-13:2026-06-29Microsoft’s page: “gpt-5.1-chat | 2025-11-13 | Retired | 2026-06-29 | gpt-chat-latest”. https://learn.microsoft.com/en-us/azure/foundry/openai/concepts/model-retirement-scheduleMon, 26 Oct 2026 00:00:00 GMThttps://jesseahawkins.com/frontier/retirements/#r-azure-gpt-5-1-codex-max-2025-12-04retire:azure:gpt-5.1-codex-max@2025-12-04:2027-05-18Microsoft’s page: “gpt-5.1-codex-max | 2025-12-04 | GA | 2027-05-18 | —”. https://learn.microsoft.com/en-us/azure/foundry/openai/concepts/model-retirement-scheduleMon, 26 Oct 2026 00:00:00 GMThttps://jesseahawkins.com/frontier/retirements/#r-azure-gpt-5-1-codex-mini-2025-11-13retire:azure:gpt-5.1-codex-mini@2025-11-13:2027-05-15Microsoft’s page: “gpt-5.1-codex-mini | 2025-11-13 | GA | 2027-05-15 | —”. https://learn.microsoft.com/en-us/azure/foundry/openai/concepts/model-retirement-scheduleMon, 26 Oct 2026 00:00:00 GMThttps://jesseahawkins.com/frontier/retirements/#r-azure-gpt-5-1-codex-2025-11-13retire:azure:gpt-5.1-codex@2025-11-13:2027-05-15Microsoft’s page: “gpt-5.1-codex | 2025-11-13 | GA | 2027-05-15 | —”. https://learn.microsoft.com/en-us/azure/foundry/openai/concepts/model-retirement-scheduleMon, 26 Oct 2026 00:00:00 GMThttps://jesseahawkins.com/frontier/retirements/#r-azure-gpt-5-1-2025-11-13retire:azure:gpt-5.1@2025-11-13:2027-05-15Microsoft’s page: “gpt-5.1 | 2025-11-13 | GA | 2027-05-15 | —”. https://learn.microsoft.com/en-us/azure/foundry/openai/concepts/model-retirement-scheduleMon, 26 Oct 2026 00:00:00 GMThttps://jesseahawkins.com/frontier/retirements/#r-azure-gpt-5-2-chat-2025-12-11retire:azure:gpt-5.2-chat@2025-12-11:2026-05-13Microsoft’s page: “gpt-5.2-chat | 2025-12-11 | Retired | 2026-05-13 | gpt-chat-latest”. https://learn.microsoft.com/en-us/azure/foundry/openai/concepts/model-retirement-scheduleMon, 26 Oct 2026 00:00:00 GMThttps://jesseahawkins.com/frontier/retirements/#r-azure-gpt-5-2-chat-2026-02-10retire:azure:gpt-5.2-chat@2026-02-10:2026-06-29Microsoft’s page: “gpt-5.2-chat | 2026-02-10 | Retired | 2026-06-29 | gpt-chat-latest”. https://learn.microsoft.com/en-us/azure/foundry/openai/concepts/model-retirement-scheduleMon, 26 Oct 2026 00:00:00 GMThttps://jesseahawkins.com/frontier/retirements/#r-azure-gpt-5-2-codex-2026-01-14retire:azure:gpt-5.2-codex@2026-01-14:2027-07-13Microsoft’s page: “gpt-5.2-codex | 2026-01-14 | GA | 2027-07-13 | —”. https://learn.microsoft.com/en-us/azure/foundry/openai/concepts/model-retirement-scheduleMon, 26 Oct 2026 00:00:00 GMThttps://jesseahawkins.com/frontier/retirements/#r-azure-gpt-5-2-2025-12-11retire:azure:gpt-5.2@2025-12-11:2027-06-08Microsoft’s page: “gpt-5.2 | 2025-12-11 | GA | 2027-06-08 | —”. https://learn.microsoft.com/en-us/azure/foundry/openai/concepts/model-retirement-scheduleMon, 26 Oct 2026 00:00:00 GMThttps://jesseahawkins.com/frontier/retirements/#r-azure-gpt-5-3-chat-2026-03-03retire:azure:gpt-5.3-chat@2026-03-03:2026-06-29Microsoft’s page: “gpt-5.3-chat | 2026-03-03 | Retired | 2026-06-29 | gpt-chat-latest”. https://learn.microsoft.com/en-us/azure/foundry/openai/concepts/model-retirement-scheduleMon, 26 Oct 2026 00:00:00 GMThttps://jesseahawkins.com/frontier/retirements/#r-azure-gpt-5-3-codex-2026-02-24retire:azure:gpt-5.3-codex@2026-02-24:2027-08-24Microsoft’s page: “gpt-5.3-codex | 2026-02-24 | GA | 2027-08-24 | —”. https://learn.microsoft.com/en-us/azure/foundry/openai/concepts/model-retirement-scheduleMon, 26 Oct 2026 00:00:00 GMThttps://jesseahawkins.com/frontier/retirements/#r-azure-gpt-5-4-mini-2026-03-17retire:azure:gpt-5.4-mini@2026-03-17:2027-09-21Microsoft’s page: “gpt-5.4-mini | 2026-03-17 | GA | 2027-09-21 | —”. https://learn.microsoft.com/en-us/azure/foundry/openai/concepts/model-retirement-scheduleMon, 26 Oct 2026 00:00:00 GMThttps://jesseahawkins.com/frontier/retirements/#r-azure-gpt-5-4-nano-2026-03-17retire:azure:gpt-5.4-nano@2026-03-17:2027-09-21Microsoft’s page: “gpt-5.4-nano | 2026-03-17 | GA | 2027-09-21 | —”. https://learn.microsoft.com/en-us/azure/foundry/openai/concepts/model-retirement-scheduleMon, 26 Oct 2026 00:00:00 GMThttps://jesseahawkins.com/frontier/retirements/#r-azure-gpt-5-4-pro-2026-03-05retire:azure:gpt-5.4-pro@2026-03-05:2027-09-07Microsoft’s page: “gpt-5.4-pro | 2026-03-05 | GA | 2027-09-07 | —”. https://learn.microsoft.com/en-us/azure/foundry/openai/concepts/model-retirement-scheduleMon, 26 Oct 2026 00:00:00 GMThttps://jesseahawkins.com/frontier/retirements/#r-azure-gpt-5-4-2026-03-05retire:azure:gpt-5.4@2026-03-05:2027-09-02Microsoft’s page: “gpt-5.4 | 2026-03-05 | GA | 2027-09-02 | —”. https://learn.microsoft.com/en-us/azure/foundry/openai/concepts/model-retirement-scheduleMon, 26 Oct 2026 00:00:00 GMThttps://jesseahawkins.com/frontier/retirements/#r-azure-gpt-5-5-2026-04-24retire:azure:gpt-5.5@2026-04-24:2027-10-26Microsoft’s page: “gpt-5.5 | 2026-04-24 | GA | 2027-10-26 | —”. https://learn.microsoft.com/en-us/azure/foundry/openai/concepts/model-retirement-scheduleMon, 26 Oct 2026 00:00:00 GMThttps://jesseahawkins.com/frontier/retirements/#r-azure-gpt-5-6-luna-2026-07-09retire:azure:gpt-5.6-luna@2026-07-09:2028-01-11Microsoft’s page: “gpt-5.6-luna | 2026-07-09 | GA | 2028-01-11 | —”. https://learn.microsoft.com/en-us/azure/foundry/openai/concepts/model-retirement-scheduleMon, 26 Oct 2026 00:00:00 GMThttps://jesseahawkins.com/frontier/retirements/#r-azure-gpt-5-6-sol-2026-07-09retire:azure:gpt-5.6-sol@2026-07-09:2028-01-11Microsoft’s page: “gpt-5.6-sol | 2026-07-09 | GA | 2028-01-11 | —”. https://learn.microsoft.com/en-us/azure/foundry/openai/concepts/model-retirement-scheduleMon, 26 Oct 2026 00:00:00 GMThttps://jesseahawkins.com/frontier/retirements/#r-azure-gpt-5-6-terra-2026-07-09retire:azure:gpt-5.6-terra@2026-07-09:2028-01-11Microsoft’s page: “gpt-5.6-terra | 2026-07-09 | GA | 2028-01-11 | —”. https://learn.microsoft.com/en-us/azure/foundry/openai/concepts/model-retirement-scheduleMon, 26 Oct 2026 00:00:00 GMThttps://jesseahawkins.com/frontier/retirements/#r-azure-gpt-5-2025-08-07retire:azure:gpt-5@2025-08-07:2027-02-09Microsoft’s page: “gpt-5 | 2025-08-07 | GA | 2027-02-09 | —”. https://learn.microsoft.com/en-us/azure/foundry/openai/concepts/model-retirement-scheduleMon, 26 Oct 2026 00:00:00 GMThttps://jesseahawkins.com/frontier/retirements/#r-azure-gpt-audio-1-5-2026-02-23retire:azure:gpt-audio-1.5@2026-02-23:2027-08-24Microsoft’s page: “gpt-audio-1.5 | 2026-02-23 | GA | 2027-08-24 | —”. https://learn.microsoft.com/en-us/azure/foundry/openai/concepts/model-retirement-scheduleMon, 26 Oct 2026 00:00:00 GMThttps://jesseahawkins.com/frontier/retirements/#r-azure-gpt-audio-mini-2025-10-06retire:azure:gpt-audio-mini@2025-10-06:2027-04-06Microsoft’s page: “gpt-audio-mini | 2025-10-06 | GA | 2027-04-06 | —”. https://learn.microsoft.com/en-us/azure/foundry/openai/concepts/model-retirement-scheduleMon, 26 Oct 2026 00:00:00 GMThttps://jesseahawkins.com/frontier/retirements/#r-azure-gpt-audio-mini-2025-12-15retire:azure:gpt-audio-mini@2025-12-15:2027-06-15Microsoft’s page: “gpt-audio-mini | 2025-12-15 | GA | 2027-06-15 | —”. https://learn.microsoft.com/en-us/azure/foundry/openai/concepts/model-retirement-scheduleMon, 26 Oct 2026 00:00:00 GMThttps://jesseahawkins.com/frontier/retirements/#r-azure-gpt-audio-2025-08-28retire:azure:gpt-audio@2025-08-28:2027-03-02Microsoft’s page: “gpt-audio | 2025-08-28 | GA | 2027-03-02 | —”. https://learn.microsoft.com/en-us/azure/foundry/openai/concepts/model-retirement-scheduleMon, 26 Oct 2026 00:00:00 GMThttps://jesseahawkins.com/frontier/retirements/#r-azure-gpt-chat-latest-2026-05-05retire:azure:gpt-chat-latest@2026-05-05:2026-11-17Microsoft’s page: “gpt-chat-latest | 2026-05-05 | Preview | 2026-11-17 | —”. https://learn.microsoft.com/en-us/azure/foundry/openai/concepts/model-retirement-scheduleMon, 26 Oct 2026 00:00:00 GMThttps://jesseahawkins.com/frontier/retirements/#r-azure-gpt-chat-latest-2026-05-28retire:azure:gpt-chat-latest@2026-05-28:2026-12-08Microsoft’s page: “gpt-chat-latest | 2026-05-28 | Preview | 2026-12-08 | —”. https://learn.microsoft.com/en-us/azure/foundry/openai/concepts/model-retirement-scheduleMon, 26 Oct 2026 00:00:00 GMThttps://jesseahawkins.com/frontier/retirements/#r-azure-gpt-chat-latest-2026-06-24retire:azure:gpt-chat-latest@2026-06-24:2026-11-17Microsoft’s page: “gpt-chat-latest | 2026-06-24 | Preview | 2026-11-17 | —”. https://learn.microsoft.com/en-us/azure/foundry/openai/concepts/model-retirement-scheduleMon, 26 Oct 2026 00:00:00 GMThttps://jesseahawkins.com/frontier/retirements/#r-azure-gpt-chat-latest-2026-08-06retire:azure:gpt-chat-latest@2026-08-06:2027-01-12Microsoft’s page: “gpt-chat-latest | 2026-08-06 | Preview | 2027-01-12 | —”. https://learn.microsoft.com/en-us/azure/foundry/openai/concepts/model-retirement-scheduleMon, 26 Oct 2026 00:00:00 GMThttps://jesseahawkins.com/frontier/retirements/#r-azure-gpt-chat-latest-2026-10-07retire:azure:gpt-chat-latest@2026-10-07:2027-05-18Microsoft’s page: “gpt-chat-latest | 2026-10-07 | Preview | 2027-05-18 | —”. https://learn.microsoft.com/en-us/azure/foundry/openai/concepts/model-retirement-scheduleMon, 26 Oct 2026 00:00:00 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GMThttps://jesseahawkins.com/frontier/retirements/#r-azure-gpt-oss-120b-1retire:azure:gpt-oss-120b@1:2027-09-15Microsoft’s page: “gpt-oss-120b | 1 | GA | 2027-09-15 | —”. https://learn.microsoft.com/en-us/azure/foundry/openai/concepts/model-retirement-scheduleMon, 26 Oct 2026 00:00:00 GMThttps://jesseahawkins.com/frontier/retirements/#r-azure-gpt-realtime-1-5-2026-02-23retire:azure:gpt-realtime-1.5@2026-02-23:2027-08-24Microsoft’s page: “gpt-realtime-1.5 | 2026-02-23 | GA | 2027-08-24 | —”. https://learn.microsoft.com/en-us/azure/foundry/openai/concepts/model-retirement-scheduleMon, 26 Oct 2026 00:00:00 GMT