claude-fable-5-1 — Active or Preview — shutdown Not sooner than September 1, 2027 or 2027-12-05 — sources disagree
For claude-fable-5-1, provider is Anthropic; lifecycle status is disputed: Active per platform.claude.com, Preview per learn.microsoft.com; shutdown / retirement date is disputed: Not sooner than September 1, 2027 per platform.claude.com, 2027-12-05 per learn.microsoft.com; platform / deployment scope is Anthropic API / Claude Platform on AWS / Microsoft Foundry, recorded from its source on 2026-09-01; source re-checked 2026-11-11.
- Provider
- Anthropic our reading
- Microsoft Azure / Foundry per learn.microsoft.com
- Model ID / API name
- claude-fable-5-1 verified
- Lifecycle status
- Active sources disagree
- Shutdown / retirement date
- Not sooner than September 1, 2027 sources disagree
- Platform / deployment scope
- Anthropic API / Claude Platform on AWS / Microsoft Foundry our reading
- Microsoft Foundry — version 1, hosted on Anthropic infrastructure per learn.microsoft.com
- Human-readable model name
- claude-fable-5-1 per learn.microsoft.com
Values marked our reading are our classification of what the source says — the source does not print them in those words. The quote below is the evidence for each one; judge it yourself.
What the source says
| claude-fable-5-1 | Active | N/A | Not sooner than September 1, 2027 |
— platform.claude.com, retrieved 2026-09-01
Where each value comes from
The value above is stated away from the sentence quoted with the answer, so the passage that states it is shown here too.
Platform / deployment scope
The dates on this page apply to Anthropic-operated platforms: the Claude API, Claude Platform on AWS, and Microsoft Foundry. Partner-operated platforms (Amazon Bedrock and Google Cloud) set their own retirement schedules, so a model's lifecycle status and dates can differ.
— all from platform.claude.com, retrieved 2026-09-01
Sources disagree
More than one authority states this, and they do not state the same thing. Both are reproduced with the source each came from — deciding between them is yours, not ours.
Lifecycle status
platform.claude.com says lifecycle status is Active, as of 2026-09-01.
| claude-fable-5-1 | Active | N/A | Not sooner than September 1, 2027 |
https://platform.claude.com/docs/en/about-claude/model-deprecations.md
learn.microsoft.com says lifecycle status is Preview, as of 2026-09-09.
| claude-fable-5-1 | 1 | Preview | 2027-12-05 | — |
https://learn.microsoft.com/en-us/azure/foundry/openai/concepts/model-retirement-schedule
Shutdown / retirement date
platform.claude.com says shutdown / retirement date is Not sooner than September 1, 2027, as of 2026-09-01.
| claude-fable-5-1 | Active | N/A | Not sooner than September 1, 2027 |
https://platform.claude.com/docs/en/about-claude/model-deprecations.md
learn.microsoft.com says shutdown / retirement date is 2027-12-05, as of 2026-09-09.
| claude-fable-5-1 | 1 | Preview | 2027-12-05 | — |
https://learn.microsoft.com/en-us/azure/foundry/openai/concepts/model-retirement-schedule
Where the other sources' values come from
These values were taken from a passage elsewhere on the other source's page, not from the row quoted with it above.
Shutdown / retirement date
| Model | Version | Lifecycle | Retirement date | Replacement | | --- | --- | --- | --- | --- | | claude-sonnet-5 | 2 | GA | 2027-06-30 | — | | claude-sonnet-5 | 1 | GA | 2027-06-30 | — | | claude-sonnet-4-6 | 1 | GA | 2027-02-10 | — | | claude-sonnet-4-5 | 1 | GA | 2026-11-30 | claude-sonnet-5-5 | | claude-opus-5 | 2 | GA | 2027-07-08 | — | | claude-opus-5 | 1 | GA | 2027-07-08 | — | | claude-opus-4-8 | 2 | GA | 2027-09-01 | — | | claude-opus-4-8 | 1 | GA | 2027-09-01 | — | | claude-opus-4-7 | 1 | GA | 2027-04-06 | — | | claude-opus-4-6 | 1 | GA | 2027-02-02 | — | | claude-opus-4-5 | 1 | GA | 2026-11-24 | — | | claude-opus-4-1 | — | Retired | 2026-08-05 | claude-opus-5 | | claude-haiku-4-5 | 1 | GA | 2026-11-15 | — | | claude-haiku-4-5 | 2 | GA | 2026-11-15 | — | | claude-fable-5-1 | 1 | Preview | 2027-12-05 | — |
— learn.microsoft.com, retrieved 2026-09-09
Platform / deployment scope
Version 1: Hosted on Anthropic infrastructure
— learn.microsoft.com, retrieved 2026-09-09
Sources
- platform.claude.comhttps://platform.claude.com/docs/en/about-claude/model-deprecations.md
- platform.claude.comhttps://platform.claude.com/docs/en/about-claude/model-deprecations
- learn.microsoft.comhttps://learn.microsoft.com/en-us/azure/foundry/openai/concepts/model-retirement-schedule