Is Claude Fable 5.5 Out? Release Status, October 2026

No. As of 27 October 2026, Anthropic has not announced Claude Fable 5.5. Its release notes and models overview name Fable 5.1 as the newest Fable, alongside Opus 5.5, Sonnet 5.5 and Haiku 5.5; Claude Code v2.1.311 names the same four. An Azure listing is disputed, every predicted date has passed, and motif's 59 Fable 5.5 credits are creator claims.

Written by motif with Claude Fable 5.1 · Facts checked October 27, 2026 · First published October 16, 2026 · 7 min read

AI-assisted writing: this guide was drafted with Claude Fable 5.1, and each fact is linked to its sources.

Is Claude Fable 5.5 released?

No. As of 27 October 2026, none of the official Anthropic pages checked for this guide announces, names or dates Claude Fable 5.5. The newest model launch in the Claude release notes is Claude Haiku 5.5 on 7 October 2026; the newest entry of any kind, dated 21 October 2026, is the Claude Duet research preview, not a model. The models overview lists four current models: Claude Fable 5.1, Claude Opus 5.5, Claude Sonnet 5.5 and Claude Haiku 5.5.

The newest Fable is Claude Fable 5.1, launched on 1 September 2026 together with Claude Mythos 5.1. Anthropic's Fable 5.1 model page labels it "Latest", and the Claude Fable family page says it is available to Pro, Max, Team and Enterprise users.

What is officially confirmed?

Model launches in Anthropic's release notes since 1 September 2026, as of 2026-10-27
Model	Launch date	API model ID
Claude Haiku 5.5	2026-10-07	claude-haiku-5-5
Claude Sonnet 5.5	2026-09-28	claude-sonnet-5-5
Claude Opus 5.5	2026-09-22	claude-opus-5-5
Claude Fable 5.1 and Claude Mythos 5.1	2026-09-01	claude-fable-5-1, claude-mythos-5-1

Launch dates come from the Claude release notes and model IDs from the Claude Platform release notes, whose newest entry (23 October 2026, the Claude Tag API) does not mention Fable 5.5. Neither page has a Fable 5.5 entry. The newest model announcement in the Anthropic Newsroom is Haiku 5.5.

A fifth check is Claude Code. Its newest release, v2.1.311 of 26 October 2026, says the ultrathink keyword now runs "at xhigh effort on Opus 5.5, Sonnet 5.5, Haiku 5.5 and Fable 5.1 through Anthropic's API". Fable 5.1 is the only Fable it names, and the release does not mention Fable 5.5.

The Opus 5.5 announcement said Sonnet 5.5 and Haiku 5.5 would follow "in the coming weeks". It compares Opus 5.5 with Fable 5.1 but names no upcoming Fable model and does not mention Fable 5.5. Sonnet 5.5 and Haiku 5.5 have both since launched. The Sonnet 5.5 announcement named Haiku 5.5 before its launch. No Anthropic page checked for this guide names an upcoming Fable 5.5 in this way.

What is reported but not confirmed?

Every timing or availability claim about Fable 5.5 found for this page comes from X, Reddit, a GitHub bot or aggregators. None comes from Anthropic.

Reported, not confirmed

Predicted dates. Status: every date has passed without a launch. On 1 October, @imjustnewatai wrote that Fable 5.5 was "expected to release next week" and mentioned "a Tuesday release". Tuesday 6 October passed without a launch. On 13 October an r/singularity post said release was due that week. Its title cites only "Leo on Twitter", with no account or underlying source. That week passed without a launch. The r/ClaudeAI post said "any moment", resting on the LiteLLM row that was later removed. On 15 October, @lyraxana and @TokenGremlin claimed partners or select companies had access, citing no source, and @cgtwts wrote "looks like fable 5.5 is coming tomorrow". 16 October passed without a launch. On 17 October, TestingCatalog wrote that Anthropic "prepares to release Claude Fable 5.5 next week", citing leakers and codenames, and added that "Anthropic hasn't confirmed anything". The week of 19 to 25 October passed without a launch.

What does the motif archive show?

In the motif catalogue generated on 15 October 2026, 59 of 3,599 entries (1.6%) credit Fable 5.5 in the model field. All 59 are creator claims: the catalogue states that model attribution is the creator's claim, and no entry carries a model ID. These credits do not show that Fable 5.5 exists or was used. 56 entries name no other model; 3 also name Opus 5.5. All 59 come from X, from 32 creators, dated 28 September to 15 October, with a peak of 28 on 2 October. Combined engagement at collection time was 31,796 likes and 2,927,589 views. For context, Opus 5.5 is credited on 2,832 entries including combinations, Sonnet 5.5 on 80, Fable 5.1 on 5 and Haiku 5.5 on 3.

Human inventions unfold on a one-day clock toward midnight by @imjustnewatai, the most-liked entry credited to Fable 5.5 (8,124 likes archived).
Red dot bounces through hills and stars to spell Fable 5.5 by Tak (@cherry_mx_reds), 15 seconds.
Boxy orange Claude mascot lives through a busy day by Ishu Agrawal (@ishuagra02), about 91 seconds.
Lonely robots in a dark 3D world retell the Hugging Face incident by Chetaslua (@chetaslua), about 3 minutes 41 seconds.

Which model should you use for motion today?

Anthropic's Claude Motion help article does not name a specific Claude model. Claude Motion is in beta on Team and Enterprise plans and builds animations as code; it does not use a video generation model.

The current models are the four in the models overview. Anthropic suggests starting with Claude Opus 5.5 for most workloads. It describes Claude Fable 5.1 as being "for demanding reasoning and long-horizon agentic work, or when your evals on Claude Opus 5.5 at higher effort still fall short". The other two are Claude Sonnet 5.5 and Claude Haiku 5.5. Legacy models such as Fable 5 and Opus 5 remain available.

How would you know if Claude Fable 5.5 launches?

The most recent launch, Claude Haiku 5.5, appeared in four places: a release-notes entry, a Platform release-notes entry with its model ID, a row in the models overview, and an announcement in the newsroom. Claude Code release notes then name the model when the tool adopts it. Check these official pages:

Claude release notes for a launch entry.
Claude Platform release notes for an API model ID.
Models overview for the current line-up.
Anthropic Newsroom for an announcement post.
Claude Fable family page for plan availability.
Claude Code releases for a changelog entry that names a new Fable model.

Do not treat an HTTP status code as a signal: the docs path /docs/en/models/fable-5-5/overview already returns HTTP 200, but the page it serves says "Not Found".

FAQ

Is Claude Fable 5.5 out?

No. As of 27 October 2026, no Anthropic release note, models overview entry, newsroom post or Claude Code release names Claude Fable 5.5. The newest model launch is Claude Haiku 5.5 on 7 October 2026.

When is the Claude Fable 5.5 release date?

Anthropic has not announced one, and no official page names Fable 5.5 at all. Dates circulating on social media are listed above under reported, not confirmed claims; none comes from Anthropic, and every one of them has passed without a launch.

Is Claude Fable 5.5 on Azure, Bedrock or Vertex?

Anthropic's models overview gives Amazon Bedrock, Google Cloud and Microsoft Foundry IDs only for current models, and none for Fable 5.5. Microsoft Learn lists only claude-fable-5 and claude-fable-5-1 as Fable models. A disputed Azure listing is covered in the reported section above.

What is the newest Claude Fable model?

Claude Fable 5.1, launched on 1 September 2026 with Claude Mythos 5.1. Anthropic labels it "Latest" and offers it to Pro, Max, Team and Enterprise users.

Can I use Claude Fable 5.5 for motion graphics?

No official Anthropic channel offers it, because Anthropic has not announced it. The 59 motif entries credited to Fable 5.5 are creator claims. The current models are Opus 5.5, Fable 5.1, Sonnet 5.5 and Haiku 5.5.

Sources

All guides