Searches for “Claude Fable 5.5” rose sharply from September 2026. This page lists exactly what Anthropic's own documentation shows as of 13 October 2026, and labels rumour as rumour. Numbers we could not source officially do not appear here at all.
As of 13 October 2026, Claude Fable 5.5 does not appear in Anthropic's official models overview, pricing page, or Fable announcement page. The shipping lineup is Claude Fable 5.1, Opus 5.5, Sonnet 5.5 and Haiku 5.5. Any statement that gives Fable 5.5 specs, pricing or a release date as settled fact is not coming from an official source.
Every row below can be checked on the Claude Platform documentation's Models overview page (read 2026-10-13).
| Model | API ID | Price (input / output, per MTok) | Context / max output |
|---|---|---|---|
| Claude Fable 5.1 | claude-fable-5-1 |
$10 / $50 | 1M / 128K |
| Claude Opus 5.5 | claude-opus-5-5 |
$4 / $20 | 1M / 128K |
| Claude Sonnet 5.5 | claude-sonnet-5-5 |
$2 / $10 | 1M / 128K |
| Claude Haiku 5.5 | claude-haiku-5-5 |
1M / 128K | |
| Claude Fable 5.5 | Not in the official list — no API ID, no price, no specs (2026-10-13) | ||
The timeline mixes official events with observable search-interest changes; the two are labelled separately.
| Date | Type | What happened |
|---|---|---|
| 2026-06-09 | Anthropic announces Claude Fable 5 (official announcement). | |
| 2026-06-12 | Official notice: Fable 5 access unavailable. | |
| 2026-07-01 | Official notice: Fable 5 access restored. | |
| 2026-09-01 | Anthropic announces Claude Fable 5.1 (official announcement). | |
| 2026-09-20 | Relative search interest for “claude fable 5.5” peaks at 100 on Google Trends (US). | |
| 2026-09-22 | Anthropic announces Claude Opus 5.5 (official). | |
| 2026-10-01 | Third-party articles discuss Fable 5.5 and state that no confirmed public release date exists in official sources. | |
| 2026-10-13 | Checked for this page: the official model list still shows only Fable 5.1 / Opus 5.5 / Sonnet 5.5 / Haiku 5.5. |
The discussion has clustered around a documentation path, community reposts and video titles. None of those is an official release channel, so this page records only that the discussion happened — it does not repeat any specific spec, price or date from it.
To decide whether a model really exists, check these three in order.
| Order | Where to look | What counts as confirmation |
|---|---|---|
| 1 | Claude Platform docs — Models overview | The model appears in the comparison table with an API ID |
| 2 | The official pricing page | Explicit input and output rates |
| 3 | Anthropic release notes / newsroom | A dated, attributed announcement |
| Not enough | A documentation path, community repost, video title, or second-hand article | None of these confirms anything |
If you searched for Fable 5.5 because you need to decide something now, these are the options you can order today against official sources.
| What you need | Available now | Price (input / output, per MTok) |
|---|---|---|
| Frontier reasoning, long-horizon work | Claude Fable 5.1 | $10 / $50 |
| Everyday agentic coding, better value | Claude Opus 5.5 | $4 / $20 |
| Cheap and high volume | Claude Sonnet 5.5 / Haiku 5.5 | |
| Open weights, self-hosting, lowest unit cost | DeepSeek V4-Pro / V4.1-Flash | From $0.66 / $1.98 (off-peak; peak is 2× and cache hits are far cheaper) |
| Open weights plus faster token output | GLM 5.3 Prime | $2.80 / $8.80 |
There is no official confirmation. As of 13 October 2026, Claude Fable 5.5 does not appear in Anthropic's models overview, pricing page, or Fable announcement page, and Anthropic has not announced it. We say unconfirmed rather than non-existent — a vendor's unannounced roadmap is not something outsiders can read; what can be said is that no official record exists yet.
There is no official date, and this page will not invent one. Anthropic has published no timeline for a Fable 5.5; third-party articles about the date state that they could not find a confirmed public release date in official sources either.
Claude Fable 5.1, announced 1 September 2026. Its API ID is claude-fable-5-1 and it costs $10 per million input tokens and $50 per million output tokens, with a 1M context window and 128K maximum output. Claude Fable 5 remains available, but Anthropic recommends migrating to Fable 5.1.
Check three primary sources in order: the Claude Platform models overview, the official pricing page, and the release notes or newsroom. A model counts as confirmed when it appears there with an API ID. A documentation path, a community repost, or a video title does not.
Only you can price the wait. If you need frontier reasoning today, Claude Fable 5.1 and Opus 5.5 are both shipping. If what you actually need is open weights, self-hosting, or a far lower unit price, DeepSeek V4 already has published weights and public list pricing, so waiting has an opportunity cost.
This page uses primary sources only; the interest data comes from Google Trends and is labelled as such.