Fable 5.5 Release Date: The Evidence, Not the Rumor
This is a dated tracker. As of October 3, 2026 there is no confirmed Fable 5.5 release date, price or API model ID. Below is exactly what Anthropic has published, what would count as real launch evidence, and the current models that work today.
Confirmed vs. speculation
| Claim | Verdict |
|---|---|
Fable 5.1 is the current Fable model (claude-fable-5-1) | Confirmed |
| Opus 5.5 and Sonnet 5.5 have shipped | Confirmed |
| Fable 5.5 has a release date | Not confirmed |
A working claude-fable-5-5 API ID exists publicly | Not confirmed |
| Fable 5.5 pricing, context window or benchmarks | Not confirmed |
Sourced from Anthropic's public news page, model directory, API release notes and pricing documentation. It does not rule out an unreleased internal model; it does mean there is no defensible basis for a countdown, a price quote or a benchmark comparison.
Claude's 2026 release record
| Date | Release | Model ID |
|---|---|---|
| Jun 9, 2026 | Claude Fable 5 | claude-fable-5 |
| Sep 1, 2026 | Claude Fable 5.1 | claude-fable-5-1 |
| Sep 22, 2026 | Claude Opus 5.5 | claude-opus-5-5 |
| Sep 28, 2026 | Claude Sonnet 5.5 | claude-sonnet-5-5 |
| — | Claude Fable 5.5 | Not announced |
The pattern shows independent schedules, not a synchronized "5.5" train. Fable skipped 5.2–5.4 and went to 5.1 in September; Opus and Sonnet received the 5.5 label on their own dates. Inferring a Fable 5.5 date from Opus or Sonnet adds a claim the sources do not make.
How to verify a Fable 5.5 launch (3 checks)
- Announcement: a dated Anthropic announcement or API release note naming the exact model.
- API contract: a model page with the exact ID, context/output limits, supported parameters, caching and billing conditions.
- Your access: a successful request from the provider and account you will actually deploy with.
Do not rename model IDs. Editing claude-fable-5-1 into claude-fable-5-5 and shipping it is not a configuration — it is a request for a model that is not documented. Use an ID only after the intended provider exposes it.
What to run while you wait
| Model | Anthropic list (in/out) | Use when |
|---|---|---|
| Opus 5.5 | $4 / $20 | Default for most coding and knowledge work |
| Sonnet 5.5 | $2 / $10 | Volume tasks that already pass your eval |
| Fable 5.1 | $10 / $50 | Longest-horizon agent runs where Opus still falls short |
Set an acceptance test, record accepted tasks, and keep the model configurable. That way a future Fable release is a one-line change plus a fresh comparison — not a rebuild.
Start on the current Fable, not a rumor
OmniaKey lists claude-fable-5-1 at $2.80/$14 per million · no card required · USDT or card
FAQ
Is there any Fable 5.5 release date?
No confirmed date or window as of October 3, 2026.
Will Fable 5.5 use the ID claude-fable-5-5?
Unknown. Fable 5.1 uses claude-fable-5-1, but naming is not a guarantee for a future model. Wait for the documented ID.
Is Fable 5.5 available on OmniaKey?
No. OmniaKey currently lists claude-fable-5-1; check the live catalog before deploying.