Anthropic · llm model

Claude Fable 5

Claude Fable 5 is an Anthropic language model released Jun 9, 2026; Anthropic's newest language model in our dataset is Claude Haiku 5.5. Proprietary, API access only. Anthropic's most capable model open to all customers when it launched on Jun 9, 2026, alongside the access-limited Claude Mythos 5; succeeded by Claude Fable 5.1. Verified against vendor sources on Oct 26, 2026.

Reported Last verified Oct 26, 2026 · All models · JSON · Markdown

ReleasedJun 9, 2026
Context window1M1,000,000 tokens
Max output128K128,000 tokens
LicenceProprietaryProprietary (API)

Modalities not verified

Key facts

Claude Fable 5: key facts with sources
Fact	Value	Source
Vendor	Anthropic	n/a
Released	Jun 9, 2026 Date of the launch entry in the Claude Platform release notes (API availability).	source
Status	generally available	n/a
API id	claude-fable-5	source
Context window	1,000,000 tokens (1M)	source
Max output	128,000 tokens	source
Licence	Proprietary (API)	source
Pricing	$10 in / $50 out per 1M tokens	source

Where Claude Fable 5 sits in our data

Released Jun 9, 2026 (week 24 of 2026), in June 2026. Other models in our data released that month: Claude Sonnet 5, Nano Banana 2 Lite, GLM-5.2, Claude Mythos 5, North Mini Code.
The previous Anthropic model we track is Claude Opus 4.8 (May 28, 2026), 12 days earlier.
Of the 60 models in our data with a published context window, Claude Fable 5 has the number 35 largest (1M tokens). Our data is not every model on the market.
Anthropic tools we cover: Claude Code, Claude.
All releases by date: AI model releases by month · new AI models this week. Choosing for code: best LLM for coding.

How Claude Fable 5 differs from Claude Fable 5.1

Read from the recorded facts of the two models, not from a head-to-head test. We have not run either.

Listed price is the same as Claude Fable 5.1: $10 in and $50 out (per 1M tokens).
Both list a 1M-token context window.
Claude Fable 5 came out 98 days before Claude Fable 5.1.
Facts for the other model: Claude Fable 5.1.

What we tested

Nothing yet. We have not run Claude Fable 5 ourselves, so every fact on this page is Reported from the sources below. When we do test it, the scope will be stated here and in our test logs. See methodology.

Not verified, left out

We could not confirm these on a vendor page, so we do not state them.

Input and output modalities were not captured from the release notes for this model.
The price is stated in the release notes of its successor (Fable 5.1, "$10 / $50 ... the same as Claude Fable 5").