Anthropic · llm model

Claude Fable 5.2

Claude Fable 5.2 is Anthropic's latest language model in our dataset, released Nov 9, 2026. Proprietary, API access only. Anthropic's most capable generally available Claude model, released Nov 9, 2026 with Claude Mythos 5.2 (same model, access-limited), at $8/$40 per 1M tokens. Verified against vendor sources on Nov 9, 2026.

Reported Last verified Nov 9, 2026 · All models · JSON · Markdown

Primary source: https://www.anthropic.com/claude-fable-and-mythos-5-2. We are the fast, independent index; the vendor’s own page is the source of record for these model facts.

Claude Fable 5.2 at a glance: API id claude-fable-5-2; 1,000,000-token context window; up to 128,000 output tokens; takes text, image in; returns text; listed price $8 in / $40 out per 1M tokens.

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

InTextImageOutText

Key facts

Vendor-reported facts are read from the linked vendor page on the date shown above; we did not run the model. Independently tested means we ran it; no fact on this page is. Editorial is our own classification, not a vendor claim. Where a linked page does not itself state a value, the row says so. How to read provenance.

Claude Fable 5.2: key facts with sources
Fact	Value	Label	Source
Vendor	Anthropic	Editorial	n/a
Released	Nov 9, 2026	Vendor-reported	source
Status	generally available	Editorial	n/a
API id	claude-fable-5-2	Vendor-reported	source
Context window	1,000,000 tokens (1M)	Vendor-reported	source
Max output	128,000 tokens	Vendor-reported	source
Input	text, image	Vendor-reported	source
Output	text	Vendor-reported	source
Licence	Proprietary (API)	Vendor-reported	source
Pricing	$8 in / $40 out per 1M tokens Optional fast mode (up to 2.5x faster generation) costs $16 input / $80 output per 1M tokens. Prices: platform.claude.com/docs/en/about-claude/models/overview · Checked Nov 9, 2026	Vendor-reported	source

Where Claude Fable 5.2 sits in our data

Released Nov 9, 2026 (week 46 of 2026), in November 2026. Other models in our data released that month: Muse Ember, Ampersand v0.1, Arete-27B, Gemini Omni 1.2 Flash.
The previous Anthropic model we track is Claude Haiku 5.5 (Oct 7, 2026), 33 days earlier.
Of the 73 models in our data with a published context window, Claude Fable 5.2 has the number 22 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. Price and rank context: LLM pricing comparison · cheapest LLM API · OpenRouter pricing · best AI model right now.

Alternatives to Claude Fable 5.2

Language models from other vendors that share at least one of our groups with Claude Fable 5.2. Comparable on paper, from each model’s sourced facts; we have not run them.

Gemini 4 ArgonGoogle · Both in: Frontier models, Reasoning, Agents, Coding · $2 in / $10 out per 1M tokens (introductory price until Nov 30, 2026; list $4 / $20) · 1.05M context · released Oct 13, 2026
GPT-6.1 SolOpenAI · Both in: Frontier models, Coding, Agents, Reasoning · $2 in / $10 out per 1M tokens · 1.05M context · released Sep 29, 2026
GPT-6 SolOpenAI · Both in: Frontier models, Coding, Agents, Reasoning · $2 in / $10 out per 1M tokens · released Sep 22, 2026
Inkling 2 SmallThinking Machines Lab · Both in: Agents, Coding, Reasoning · released Nov 5, 2026
Gemini 4 CarbonGoogle · Both in: Frontier models, Agents, Coding · $2 in / $10 out per 1M tokens (introductory price, end date not stated; list $4 / $20) · released Oct 28, 2026
Kimi K3.1 ProMoonshot AI · Both in: Agents, Coding, Reasoning · $2 in / $10 out per 1M tokens · 1.05M context · released Oct 23, 2026

Side by side: Best AI model for agents (Nov 2026): Claude Opus 5.5 leads Terminal-Bench 4.0 · Longest context window LLMs

How Claude Fable 5.2 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 $8 in and $40 out, against $10 in and $50 out for Claude Fable 5.1 (per 1M tokens).
Both list a 1M-token context window.
Both accept text, image as input.
Claude Fable 5.2 came out 55 days after Claude Fable 5.1.
Facts for the other model: Claude Fable 5.1.

What the sources say

These are claims from the linked pages, not our measurements.

Anthropic says Fable 5.2 generates outputs up to 30% faster than Fable 5.1 at a lower price.

What we tested

Nothing yet. We have not run Claude Fable 5.2 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.

Claude Mythos 5.2 is the same underlying model but is limited to Anthropic's verification programs, so it has no separate entry.
Fast-mode pricing ($16/$80 per 1M tokens) is noted here rather than as a separate price tier.

Claude Fable 5.2 FAQ

When was Claude Fable 5.2 released?

Anthropic released Claude Fable 5.2 on Nov 9, 2026. Source.

How much does Claude Fable 5.2 cost?

The listed API price is $8 in / $40 out per 1M tokens. Prices change; the source shows the current figure. Source.

How large is the Claude Fable 5.2 context window?

1,000,000 tokens, with up to 128,000 output tokens. Source.

Is Claude Fable 5.2 open weights?

No. The weights are not published; the licence is listed as Proprietary (API). Source.

What is the API model id for Claude Fable 5.2?

claude-fable-5-2. Source.

Has Agentic Weekly tested Claude Fable 5.2?

Not yet. Every fact on this page is Reported: read from the linked vendor pages, not measured by us.

Sources

Compare and guides

We have no head-to-head page or guide that names Claude Fable 5.2 yet. These hubs cover the models we do compare.

All model comparisons · All guides · Model releases by month

The Weekly Verdict. Free, every Monday.

A free email every Monday: the week's few big AI releases, then 5 short use cases for the new models, each with a prompt you can paste.

Free. Double opt-in. One click to unsubscribe.