Claude Fable 5.2
Claude Fable 5.2 is Anthropic's current Fable model, released on November 9, 2026, for demanding reasoning and long-horizon agentic work, at lower prices than Claude Fable 5.1. It takes text and image input, returns text, uses adaptive thinking that is always on, and has a June 2026 reliable knowledge cutoff.
Released
November 9, 2026
Type
reasoning
License
proprietary
Context
—
Anthropic states a 1M-token context window and up to 128K output tokens.
Pricing
Input
$8.00 / 1M tokens
Output
$40.00 / 1M tokens
List price on the developer's own pages, checked . Base price. 5-minute cache write $10, 1-hour cache write $16, cache read $0.20. Batch API 50% off. Fast mode $16 input / $80 output.
Capabilities
Sources
Every figure on this page was checked against these pages on . A figure we could not source is left out.
- Claude docs: Claude Fable 5.2 (opens in a new tab)
- Claude docs: Models overview (opens in a new tab)
- Claude docs: Pricing (opens in a new tab)
- Claude docs: Release notes (opens in a new tab)
Spotted something out of date? Tell us.
Links
In the news: Claude Fable 5.2 and Anthropic
InfoWorld AI
Anthropic unveils Claude Fable 5.2, Mythos 5.2 with coding gains and lower prices
Decrypt
Anthropic's Claude Fable 5.2 and Mythos 5.0 Are Impressive, But Be Prepared to Sell a Kidney to Afford Them
Digital Trends
Claude Fable 5.2 and Mythos 5.2 are here to raise the bar for AI coding and scientific research
The Hacker News
Linux Kernel TCP Flaw With 9.8 CVSS Score Affects Ubuntu, Red Hat and Other Distributions
A critical vulnerability in the Linux kernel's TCP code, tracked as CVE-2026-98432, has been identified and affects distributions including Ubuntu and Red Hat Enterprise Linux (RHEL). The Linux kernel's own CVE team has assigned this flaw a severity score of 9.8 out of 10 on the CVSS scale. Anthropic reported on October 27 that its AI model successfully generated an exploit for this vulnerability. The exploit allows a remote attacker, without needing any credentials, to execute commands with root privileges on affected Linux servers.
The Hacker News
Fake ChatGPT and Claude Apps Abuse Signed Executables to Deploy Crypto Miners
Threat actors are distributing malicious loaders and cryptocurrency miners disguised as artificial intelligence (AI) desktop applications for Anthropic Claude and OpenAI ChatGPT. This campaign has been dubbed Yoba. The activity involves the creation of fake GitHub projects that falsely claim to be desktop applications such as GPT-5.6 Sol, GPT-6 Astra, and Claude Opus. These fake applications are used to deliver a malware family. These malicious applications abuse signed executables to deploy cryptocurrency miners, posing a security risk to users seeking AI tools.