Anthropic releases Claude Fable 5.2 and Mythos 5.2
Anthropic introduced Fable 5.2 and Mythos 5.2 on the same underlying model, with broad access to Fable and verification-gated access to Mythos.
AT A GLANCE
Key points
- Fable 5.2 is broadly available
- Mythos 5.2 remains verification-gated
- Anthropic reports output up to 30% faster
What is changing?
Anthropic released Claude Fable 5.2 and Claude Mythos 5.2 for coding, reasoning and visual tasks. The company says both options use the same underlying model. Fable 5.2 is broadly available with standard safeguards, while Mythos 5.2 is restricted through verification programs for cybersecurity and life sciences.
Anthropic says the new releases generate output up to 30% faster than version 5.1. Standard pricing is $8 per million input tokens and $40 per million output tokens. An optional fast mode is said to deliver up to 2.5 times the speed at $16 and $80 respectively. These speed and capability figures are provider measurements.
Fable 5.2 is available today through Anthropic platforms as well as AWS, Google Cloud and Microsoft Azure. Mythos access requires additional verification and use-case controls. The split creates different deployment policies for general technical workloads and higher-risk cybersecurity or life-sciences tasks.
Explore the original sources
Source date: 9 November 2026.
Published by AI Radar: 9 Nov 2026, 23:11 (Istanbul, UTC+3). Updated: 10 Nov 2026, 00:11.
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