Claude Fable 5.2 and Mythos 5.2 launch in Microsoft Foundry with disclosed pricing

Microsoft made Claude Fable 5.2, Fable 5.2 Fast, Mythos 5.2 and Mythos 5.2 Fast available in Microsoft Foundry, with Fable 5.2 generally available and Mythos 5.2 limited to approved accounts.

Microsoft announced on November 9, 2026, that Claude Fable 5.2, Fable 5.2 Fast, Mythos 5.2 and Mythos 5.2 Fast are now available in Microsoft Foundry, according to a post by Microsoft's amar_badal on the Azure AI Foundry blog. Fable 5.2 is generally available, while Mythos 5.2 remains gated behind account-team approval for security and life-sciences use.

What's new in Microsoft Foundry

Claude Fable 5.2 and Fable 5.2 Fast are generally available through the Global Standard and US DataZone deployment types in Microsoft Foundry.
Claude Mythos 5.2 and Mythos 5.2 Fast access is limited to customers authorized through Anthropic's verification programs, reached by contacting the Microsoft account team.
Fable 5.2 pricing: $8 per million input tokens, $40 per million output tokens, $0.20 per million cache-read tokens and $10 per million cache-write tokens.
Fable 5.2 Fast pricing: $16 per million input tokens, $80 per million output tokens, $0.40 per million cache-read tokens and $20 per million cache-write tokens.
Mythos 5.2 is positioned for cybersecurity and life-sciences use cases, with added misuse-mitigation safeguards.

What it means for builders

The release gives Azure AI Foundry developers direct, priced access to Anthropic's newest coding and security-focused models, alongside the existing GitHub Copilot and Vercel AI Gateway rollouts, widening where teams can deploy Fable 5.2. Microsoft describes Fable 5.2 as able to work through engineering challenges over hours to days while managing multiple sub-agents.

Availability and access

Both Fable 5.2 models are discoverable through the Foundry model catalog at ai.azure.com and can be used immediately under the Global Standard and US DataZone deployment types. Mythos 5.2 access requires going through Anthropic's verification process and coordinating with the Microsoft account team before deployment.

Sources

Claude Fable 5.2 and Mythos 5.2 bring frontier intelligence to Microsoft Foundry (Microsoft Tech Community (Azure AI Foundry Blog), November 9, 2026, official)

Written with AI assistance, strictly from the sources listed above. Before it went live, automated checks verified its dates, sources and every language edition.