Claude Fable 5 is back — live worldwide from July 1

Quick summary

• The US lifted export controls on Fable 5 and Mythos 5 on June 30; Fable 5 returned worldwide on July 1.
• It's live on the Claude platform, Claude.ai, Claude Code, and Cowork; cloud (Bedrock, Vertex, Foundry) is being re-enabled in stages.
• Update: the all-plans window (up to 50% of weekly limits) ran through July 19 after two extensions. Since July 20 the plans split — Max and Team Premium keep Fable 5 in-plan; Pro and Team Standard move to usage credits with a one-time $100 credit.
• Mythos 5 is back only for vetted US organizations. Anthropic also launched Claude Sonnet 5, a cheaper agentic model.

What happened

On June 12, the US government applied export controls to Claude Fable 5 and Mythos 5 after Amazon researchers reported a jailbreak that got Fable 5 to identify software vulnerabilities and, in one case, produce exploit code. Because Anthropic couldn't restrict access by nationality in real time, it suspended both models for everyone. Eighteen days later, on June 30, the government lifted the controls, and Anthropic began redeploying Fable 5 worldwide on July 1.

How to access it

Fable 5 is back on the Claude platform, Claude.ai, Claude Code, and Claude Cowork for Pro, Max, Team, and eligible Enterprise plans. Anthropic says it is re-enabling access on AWS Bedrock, Google Cloud, and Microsoft Foundry as quickly as possible. There is no separate 'free Fable 5' — it's part of your paid Claude plan.

The catch: a 50% cap, now split by plan

Fable 5 counts for up to 50% of your weekly usage limit. The all-plans window was set to close July 7, then July 12, then July 19 after two extensions. Since July 20 the tiers split: Max and Team Premium keep Fable 5 in-plan (up to 50% of weekly limits, permanent per Anthropic), while Pro and Team Standard bill through usage credits rather than plan limits, cushioned by a one-time $100 credit. The costs and decision rules live in the usage-limits guide.

Mythos 5 is still US-only

Mythos 5 — the less-restricted sibling that shares Fable 5's underlying model — is back only for a set of vetted US organizations that defend critical infrastructure, following a separate government approval on June 26. It is not available to the general public.

Anthropic also shipped Sonnet 5

Alongside the restoration, Anthropic launched Claude Sonnet 5, positioned as a cheaper way to run agents. It's the default model for Free and Pro, priced at $2 / $10 per million tokens (in / out) through August 31, and closes much of the agentic-coding gap to Opus 4.8 at roughly 40–60% less cost. For cost-sensitive work, it's worth weighing next to the open-weight GLM-5.2.

Do you still need an alternative?

If you switched to GLM-5.2, Opus 4.8, or another model during the outage, you don't have to switch back. GLM-5.2 is open-weight and still far cheaper than Fable 5, and Sonnet 5 is a cheaper agentic option in the Claude family. The right choice is task-based: compare on your actual work, not the brand.

From the Field Guide

Stop guessing which model to use

Weekly verified workflows for the credits era: which model in which seat, what it costs per task, and copy-ready prompts — plus an 8-runbook Starter Pack you can download once and keep. Every claim checked against published pricing, sources shown.