Anthropic's most powerful generally available model — a new tier above Opus, bringing Mythos-class capability to the public. Back online: access was restored worldwide on July 1, 2026 after the US lifted its June export-control directive.
The US Department of Commerce lifted its June 12 export-control directive on June 30, 2026, and Anthropic restored global access to Claude Fable 5 (and Claude Mythos 5) on July 1 — on the API, claude.ai, Claude Code, and Claude Cowork, with AWS, Google Cloud, and Microsoft Foundry following shortly after. API pricing is unchanged at $10/$50 per 1M tokens. On Pro, Max, Team, and select Enterprise plans, Fable 5 counts toward up to 50% of the weekly usage limit through July 12 (Anthropic extended this by five days on July 7, from the original July 7 cutoff); after that it draws on usage credits.
Fable 5, released June 9, 2026, is Anthropic's answer to a question they had been sitting on: how to ship the capabilities of Mythos — the internal frontier model that made headlines before release — in a form the public can actually buy. Fable 5 brings that capability tier to general availability, while the full Claude Mythos 5 stays in limited release through Project Glasswing. It is the first Claude model to sit above Opus in the lineup rather than replacing it.
At $10 input and $50 output per 1M tokens, it is the most expensive Claude by a factor of two — and Anthropic notes that's still half the price of the earlier Mythos Preview. The 1M context window matches GPT-5.5's and the rest of the Claude flagship line, and the 128K output ceiling is the largest Anthropic has shipped.
Three days after launch, the rollout stopped. On June 12, 2026, a US government export-control directive ordered Anthropic to suspend all access to Fable 5 (and the restricted Claude Mythos 5) for every user, after researchers reported a jailbreak technique that could get the model to identify software vulnerabilities and produce exploit code. Anthropic complied immediately while publicly disagreeing with the order. It then deployed an improved safety classifier that blocks the reported technique in over 99% of cases; the Commerce Department's Center for AI Standards and Innovation reviewed the safeguards and lifted the controls on June 30. Access was restored globally on July 1, 2026 — first on the Claude API, claude.ai, Claude Code, and Claude Cowork, with AWS, Google Cloud, and Microsoft Foundry access following shortly after. Opus 4.8 and the rest of the Claude lineup ran normally throughout.
Since the July 1 restoration, Fable 5 is included on Claude Pro ($20/mo), Max ($100–200/mo), Team, and select Enterprise plans — counting toward up to 50% of the weekly usage limit through July 12, 2026, a temporary cap to manage relaunch demand. On July 7 Anthropic extended this included window by five days (from the original July 7 cutoff), giving subscribers until July 12. After July 12, Fable 5 usage draws on usage credits instead (the same credits model originally planned for June 23). The API and consumption-based Enterprise plans have full access at the standard $10/$50 per-token rates.
Anthropic describes Fable 5's capabilities as exceeding any model it has ever made generally available, with state-of-the-art results on nearly all tested benchmarks — software engineering, knowledge work, vision, and scientific research in particular. Early testers consistently call it a clear step beyond Opus 4.8 on complex, long-horizon reasoning and autonomous problem-solving: the multi-hour agentic tasks where prior models drift.
One unusual design choice: requests touching restricted high-risk areas — cybersecurity, biology and chemistry, model distillation — are automatically routed to Opus 4.8 instead, with a notice when that happens. In practice you get an answer from a still-frontier model rather than a refusal. The familiar Claude caveat also applies: no image, video, or audio generation.
| Model | Input / 1M | Output / 1M | Context |
|---|---|---|---|
| Claude Fable 5 | $10 | $50 | 1M |
| Claude Opus 5 | $5 | $25 | 1M |
| Claude Sonnet 5 | $3 | $15 | 1M |
| GPT-5.5 pro | $30 | $180 | 1M |
| GPT-5.5 | $5 | $30 | 1M |
The pricing logic: Fable 5 costs 2× Opus 5 and roughly 2× GPT-5.5 — but sits at a third of GPT-5.5 pro's input rate and well under a third of its output rate, while claiming the stronger benchmark record. If your task runs fine on Opus 5 or Sonnet 5, stay there; reach for Fable 5 when the task is genuinely hard, long, or expensive to get wrong. Since July 24, 2026, that bar is higher: Opus 5 delivers nearly all of Fable 5’s intelligence at half the price — and even beats Fable 5’s best OSWorld 2.0 computer-use result at about a third of the cost.