Anthropic has released Claude Fable 5, the first model in its new Mythos class. It leads nearly every benchmark, including SWE-bench Verified at 95 percent, but costs twice as much as Opus 4.8 at 10 or 50 dollars per million tokens. Strict safety filters block about nine percent of requests, and a new 30-day data retention policy applies even to zero-data-retention contracts.

Anthropic said the new version, called Claude Fable 5, will have safeguards to prevent misuse in fields like cybersecurity.

Anthropic launched Claude Fable 5 on Tuesday, a Mythos-class model with safeguards blocking cybersecurity and biology queries, priced at $10 per million input tokens.

Anthropic has released a full version of its cybersecurity-centric Claude Mythos model—along with a safer version for the general public.

Anthropic first announced Mythos in April, which it called a "step change" in capabilities, but opted to tightly control its rollout.

Claude Fable 5 brings Mythos-class AI coding power to general users, but with cybersecurity guardrails, fallback models, and pricing that could make developers think twice.

Anthropic is releasing Claude Fable 5, its first Mythos-class model available to the public. The model comes with guardrails that block responses in high-risk areas like…

It says new safeguards make it possible to release a Mythos-class model it previously said was too risky to make public.

Anthropic is releasing Claude Mythos 5 to trusted organizations and Claude Fable 5 to the public, a version it says can’t be used for cyberattacks.

Anthropic launches Claude Fable 5, a Mythos-class AI model engineered with new safeguards that specifically restrict its use in cybersecurity.

Back in April, Anthropic unveiled its Claude Mythos AI model that it said was too powerful to publicly release. Instead,...

Anthropic is pricing both Fable 5 and Mythos 5 at $10 per million input tokens and $50 per million output tokens. The company says that is less than half the price of Claude…

Anthropic launched Claude Fable 5 with safeguards for high risk tasks while limiting Mythos 5 to trusted cyber partners.

Anthropic said it could not yet release the full Claude Mythos 5 model, so instead it created Fable 5 with baked in safeguards.

As AI models get more powerful, there’s also going to be a level of danger. Anthropic announced Mythos not long...

Anthropic ships two new models, Claude Fable 5 and Mythos 5, that claim to blow past the current Opus generation, especially in coding and research. Fable 5 finished a code…

Watch now | 🎙️Early access to Claude Fable 5: what Anthropic claims, what I tested, and my honest take

Anthropic apre al pubblico il primo modello Mythos-class. Le richieste su cybersecurity, biologia e distillazione vengono dirottate su Opus 4.8 in meno del 5% delle sessioni.…

Anthropic launched Claude Fable 5, its most capable consumer-facing AI model to date, but with a few guardrails.

Anthropic's most powerful model is now publicly available.

Today we’re launching Claude Fable 5: a Mythos-class model that we’ve made safe for general use.