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- Anthropic’s Claude Fable 5 brings “safe” Mythos-class AI to public
Anthropic’s Claude Fable 5 brings “safe” Mythos-class AI to public
Bay Area Times
June 10, 2026
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Top stories today:
- Anthropic’s Claude Fable 5 brings “safe” Mythos-class AI to public
- Google said to back $35B in Anthropic data center financing
- Gemini 3.5 Live Translate debuts with translation in 70+ languages
- OpenAI to pursue 10GW Ohio AI campus with NVIDIA backing
- SpaceX targets orbital AI computing by late 2027
- CoreWeave founders sell $2.3B+ in stock after IPO lockup ends
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Listen to our AI-generated podcast summarizing today’s newsletter (beware of hallucinations):
1. Anthropic’s Claude Fable 5 brings “safe” Mythos-class AI to public
Claude Fable 5 has emerged as the new top AI model on the Artificial Analysis Intelligence Index:
The model can’t be used for cyberattacks, Anthropic said.
Costs $10/$50 per 1M input/output tokens, <50% the price of Claude Mythos Preview, vs. Claude Opus 4.8’s $5/$25 and GPT-5.5’s $5/$30.
Uses conservative safety classifiers that switch to Claude Opus 4.8 in areas such as cybersecurity.
Includes invisible safeguards such as prompt modification, steering vectors, and PEFT to limit frontier-model development.
Available to Pro, Max, Team, and seat-based Enterprise plans through Jun. 22; usage credits required afterward.
Mythos 5 debuted for a limited group of industry partners with Fable 5 capabilities but without the guardrails.
Claude Fable 5 achieved the highest score on Artificial Analysis’ knowledge and hallucination benchmark
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3. Google said to back $35B in Anthropic data center financing
Anthropic will reportedly use Google-developed TPUs across 5 U.S. data centers.
Google is backstopping lease payments while supplying the chips Anthropic will use.
Broadcom is designing the chips used in the deal.
Apollo and Blackstone are providing financing.
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