Anthropic released Claude Fable 5, its most capable public model to date, across major platforms including AWS, Google Cloud, and Microsoft Azure. The release introduces built-in control layers such a…
Anthropic released Claude Fable 5 and Claude Mythos 5 on June 9, 2026, both belonging to a new "Mythos-class" tier above the Opus class in capability. The two models share the same underlying architec…
Anthropic has released Claude Fable 5, the first model in the new Claude 5 family and part of a Mythos-class tier above Claude Opus. Claude Fable 5 is the most intelligent generally available model wi…
Anthropic implemented silent safeguards in its Claude Fable 5 model that secretly degrade responses to queries about competing AI development, including ML accelerator design and pretraining pipelines…
Anthropic released Claude Fable 5 at $10 per million input tokens and $50 per million output tokens, positioning the model in the premium tier for high-capability reasoning tasks. The model is current…
AI labs Anthropic and OpenAI are shifting from flat-rate subscriptions to usage-based billing, with Anthropic's Claude Fable 5 launching at $10 per million input tokens and $50 per million output. Git…
Claude Fable 5 leads GPT 5.5 in coding benchmarks, long-horizon tasks, and multi-step reasoning, making it the stronger choice for agentic workflows and production use cases. GPT 5.5 excels in multimo…
Anthropic's Claude Fable 5 model automatically routes biology, cybersecurity, and distillation queries to Opus 4.8 for deeper evaluation, introducing a more aggressive safety classifier than previous …
Anthropic launched Claude Fable 5 and Claude Mythos 5, raising security and compliance concerns. A supply chain attack via compromised Microsoft GitHub infrastructure targeted AI coding agent users, b…
Anthropic released Claude Fable 5 and Claude Mythos 5, two new large language models with a 1 million token context window and 128,000 maximum output tokens, priced at $10 per million input tokens and…
The Trump administration issued an AI memorandum asserting the right to use any AI models for national security without vendor interference, while OpenAI released a plan for AGI safety calling for int…
Simon Willison released version 0.32a3 of his LLM command-line tool on June 9, 2026, with the new release almost entirely written by Anthropic's Claude Fable 5 model. The update adds features to both …
Anthropic released Claude Mythos 5, the most powerful AI model in the world by every major benchmark, but standard users will not have direct access to it. Instead, consumers will use Claude Fable 5, …
Anthropic released Claude Fable 5, the same underlying model as the previously withheld Mythos, to Pro subscribers on June 22, 2025, at double the price of Opus 4.8. The model includes classifiers tha…
Anthropic gave stripe early access to Fable 5, which migrated a 50 million line Ruby codebase in one day — a task that would have taken a full engineering team over two months. The model Anthropic act…
Simon Willison reverse-engineered the AgentsView tool to set a custom price for the newly released Claude Fable 5 model, which was not yet included in the platform's pricing database. The workaround a…
Anthropic launched Claude Fable 5, its most powerful and autonomous AI model to date, now available in Kilo. The model can independently self-prompt, browse, write code, test outputs, and navigate ope…
Anthropic released Claude Fable 5, the first publicly available version of its Mythos model, which University of Pennsylvania AI researcher Ethan Mollick used to generate fully playable video games fr…
Anthropic released Claude Fable 5, its most capable Mythos-class model, on Snowflake Cortex AI in private preview on the same day as the launch. The model is designed for complex, multi-step enterpris…
Anthropic released Claude Fable 5 on Tuesday, its first "Mythos-class" model, but restricted its ability to answer queries on cybersecurity, biology, and chemistry to prevent malicious use. The public…