Anthropic released Claude Fable 5 with undisclosed distillation-prevention guardrails, prompting a public apology after Simon Willison exposed the hidden safeguards. Separately, a DN42 network adminis…
Anthropic released Claude Fable 5, its most capable model for sustained, complex reasoning, designed specifically for agentic workflows that require multi-step decision-making and tool orchestration. …
Anthropic released Claude Fable 5, its most capable publicly available model, as part of a new Mythos-class tier designed for complex, multi-step reasoning and agentic workflows. The model features an…
Claude Fable 5 autonomously hacked its own browser automation and screenshot capabilities to debug a horizontal scrollbar bug in Datasette Agent. The AI edited Datasette's templates to inject JavaScri…
Anthropic faced backlash after its June 10, 2026 launch of Claude Fable 5 and Mythos 5, when users discovered the AI models silently rerouted sensitive queries to an older, less capable model. The com…
Microsoft is restricting employee access to Anthropic's Claude Fable 5 after Anthropic introduced mandatory data retention rules tied to its safety classifiers, according to The Verge. Fable 5 is abse…
A new experiment testing Anthropic's Claude Fable 5 model on a Next.js coding task revealed that while the model successfully identified and fixed a cache invalidation bug, its failure modes have beco…
Anthropic's Claude Fable 5, its most capable model, is now available on the Roboflow platform for integration into production pipelines without API wiring. In Roboflow's Vision Evals, Fable 5 achieved…
Anthropic has released Claude Fable 5, the first model in its new Claude 5 family and part of a Mythos-class tier that surpasses Claude Opus in capability. The model shares its underlying architecture…
Anthropic released Claude Fable 5, a Mythos-class AI model, to the public this week with strong safety safeguards. Early analysis from Dawn Song's ALE benchmark shows Fable 5 performs similarly to GPT…
Anthropic released Claude Fable 5, calling it its most capable model and the new state-of-the-art for vision tasks, but independent benchmarks from Roboflow show the claim does not hold up on real-wor…
OpenAI is evaluating significant cuts to the prices it charges for AI tokens used in models such as ChatGPT, according to The Wall Street Journal. The discussions come days after OpenAI filed confiden…
Anthropic launched Claude Fable 5, its first publicly available Mythos-class model, on June 9, alongside an updated Claude Mythos 5 configuration. The company said Fable 5 excels at software engineeri…
Microsoft has blocked its own employees from using Anthropic's Claude Fable 5, the AI company's newest model, while its legal team reviews data retention policies that could keep sensitive corporate p…
Anthropic's Claude Fable 5, released June 9, introduces safety classifiers that can decline requests mid-task and a fallback system that retries them on Claude Opus 4.8, making mid-conversation model …
Anthropic released Claude Fable 5 and Claude Mythos 5, a pair of advanced AI models with enhanced safeguards, and published a system card detailing their training and testing. During evaluations, the …
Anthropic's new Claude Fable 5 model achieved middling results on 200 real-world vulnerability-fixing tasks, scoring 59.8% FuncPass and 19.0% SecPass despite high launch expectations. The model set re…
Simon Willison released Datasette 1.0a33, a significant alpha toward a stable 1.0 that extends the `?_extra=` pattern to cover queries and rows in addition to tables. The new JSON extras feature is no…
Anthropic's Claude Fable 5 model, launched June 9, is enabling users to clone popular games like Minecraft and Pokémon with a single text prompt in under an hour. One user recreated a Minecraft clone …
Anthropic and OpenAI both filed confidential S-1 drafts with the SEC in early June 2026, signaling a shift toward public accountability for frontier AI labs. Anthropic expanded its controlled-access P…