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Tag: Anthropic (9 articles)

Anthropic's run-rate revenue hits $47 billion

Anthropic's annualized revenue has surged from $30 billion to $47 billion in just a few months, an unprecedented growth rate that reveals enterprise AI adoption is happening at an extraordinary speed.

Simon Willison · May 29, 2026

Discovering cryptographic weaknesses with Claude

Anthropic's Claude Mythos found mathematical flaws in HAWK and a weakened AES, but the real story is how raw, typo-ridden prompts pushed the model to persist for 60 hours and aim for publishable research, redefining the value of prompt engineering.

Simon Willison ·

Introducing Claude Opus 5

Anthropic launches Opus 5, delivering near-top-tier intelligence at half the cost of Fable 5, with self-iteration and tool-building capabilities that signal a new direction for agentic models.

Anthropic News ·

Policy on the AI Exponential

Anthropic proposes a two-part policy framework that would give governments authority to block high-risk AI deployments, setting clear thresholds to regulate only the most powerful models.

Anthropic News ·

Quoting Claude Opus 5 system prompt

Anthropic hardcodes export control suspension details into Claude Opus 5's system prompt, revealing how system prompts act as emergency interfaces for models to handle real-world policy changes.

Simon Willison ·