Anthropic launched Claude Haiku 5.5, its smallest and cheapest model, with adjustable reasoning effort and adaptive thinking enabled by default. It costs $0.10 per million input tokens and $0.50 per million output tokens for prompts up to 100K tokens.
Claude is available in beta through a Google Workspace Marketplace add-on and connectors, enabling document editing, spreadsheet formulas and analysis, and slide creation while preserving existing Google sharing permissions.
Anthropic expanded its Claude startup program, with applicants reportedly receiving acceptance decisions within minutes.
OpenAI released 722 mathematics papers organized into 372 result families, claiming they solve or advance major open problems. The release includes a claimed proof of the quasi-Riemann hypothesis and 162 papers with results formalized in Lean.
OpenAI enabled text watermarking for ChatGPT and Codex in the EU using its textGrain technique, which embeds an invisible statistical signal in word choice. API watermarking is available globally as an opt-in, and approved researchers can apply for detector access.
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