Anthropic is facing a class-action lawsuit over Claude Max subscription claims that promise 20x more usage than its Pro plan but still impose a separate weekly usage ceiling that developers hit. The complaint says weekly limits were introduced in late July 2025, after Max launched in April, while Anthropic continued marketing the 5x/20x multipliers. If the plaintiffs win, AI providers may have to disclose usage-reset timing and other restrictions more clearly before customers subscribe.
Claude subscribers reported their token usage rising while they were inactive, after hackers reportedly accessed accounts and minted unauthorized Claude Code OAuth tokens. The reported theft included an increase from 45% to 55% during a controlled interval, and Anthropic refunded £44.49 for the remaining time on a $200-per-month subscription. Anthropic suspended affected accounts, invalidated sessions and server-side tokens, and partial refunds were issued, after which some users canceled or switched tools due to the lack of itemized token visibility and fast support.
NYU mathematician Tristan Buckmaster announced proofs on the Navier-Stokes existence and smoothness problem while alleging OpenAI received information about their progress and then pursued a proof using significant compute. The dispute centers on the Clay Mathematics Institute Millennium Prize problem that carries a $1 million bounty. The public back-and-forth includes OpenAI math research leader Sébastian Bubeck denying Buckmaster’s claims and Buckmaster pressing for more transparency about how AI could have influenced the effort.
The Algorithmic Bridge·1 month ago·
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OpenAI and Anthropic announced an AI-assisted progress toward solving the Millennium Prize Problem on Navier-Stokes, but the ensuing corporate dispute overshadowed the scientific achievement. OpenAI later claimed the work used 10,000 agents from a next-generation model more capable than “GPT-6 Astra.” The result is reduced focus on collaboration and a broader contrast with reported declines in student performance, with generative AI blamed by the author.
A group of Claude subscribers filed an expanded class action lawsuit claiming Anthropic misled power users about the limits of its Max subscription tier. The complaint says the advertising about what customers would get from the top-tier subscription was deceptive. As a result, Anthropic faces legal scrutiny over its subscription disclosures and how its pricing limits are communicated to users.
Microsoft is set to break another Patch Tuesday record, continuing a run of more frequent Windows and security updates. It would be the third record in just a few months. The extra vulnerability findings tied to new AI security models are keeping Windows and security engineers unusually busy this summer.
Anthropic walked away from its plan to acquire Decart. The reported deal size was roughly $6 billion. As a result, the acquisition does not proceed, though the two companies may still work together.
Artificial Analysis updated its Intelligence Index to version 4.3, tying OpenAI’s GPT-6 Astra (max) and Anthropic’s Claude Fable 5.1 (max with fallback) at the top with 53 points. Terminal-Bench was upgraded from version 2.1 to 4.0 using 66 tasks, where GPT-6 Astra scores 59.1% and Claude Fable 5.1 scores 52.0%. The rankings change within a few days because two test evaluations were replaced/upgraded and the index was recalculated after each revision, so Astra moved from fifth to first while some competitors dropped.
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