The 10 most important AI stories of April 13, 2026, hand-curated from the day's coverage. Every story links to its primary source.
In an internal memo, OpenAI's new revenue chief pointed to the artificial intelligence company's ongoing effort to reduce its reliance on Microsoft.
Hayden Field /The Verge:Internal memo: OpenAI Chief Revenue Officer says Anthropic is “grossing up rev share with Amazon and Google” and overstating its “run rate by roughly $8B”— OpenAI's chief revenue officer, Denise Dresser, sent a four-page memo to employees on Sunday …
Leading banks, insurers and exchanges to be warned over cyber security vulnerabilities exposed by Claude Mythos
Divergence reflects company’s recent rapid growth owing to strong interest in its Claude Code products
AI Security Institute:Cybersecurity analysis: Claude Mythos Preview had a 73% success rate on expert-level capture-the-flag challenges, which no model could finish before April 2025— The AI Security Institute (AISI) conducted evaluations of Anthropic's Claude Mythos Preview (announced on 7th April) to assess its cybersecurity capabilities.
Anthropic rolled out the new Mythos AI model to a select group of companies over concerns that hackers could exploit its capabilities.
Thefeudbetween Elon Musk and OpenAI is getting even more contentious as the two sides get ready for trial later this month. The latest development in the legal back-and-forth saw OpenAI accuse Elon Musk and his latest proposals as a "legal ambush," as first reported byBloomberg. OpenAI filed its response on Friday, which detailed that Musk was "sandbagging the defendants and injecting chaos into the proceedings, while trying to recast his public narrative about his lawsuit."Thelawsuitdates back ...
In February, the company said it would make London its largest research hub outside of the U.S.
Top models including OpenAI and DeepSeek make judgments too quickly when patient data is incomplete
Aaron Holmes /The Information:Microsoft says it is “exploring the potential of technologies like OpenClaw in an enterprise context”, including a team of always-on agents within Microsoft 365— As Microsoft faces growing competition for business customers from Anthropic, it is developing new features …
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