AI BRIEFING · 2026-04-13

OpenAI touts Amazon alliance in memo

plus 9 more stories

Also: Internal memo: OpenAI Chief Revenue Officer says Anthropic, and UK financial regulators rush to assess risks of Anthropic’s latest AI model. Every story links to its primary source.

Curated by Gaurav · April 13, 2026

05

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 (AI Security Institute)

TechMeme ↗

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.

07

OpenAI says Elon Musk is orchestrating a last-minute 'legal ambush' before trial

Engadget ↗

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 ...

10

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 (Aaron Holmes/The Information)

TechMeme ↗

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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