AI Newsletter

Anthropic has officially released Claude Fable 5 as the public version of the Mythos base model – with substantial safety guardrails after the raw version fell under US export controls. Polymarket rates Anthropic with 94% probability as the holder of the best AI model by end of June 2026, an increase of 20.8% over the month. The launch signals that Anthropic is maintaining technological leadership in the model race despite regulatory constraints.

Mistral CEO Arthur Mensch has officially announced a new family of open-weight models for summer, with early access starting in July; according to leaks, this involves 'Mistral 4 Large' with sparse architecture. In parallel, Mistral is planning to build its own chips and has closed industrial partnerships with Airbus and BMW, while targeting 1 GW of compute capacity by 2029. This positions Europe's leading AI company as a serious competitor to OpenAI and Anthropic – including in the hardware space.

New figures show that OpenAI's losses in 2025 have risen to nearly eight times higher, with spending of 34 billion dollars – a massive indication of cost pressure in AI infrastructure. The community is intensely debating whether this is a structural problem of the industry or targeted growth investment; skeptics point to the absence of economy-wide productivity gains despite high investments (Business Insider). The findings sharpen the question about the sustainability of AI valuations ahead of the expected IPOs of OpenAI and Anthropic.

McKinsey and Deloitte confirm unanimously: 2026 marks the transition from AI experiments to the emergence of AI-native organizations with production-ready agent systems at the workflow level. Gartner predicts that 40% of all enterprise applications will contain task-specific AI agents by end of 2026. Nevertheless, Business Insider shows that economy-wide productivity gains have yet to materialize – the gap between adoption and measurable ROI remains the central unresolved problem.

Polymarket rates an Anthropic IPO by September 2026 with 78% probability, and 73% see Anthropic going public before OpenAI. Analyst commentary points to landmark IPO filings by both companies with trillion-dollar valuations, while OpenAI simultaneously struggles with massive losses. The combination of technological leadership, regulatory risks from US export controls, and unresolved profitability makes the upcoming IPOs the biggest stress test for the AI industry.