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GPT-5.5 matches Claude Mythos in cyber attack tests, UK AI Security Institute finds

The UK's AI Security Institute (AISI) has tested OpenAI's GPT-5.5 and found it reaches a similar level of cyberattack capability as Anthropic's Claude Mythos Preview. GPT-5.5 is only the second model ...
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Mistral's new flagship Medium 3.5 folds chat, reasoning, and code into one model

Mistral has released Medium 3.5, a 128-billion-parameter AI model that handles chat, reasoning, and coding tasks using a dense architecture, along with a toggleable reasoning feature for more complex ...
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Anthropic's new benchmark claims Claude can match human experts in bioinformatics

With BioMysteryBench, Anthropic wants to show that Claude can solve real bioinformatics problems at an expert level. The results are promising, but come with important caveats. That's why Anthropic ...
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Anthropic reviewing investor offers that would value the company at over $900 billion

Anthropic is reviewing investor offers for a new funding round that would value the AI company at over $900 billion, Bloomberg reports. That would let Anthropic overtake rival OpenAI as the world's ...
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OpenAI misses revenue targets as Anthropic and Google close in

OpenAI missed internal revenue and user targets for the first quarter of 2026, with fast-growing competition from Google and Anthropic as a key factor. Massive future spending commitments of around ...
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Google CEO says Pichai says people "love" AI Overviews and keep coming back to search more

Alphabet plans to invest up to 190 billion US dollars in AI and cloud infrastructure by 2026 to keep pace with surging demand for server and network services, with spending expected to rise further in ...
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OpenAI says old prompts are holding GPT-5.5 back and developers need a fresh baseline

OpenAI has released a prompting guide for GPT-5.5 with one major takeaway: don't reuse your old prompts. Start fresh with minimal, result-focused instructions. And role definitions, once dismissed as ...
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China blocks Meta's $2 billion acquisition of AI startup Manus

China's economic authority NDRC is forcing Meta to unwind its already completed $2 billion acquisition of AI startup Manus. Reversing the deal is complicated since Meta has already integrated the ...
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Google Gemini now generates full documents, spreadsheets, and presentations directly inside the chat

Google Gemini can now create files in various formats directly in the chat and make them available for download. Users describe what they want through text prompts, specifying both the content and the ...
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Anthropic says stronger AI models cut better deals, and the losers don't even notice

In a week-long experiment, Anthropic let Claude agents buy and sell goods for employees. The result: stronger models negotiated better prices. The catch: the people stuck with weaker agents had no ...
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Meta wants to power AI data centers with solar energy from space

Meta has signed a deal with startup Overview Energy for up to one gigawatt of space-based solar power to feed the massive energy demands of its AI data centers. Satellites would collect sunlight in ...
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Sam Altman outlines five principles that double as justification for OpenAI's business decisions

OpenAI CEO Sam Altman has published five principles to guide the company's future work. They frame OpenAI's role as decentralizing power over AI through broad user access. The principles cover ...