Meta confronts the FTC in an antitrust trial starting Monday that could force divestiture of Instagram and WhatsApp. The FTC alleges Meta monopolizes personal social networking, while Meta argues numerous competitors exist. Key executives including Zuckerberg are expected to testify. The case began in 2020 and continues despite political changes in Washington.

ChatGPT became the world's most downloaded app in March with 46 million new installs, surpassing Instagram and TikTok. This milestone coincided with significant upgrades to its image generation capabilities and AI voice features. Brand recognition may make it difficult for competitors like Claude and Grok to gain traction, despite strategic advantages.

Meta faced criticism for using an experimental Llama 4 Maverick version to achieve high scores on LM Arena. When the unmodified version was tested, it ranked 32nd, below competitors like GPT-4o and Claude 3.5 Sonnet. Meta admitted their experimental model was optimized for conversationality, which worked well with LM Arena's human rating system.

Safe Superintelligence (SSI), led by OpenAI co-founder Ilya Sutskever, has secured an additional $2 billion in funding at a $32 billion valuation. This follows a previous $1 billion raise. Sutskever founded SSI with Daniel Gross and Daniel Levy after leaving OpenAI in May 2024. The company aims to develop a safe superintelligence, though its product remains in development.

ByteDance has announced Seed-Thinking-v1.5, a new reasoning AI model built on Mixture-of-Experts architecture. The model outperforms DeepSeek R1 and approaches Gemini 2.5 Pro and OpenAI's o3-mini-high on benchmarks. It features innovations in reinforcement learning, training data curation, and infrastructure while prioritizing structured reasoning for both STEM and general domains.