OpenAI is reportedly exploring legal options after feeling burned by Apple’s poorly promoted and designed ChatGPT integration, which insiders say has damaged the brand and fallen short of billion-dollar expectations. The AI company plans to delay any formal moves until after its antitrust lawsuit with Elon Musk concludes next week.

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OpenAI released 722 mathematical manuscripts, grouped into 372 result families, produced by an unreleased internal model. The papers are on GitHub, with Lean formalizations for many but not all of them, and OpenAI warns some unformalized results could have issues.
OpenAI has updated ChatGPT with an “Intelligent UI” that generates interactive visual elements alongside text answers. The change, powered by GPT-6, reaches paid users today and free users tomorrow and affects more than a billion users.
Anthropic released Claude Haiku 5.5, its cheapest and fastest small model, at $0.10 per million input tokens and $0.50 per million output tokens for prompts up to 100,000 tokens. Anthropic says it costs around 75% less to run than Haiku 4.5 on average and scores far higher on its benchmarks.
Meta and Microsoft are cutting employee use of Anthropic’s Claude AI and directing staff toward their own coding tools, The Information reported. The changes reflect tighter internal AI budgets while customer access to Claude through Microsoft platforms continues to expand.
Microsoft has introduced a local edition of MAI-Code-1.1-Flash that runs on Windows PCs without server access. The model requires substantial memory and is coming to GitHub Copilot in experimental preview by the end of October, starting with Nvidia RTX Spark PCs.