Thinking Machines Lab Inc. today launched its Tinker artificial intelligence fine-tuning service into general availability.

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In interviews with Ars Technica this week, OpenAI employees revealed the extent to which the company now relies on its own AI ...

Subjected to my battery of 10 text tests and 4 image challenges, OpenAI's latest model barely edged out GPT-5.1. What are Plus subscribers actually paying for?