2025-03-18
OpenAI's post-training chief William Fedus departs to launch science startup
William Fedus, who served as Vice President of Post-Training at OpenAI, has announced his departure from the company to pursue AI applications in scientific research.
The article OpenAI's post-training chief William Fedus departs to launch science startup appeared first on THE DECODER.
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2025-11-10
Baseten takes on hyperscalers with new AI training platform that lets you own your model weights
Baseten, the AI infrastructure company recently valued at $2.15 billion, is making its most significant product pivot yet: a full-scale push into model training that could reshape how enterprises wean [...]
2025-12-11
Nous Research just released Nomos 1, an open-source AI that ranks second on the notoriously brutal Putnam math exam
Nous Research, the San Francisco-based artificial intelligence startup, released on Tuesday an open-source mathematical reasoning system called Nomos 1 that achieved near-elite human performance on th [...]
2025-12-02
Arcee aims to reboot U.S. open source AI with new Trinity models released under Apache 2.0
For much of 2025, the frontier of open-weight language models has been defined not in Silicon Valley or New York City, but in Beijing and Hangzhou.Chinese research labs including Alibaba's Qwen, [...]
2025-10-01
Thinking Machines' first official product is here: meet Tinker, an API for distributed LLM fine-tuning
Thinking Machines, the AI startup founded earlier this year by former OpenAI CTO Mira Murati, has launched its first product: Tinker, a Python-based API designed to make large language model (LLM) fin [...]
2025-12-17
AI agents fail 63% of the time on complex tasks. Patronus AI says its new 'living' training worlds can fix that.
Patronus AI, the artificial intelligence evaluation startup backed by $20 million from investors including Lightspeed Venture Partners and Datadog, unveiled a new training architecture Tuesday that it [...]
2025-10-09
Nvidia researchers boost LLMs reasoning skills by getting them to 'think' during pre-training
Researchers at Nvidia have developed a new technique that flips the script on how large language models (LLMs) learn to reason. The method, called reinforcement learning pre-training (RLP), integrates [...]
2025-11-19
Meta’s DreamGym framework trains AI agents in a simulated world to cut reinforcement learning costs
Researchers at Meta, the University of Chicago, and UC Berkeley have developed a new framework that addresses the high costs, infrastructure complexity, and unreliable feedback associated with using r [...]
2025-10-03
OpenAI's DevDay 2025 preview: Will Sam Altman launch the ChatGPT browser?
OpenAI will host more than 1,500 developers at its largest annual conference on Monday, as the company behind ChatGPT seeks to maintain its edge in an increasingly competitive artificial intelligence [...]