Rumors I’ve been hearing. I’ll start with OpenAI, then Anthropic.OpenAI: The internal model’s reasoning jump comes from more aggressive RL, including training in games and simulated environments. Strategies learned there transfer to research mathematics and other fields.…— imjustnewatai (@imjustnewatai) October 28, 2026
OpenAI’s math breakthrough played to AI’s strengths
I tried to explain OpenAI’s solution more clearly than OpenAI did.
OpenAI to release open-source model as AI economics force strategic shift
OpenAI plans to release its first open-weight AI model since 2019 as economic pressures mount from competitors like DeepSeek and Meta, marking a significant strategic reversal for the company behind ChatGPT.
Research acceleration: The view inside OpenAI
Inside OpenAI, coding agents are reshaping AI research. Explore early data on agent usage, experiment velocity, task complexity, and research acceleration.
Distorted Intelligence at the AI Frontier
Daron Acemoglu offers a novel explanation for why OpenAI and Anthropic’s most advanced models have been going rogue.
Training Agentic Reasoners — Will Brown, Prime Intellect
Read OpenAI’s latest internal memo about beating the competition — including Anthropic
The memo directly mentioned OpenAI’s intensifying competition with Anthropic.
OpenAI co-founder Andrej Karpathy joins Anthropic's pre-training team | TechCrunch
Pre-training is responsible for the large-scale training runs that give Claude its core knowledge and capabilities, according to the company. It's also one of the most expensive, compute-intensive phases of building a frontier model.
Anthropic has caught up to OpenAI in image understanding
But neither one is all that good.
OpenAI are quietly adopting skills, now available in ChatGPT and Codex CLI
One of the things that most excited me about Anthropic’s new Skills mechanism back in October is how easy it looked for other platforms to implement. A skill is just …
OpenAI's open source LLM is a reasoning model, coming Next Thursday!
1.1K votes, 257 comments. 756K subscribers in the LocalLLaMA community. Subreddit to discuss locally hostable AI.
AI #178: A Fire Alarm For General Intelligence
The story that matters most this week is that OpenAI’s internally deployed models have severe alignment problems, including repeatedly breaking out of their sandboxes, and in one case sending a swarm of agents that broke into HuggingFace in order to steal the answers to the benchmark ExploitGym.
Former Tesla AI boss Andrej Karpathy is joining Anthropic.
Karpathy, who had also been on the founding team of OpenAI, says he will be working on R&D at Anthropic. Previously, he had been working on “new kind of school that is AI native,” and he says he’s still “deeply passionate about education” and plans to go back to it “in time.” [Image: A screenshot of an X post from Andrej Karpathy. https://platform.theverge.com/wp-content/uploads/sites/2/2026/05/Screenshot-2026-05-19-at-8.38.56AM.png?quality=90&strip=all]
OpenAI launches AI model GPT-Rosalind for life sciences research
OpenAI on Thursday introduced an artificial intelligence model touting increased biology knowledge and scientific research capabilities, as the startup deepens its push into the life sciences field.
OpenAI’s latest math breakthroughs commit research misconduct, experts say
OpenAI released 10 AI-generated results over the weekend. Some mathematicians are unhappy with their approach
gpt-oss:20b
OpenAI’s open-weight models designed for powerful reasoning, agentic tasks, and versatile developer use cases.
Labs are struggling to keep frontier models under control
OpenAI and Anthropic may have accidentally trained models to get better at hacking.
