Best AI Frontier Models launches this week

Introducing Grok Bot, now in early beta. Bots are AI teammates that do real work for you. They sign in to your tools, use them just like you do, and come back with finished work. https://t.co/uyfA97yo98

Introducing Grok 4.6. It delivers frontier intelligence and is a significant improvement over Grok 4.5 at the same price. https://t.co/RtTbpXcb3a

Cursor is now part of @SpaceX. Today, we have officially closed our acquisition. We will join the @SpaceXAI team to help make Grok the world's most useful AI and improve Grok Build, Grok Bot, Grok API, Cursor, and more. SpaceX has built some of the most inspiring and

Introducing GLM-5.3: Built to Code. Ready for Cyber Defense. - Top-tier coding and agentic capabilities, achieved through post-training on the 743B base model - A major leap in cybersecurity, setting a new standard among open models Tech Blog: https://t.co/ekQkO83jCv https://t.co/y3Y2AB0wxr

Now in preview: The ChatGPT desktop app for Linux. Use ChatGPT, ChatGPT Work, and Codex where you already work and build, with your projects and browser workflows on supported Linux systems. https://t.co/OtsPt5N5QC

We’re expanding our cybersecurity initiative Daybreak and introducing GPT-5.6-Cyber, a new model for advanced, authorized cybersecurity work. As the threat landscape evolves, we’re putting frontier intelligence in the hands of trusted defenders before attackers can deploy https://t.co/6o3GtxCxRA

Today we are introducing Dyna-2, a world-action model pre-trained on one million hours of human video. At this scale, for the first time, we discovered several new scaling laws: • world-action models exhibit scaling law on human data across four orders of magnitude, from 1000 https://t.co/wZamR0axzS

You can now keep your work from other agents in sync with ChatGPT Work and Codex. Import projects, chats, skills, and plugins, review your import history, and opt in to automatic updates in Settings. Now available in the ChatGPT desktop app. https://t.co/G7OcCIvhj6

We've raised $1.1B to build AI that is owned and shaped by each of us. Check out the article published by the The New York Times that explains River AI's mission and where we're going next. Our first product is the River API which allows anyone to build custom agents and LLMs https://t.co/kKcDEDuUIz

Today, we’re coming out of stealth with TensorScale (@TensorScaleAI ), and we're already running the fastest video inference in the world. MiniMax (@MiniMax_AI ) H3 — one of the leading open video models — now runs 10x faster and at half the cost on our inference stack. I’m

Today, we're launching @belvedir_ai We're making private AI models cheap and easy so the world can have trillions of them. Private AI models are cheaper, better, faster, and protect your data from frontier labs, but they're still to expensive and difficult to make for startups https://t.co/tM60TO9LMi

Introducing LTX’s newest open-weight model for realtime avatars - available on Reactor day 0. We're proud to partner with @ltx_io to make it easier than ever to build lip-synced, fully-voiced AI personas at cinematic quality with our API. Try it here: https://t.co/Kp9btWWuQm https://t.co/ZR6vjur2s1

Today, we're announcing Markov (YC S26). We've built the most advanced CUA datasets for CAD, design, browser-use & more. We're working with frontier AI labs and our open-source datasets have crossed 150,000+ downloads on HuggingFace. Sample dataset below :) @markov__ai https://t.co/lVbJuXstZs

.@NVIDIA Nemotron 3.5 Lightning is now available in the Perplexity Agent API 🎉 An open 30B MoE model with 3B active parameters, built for the high-volume execution layer of always-on agents: tool calls, validation, and subagent work. Pair Nemotron Lightning 3.5 with frontier https://t.co/5QuTfxOObO

Today we’re launching Enact: post-training infrastructure that makes robotics models work in the real world. Robotics models fail when execution reaches states their training data never covered. A slip, an off-angle grasp, or an external disturbance can leave the policy without https://t.co/1DSZdq0Aqq