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long‑horizon models

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Machine Heart
Machine Heart
Aug 1, 2026 · Artificial Intelligence

OpenAI’s New Astra Model Leaked: What We Know

OpenAI is reportedly preparing a new long‑horizon model called Astra, positioned alongside Sol, Terra and Luna, with enhanced multi‑agent coordination and safety concerns that have already sparked internal testing, regulatory review, and widespread speculation about its size, capabilities, and release timeline.

AI agentsAstraOpenAI
0 likes · 7 min read
OpenAI’s New Astra Model Leaked: What We Know
Machine Heart
Machine Heart
Jul 24, 2026 · Artificial Intelligence

Fields Medalist Joins OpenAI to Tackle AI Safety Challenges

Jacob Tsimerman, a newly crowned Fields Medalist, announced his move to OpenAI to focus on AI safety, linking his deep work on the André–Oort conjecture and o‑minimality with OpenAI's long‑horizon model safety research and the emerging need for mathematically rigorous verification methods.

AI safetyAndré-Oort conjectureContainment Verification
0 likes · 9 min read
Fields Medalist Joins OpenAI to Tackle AI Safety Challenges