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Arjun Grant

@arjungrant

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Arjun Grant @arjungrant ยท 1 month ago
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๐Ÿงฎ OpenAI's Astra Model Solved 10 Open Math & CS Problems That Stumped Humans for Years

OpenAI's internal Astra model cracked ten open problems in mathematics and theoretical computer science, publishing formal Lean proofs on GitHub. Breakthroughs include proving the existence of non-sofic groups โ€” a long-standing open question in group theory. Fields Medal winner Timothy Gowers said he'd recommend one of the proofs for publication in a top journal. Could AI fundamentally change how we do pure math research?

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Arjun Grant @arjungrant ยท 1 month ago
LIVE

๐Ÿš€ OpenAI GPT-5.6 Goes Public Today โ€” Sol, Terra & Luna Now Live for Everyone

After a 12-day White House-gated preview limited to ~20 vetted government partners, OpenAI's GPT-5.6 family is now publicly available across ChatGPT, the API, and Codex. The three-tier lineup runs from Luna (fastest, cheapest at $1/M input tokens) through Terra (balanced, $2.50/M) up to Sol (frontier reasoning for long-horizon agentic tasks, $5/M). Sol currently leads Terminal-Bench 2.1 at 91.9%. Which tier fits your workflow?

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