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O3‑Pro Is Here: OpenAI’s Smartest Reasoning Model Yet: Revision history

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6 December 2025

  • curprev 07:1407:14, 6 December 2025 PC talk contribs 3,240 bytes +3,240 Created page with "500px Meet O3‑Pro! On June 10, 2025, OpenAI introduced O3‑Pro, an enhanced and “souped‑up” version of its flagship O3 reasoning model. Positioned as the most capable model yet, it’s now available via the developer API, ChatGPT Pro, and Team tiers, replacing the older O1‑Pro. What Makes O3‑Pro Special? 1. Step‑by‑step reasoning Like O3, O3‑Pro employs a “private chain of thought” — its internal deliberation mec..."
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