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Marcus Rowe
Editor-in-Chief at TechSifted. Honest, deeply-researched reviews of AI tools. Covering ChatGPT, Claude, Gemini, Midjourney, and 100+ AI prod
If o3 isn't available on your account at all: you need ChatGPT Plus or Pro. That's the most common cause. If it's available but broken, read on. ChatGPT o3 is OpenAI's current flagship reasoning model — the one you use when you need it to actually t...
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