OpenAI's o1 and o3 models represent a new paradigm: AI that reasons before it responds, dramatically improving performance on complex tasks.
Key Differences from GPT-4
- Spends time 'thinking' before answering — visible as a reasoning trace
- Far superior at mathematics, coding competitions, and scientific reasoning
- Slower and more expensive per query
- Not always better for simple conversational tasks
o3 scored near human expert level on the ARC-AGI benchmark, a milestone in AI capability.
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