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Reasoning models (o1/o3)

Modelli di ragionamento (o1/o3)

Reasoning models such as OpenAI's o1 and o3 are a class of language models designed to tackle complex problems by spending more compute on thinking before answering. Unlike standard models that produce an immediate reply, these models generate a long internal chain of thought, breaking the problem into intermediate steps, checking assumptions and self-correcting. This markedly improves performance in mathematics, programming, logic and scientific tasks, where a single wrong step ruins the whole result. Processing time and cost are higher because reasoning consumes more tokens.

Definition

They are used where accuracy matters more than speed: technical analysis, proofs, advanced debugging. Several providers have adopted similar approaches, making extended reasoning increasingly common.

Related terms

• GPT-4 / GPT-5
• Qwen
• Llama 3
• OpenRouter
• Ollama (local models)

More in AI Models

• ChatGPT
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• Copilot
• Mistral
• Llama
• Claude
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• DeepSeek

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