Comportement Updated 2026-04

AI Reasoning

Definition

AI reasoning refers to a model's ability to break down a problem into logical steps to reach a conclusion, rather than answering instinctively.

See also in the glossary

L
LLM (Large Language Model)
An LLM is an AI model trained on billions of texts, capable of understanding and generating human language.
C
Chain of Thought
Chain of Thought is a prompting technique that asks the model to show its step-by-step reasoning before giving its final answer.
A
AI Agent
An AI agent is an autonomous system that uses an LLM to plan, decide and execute real tasks without human intervention at each step.
A
AI Benchmark
An AI benchmark is a standardized test that measures and compares AI model performance on specific tasks.

Tools that use ai reasoning

C
Claude
The AI that understands nuance, by Anthropic
4.7/5
C
ChatGPT
The world's most used conversational AI assistant
4.6/5
D
DeepSeek
The open source Chinese model rivaling GPT-4
4.7/5
P
Perplexity
The AI answer engine that cites its sources
4.5/5

Frequently Asked Questions

Which models are best at reasoning?
Claude Opus 4 and OpenAI o1/o3 lead in reasoning. DeepSeek R1 rivals them in open source. Reasoning is measured by MATH and ARC benchmarks.
Is AI reasoning reliable?
It's improving rapidly but still fallible. Reasoning models show their work (chain of thought), which allows verifying their logic.