Claude 3 Opus
Best-in-class reasoning and long-context analysis.
Traffic: 180M/mo
Funding: $7.3B
Dominates complex multi-step problem solving.
Rankings
Top AI Reasoning Models of 2025
AI systems optimized for logic, long-context reasoning, and structured analysis.
Updated 2025-Q1•5 criteria
Reasoning qualityBenchmark performanceContext lengthAdoption trendsExpert evaluation
ChatGPT o-series
General reasoning + multimodal synthesis.
Traffic: 5.8B/mo
Funding: $17B
Most widely used reasoning model globally.
Gemini Ultra
Google’s high-parameter reasoning model.
Traffic: 1B+ installs
Funding: Google
Excels in tool use and grounded search reasoning.
DeepSeek-R1
Precision reasoning with efficient scaling.
Traffic: 300M/mo
Funding: $500M+
Surprisingly strong performance per parameter.
xAI Grok 2
Fast real-time reasoning over X data.
Traffic: 200M/mo
Funding: $1B+
Strong at real-time knowledge synthesis.
Llama 3 (Meta)
Open-source reasoning model.
Traffic: 150M/mo
Funding: Meta
Most adopted open-source LLM globally.
Mistral Large
European reasoning-forward LLM.
Traffic: 30M/mo
Funding: $450M
Strong performance per token cost.
Cohere Command R
Enterprise reasoning for factual tasks.
Traffic: 12M/mo
Funding: $445M
Evaluation leader in grounded reasoning.
Anthropic Haiku
Fast reasoning with low latency.
Traffic: 120M/mo
Funding: $7.3B
Best balance between speed and accuracy.
OpenAI Embedded Reasoning Models
Small-footprint reasoning for real-time apps.
Traffic: 50M/mo
Funding: $17B
Powering most agentic systems behind the scenes.