OpenAI
GPT-5, GPT-4, and o-series reasoning models
Anthropic
Claude 4 Opus, Sonnet, and Haiku
Gemini 3 and 2.5 series
xAI
Grok 4 and Grok 4 Fast
TogetherAI
Open-source models via TogetherAI
Groq
Ultra-low latency via Groq LPU
Fireworks
Open-source models via Fireworks
Scoring
Each model is rated on two axes using a 1-5 scale:- Reasoning — depth of analytical and chain-of-thought capability
- Speed — relative latency and throughput for its class