Claude 4.5 Sonnet vs GPT-4o

Detailed comparison of capabilities, features, and performance.

Claude 4.5 Sonnet

Claude 4.5 Sonnet

Anthropic
VS
GPT-4o

GPT-4o

OpenAI
Feature Claude 4.5 Sonnet GPT-4o
AI Lab Anthropic OpenAI
Context Size 1,000,000 tokens 128,000 tokens
Max Output Size 64,000 tokens 4,096 tokens
Frontier Model Yes Yes
Vision Support Yes Yes
Description The latest Claude 4.5 Sonnet model from Anthropic with a 1M token context window. The Omni model from OpenAI that reasons across audio vision and text

Try both models in your workspace

Access both Claude 4.5 Sonnet and GPT-4o in a single workspace without managing multiple API keys.

Create your workspace