GPT-4o vs Claude 4.5 Haiku

Detailed comparison of capabilities, features, and performance.

GPT-4o

GPT-4o

OpenAI
VS
Claude 4.5 Haiku

Claude 4.5 Haiku

Anthropic
Feature GPT-4o Claude 4.5 Haiku
AI Lab OpenAI Anthropic
Context Size 128,000 tokens 200,000 tokens
Max Output Size 4,096 tokens 64,000 tokens
Frontier Model Yes No
Vision Support Yes Yes
Description The Omni model from OpenAI that reasons across audio vision and text The latest Claude 4.5 Haiku model from Anthropic with a 1M token context window.

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