GPT-5 mini vs Claude 4.5 Sonnet

Detailed comparison of capabilities, features, and performance.

GPT-5 mini

GPT-5 mini

OpenAI
VS
Claude 4.5 Sonnet

Claude 4.5 Sonnet

Anthropic
Feature GPT-5 mini Claude 4.5 Sonnet
AI Lab OpenAI Anthropic
Context Size 272,000 tokens 1,000,000 tokens
Max Output Size 128,000 tokens 64,000 tokens
Frontier Model No Yes
Vision Support Yes Yes
Description A faster, more cost-efficient version of GPT-5 for well-defined tasks and precise prompts. The latest Claude 4.5 Sonnet model from Anthropic with a 1M token context window.

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