Claude 4.5 Sonnet (thinking) vs Claude 4 Opus
Detailed comparison of capabilities, features, and performance.
Feature
Claude 4.5 Sonnet (thinking)
Claude 4 Opus
Model Image
AI Lab
Anthropic
Anthropic
Context Size
1,000,000 tokens
200,000 tokens
Max Output Size
200,000 tokens
64,000 tokens
Frontier Model
Yes
Yes
Vision Support
Yes
Yes
Description
The latest Claude 4.5 Sonnet model from Anthropic with maximum reasoning enabled, 200k reasoning tokens in 1M context.
The latest Opus 4 model from Anthropic
Learn more about Claude 4.5 Sonnet (thinking)
View detailed specifications and capabilities
View model details →Learn more about Claude 4 Opus
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