Claude 3.7 Sonnet vs Claude 4.5 Sonnet (thinking)

Detailed comparison of capabilities, features, and performance.

Claude 3.7 Sonnet

Claude 3.7 Sonnet

Anthropic
VS
Claude 4.5 Sonnet (thinking)

Claude 4.5 Sonnet (thinking)

Anthropic
Feature Claude 3.7 Sonnet Claude 4.5 Sonnet (thinking)
AI Lab Anthropic Anthropic
Context Size 128,000 tokens 1,000,000 tokens
Max Output Size 64,000 tokens 64,000 tokens
Frontier Model Yes Yes
Vision Support Yes Yes
Description The latest Sonnet 3.7 model from Anthropic The latest Claude 4.5 Sonnet model from Anthropic with maximum reasoning enabled, 200k reasoning tokens in 1M context.

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