# Supported models
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You can use the Messages API with the following Anthropic Claude models.
+ Anthropic Claude Opus 4.5
+ Anthropic Claude Opus 4.1
+ Anthropic Claude Opus 4 
+ Anthropic Claude Sonnet 4.5 
+ Anthropic Claude Haiku 4.5 
+ Anthropic Claude Sonnet 4 
+ Anthropic Claude 3.7 Sonnet 
+ Anthropic Claude 3.5 Sonnet v2 
+ Anthropic Claude 3.5 Sonnet 
+ Anthropic Claude 3 Opus 
+ Anthropic Claude 3 Sonnet 
+ Anthropic Claude 3 Haiku 
+ Anthropic Claude 2 v2.1 
+ Anthropic Claude 2 v2 
+ Anthropic Claude Instant v1.2