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claude-sonnet-4.5
Detailed information about claude-sonnet-4.5 AI model
At a glance
Modalities
Context window
1,000,000
Pricing
$3.00$15.00
Capabilities
Tool Calling
Connect the model to external tools and systems.
Reasoning
The model thinks before responding.
Pricing Details
Input
Tokens
$3.00/1M tokens
Cache read
$0.30/1M tokens
Cache write
$3.75/1M tokens
Output
Tokens
$15.00/1M tokens
Other Costs
Web search
$0.01
Model Owner
Available Providers
Anthropic
anthropic/claude-sonnet-4.5
Released on 9/29/2025