Claude Sonnet 4.5
JSON →Anthropic's mid-tier Claude model balancing speed and capability for general-purpose tasks.
Specs
context window 200K tokens
max output 64K tokens
input price $3 / 1M tokens
output price $15 / 1M tokens
Capabilities
tool-usejson-modestreamingreasoningcode-generationfunction-callingprompt-cachingvision
Resources
homepagewww.anthropic.com ↗
API
full doc /v1/models/claude-sonnet-4-5