name = "Claude Sonnet 4.5" description = "Balanced Claude model for coding, analysis, agent workflows, and cost control" family = "claude-sonnet" release_date = "2025-09-29" last_updated = "2025-09-29" attachment = true reasoning = true temperature = true tool_call = true knowledge = "2025-07-31" open_weights = false [limit] context = 200_000 output = 64_000 [modalities] input = ["text", "image", "pdf"] output = ["text"]