name = "Claude Opus 4.6" description = "High-end Claude for difficult coding, planning, and slower expert reasoning" family = "claude-opus" release_date = "2026-02-04" last_updated = "2026-03-13" attachment = true reasoning = true temperature = true tool_call = true structured_output = true knowledge = "2025-05-31" open_weights = false [[reasoning_options]] type = "effort" values = ["low", "medium", "high", "max"] [[reasoning_options]] type = "budget_tokens" min = 1_024 [cost] input = 5 output = 25 cache_read = 0.5 cache_write = 6.25 [limit] context = 1_000_000 output = 128_000 [modalities] input = ["text", "image", "pdf"] output = ["text"]