base_model = "anthropic/claude-opus-4-6" reasoning_options = [{ type = "effort", values = ["low", "medium", "high", "max"] }, { type = "budget_tokens", min = 1_024 }] [cost] input = 5 output = 25 cache_read = 0.5 cache_write = 6.25 [[cost.tiers]] tier = { type = "context", size = 200_000 } input = 10 output = 37.5 cache_read = 1 cache_write = 12.5 [provider] npm = "@ai-sdk/google-vertex/anthropic"