Claude model pricing

This fixture mirrors the shape of https://www.anthropic.com/pricing so the provider catalog refresh workflow has a deterministic source to ingest.

Claude pricing per million tokens
Model Input ($/MTok) Output ($/MTok) Cache read ($/MTok) Cache write ($/MTok) Context
claude-haiku-4-5-20251001 1.00 5.00 0.10 1.25 200000
claude-opus-4-7-20260301 20.00 100.00 2.00 25.00 200000
claude-haiku-5-20260601 0.50 2.50 0.05 0.625 250000