Liner Model API — Liner Mark 1.3 — Event History

First verified canonical record for Liner Model API liner-mark-1.3. Input $1.00/1M, output $5.00/1M, cached input $0.10/1M, 1,000,000-token context. NEW identity event, not PRICE DROP or PRICE RISE. Model versions are distinct stable IDs; alias liner-mark is excluded.