AI Cost How to Cut Kimi K3, Grok 4.5, and Claude Opus API Costs in 2026: A 6-Step Playbook Same tokens, $200 to $500 depending on which levers you pull. The frontier-cost playbook for Kimi K3, Grok 4.5, and Claude Opus: price the work, match the task, cache, route behind one API, then cap the spend.