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OpenRouter Launches Prompt Caching + Sticky Routing, Reducing Multi-turn Agent Costs

Published: 2026-07-21 08:00 Source: OpenRouter: Announcements (RSS)

OpenRouter reduces token costs for multi-turn agents through Prompt Caching and Sticky Routing. Cache read prices are only 0.1x-0.5x of normal input, with Claude Sonnet 4.6 cache reads at $0.30/M (normal $3.00/M).

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