product · May 20, 2026
OpenRouter Serves 1 Million Plus Developers With Agent-Optimized Fern Documentation Platform
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Fern customer case study reports that OpenRouter serves 1M+ developers and 25K+ agents consume its docs monthly. OpenRouter migrated to the Fern platform in February 2025 and uses AI search that resolves 88% of developer queries, offsetting $1.3 million in annual support costs. The setup includes docs-as-code, custom React/MDX components, and llms.txt generation for agent-friendly workflows. OpenRouter ranks as the top Fern consumer of AI search volume.
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