OpenRouter· Updated
OpenRouter's Auto Exacto is now live by default for all tool-calling API requests, routing to providers with the best reliability signals instead of the lowest price. It cut tool error rates by 15–90% across providers in its first few days.
The change matters most during new model launches — exactly when provider variance spikes as inference engines finish patching chat templates and tool-call parsers. Previously, price-weighted defaults distributed tool calls across providers regardless of reliability. Auto Exacto makes the routing layer an active quality gate.
Developers building tool-calling AI agents benefit immediately — no configuration required. To revert to price-weighted routing, set provider.sort to "price", use the :floor model variant, or update your account's default sort in preferences.
"Auto Exacto" is now live, and on by default for tool-calling requests. Over the last few days, OpenRouter has reduced tool error rates by 15-90% across providers automatically. Here's how it works: https://t.co/BYGWkMkJNp
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