Provider Variance: Introducing Exacto

OpenRouter has introduced Exacto, a new set of endpoints designed to enhance tool-calling accuracy by utilizing providers with proven success rates. This initiative responds to observed variances in model performance across different providers, despite running identical models. OpenRouter maintains strong relationships with its providers, ensuring they prioritize quality, although occasional discrepancies occur due to the complex nature of hosting inference models. By collaborating with Artificial Analysis, they have benchmarked models such as DeepSeek 3.1, revealing performance improvements as providers optimize their systems. Exacto endpoints leverage tool-calling data, provider preferences, and benchmarks to route requests to top-performing providers, aiming to reduce tool-calling failures and increase reliability. While Exacto is focused on tool-calling accuracy, OpenRouter plans to share more data publicly to aid user decision-making and help providers improve their performance. The new Exacto endpoints are expected to gain popularity in agentic workflows, and OpenRouter is committed to refining and expanding its offerings based on feedback and ongoing analysis.

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