Provider Variance: Introducing Exacto

OpenRouter introduces "Exacto," a new set of endpoints designed to enhance tool-calling accuracy by selecting providers with higher success rates. These endpoints aim to address the observed discrepancies in performance among different providers using identical models, which arise due to the complexities of implementing models as production-grade inference. OpenRouter's unique position, handling billions of requests, allows it to identify and address these variances. By working closely with providers and conducting comprehensive benchmarks, OpenRouter has created an environment where tool-calling accuracy is significantly improved. Exacto endpoints are available for several models, including Kimi K2 and DeepSeek v3.1, and are expected to be popular in workflows that rely on precise tool usage. OpenRouter plans to continue refining this approach and share more data publicly to help users make informed decisions, while encouraging providers to improve and meet the criteria for inclusion in the Exacto routing pool.

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