arXiv: cs.AI preprintsInternational6 November 2026
What the Middleman Delivers: Answer Behavior, Tool Permissions, and Billed Usage in LLM API Relays
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arXiv:2611.07650v1 Announce Type: cross Abstract: Third-party application programming interface (API) relays offer access to large language models (LLMs), often at lower prices. Users depend on these services for model quality, instruction compliance, and accurate billing. However, existing studies leave unclear whether relays meet these expectations together. We test 20 relays offering GPT-6 Astra and Claude Opus 5. First, we compare answers to knowledge questions with batch-matched official responses. In our first-round sample, the analysis flags 7/10 low-price and 2/10 same- or higher-price
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