JioStar used the OpenAI API to build a conversational video and cricket-statistics discovery assistant into JioHotstar, launched in about eight weeks across more than 15 languages. In an interview with Chief Architect Vijay Seshadri, JioStar—whose platforms serve over 500 million consumers—describes balancing accuracy, latency, and cost, with over 60% of users choosing voice. The team relied on evaluation frameworks, domain experts, and a model-as-judge validation layer; Codex helped accelerate generating eval cases.
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