{"language":"Gujarati","locale":"gu-IN","measuredAt":"2026-08-15","method":"Three isolated production make_tts adapter instances at 8 kHz PCM16; await Azure built-in connection/model warm-up; start perf_counter immediately before speak(text); stop at first non-empty audio chunk; cancel after first chunk; report median; exclude STT, model, carrier and playback.","runtime":{"grade":"Bharat Essential","provider":"Google Cloud Text-to-Speech","vendorVoice":"gu-IN-Wavenet-A","displayVoice":"Hetal","sttProvider":"Sarvam saaras:v3","engine":"cascade","getVoicePackResult":"None from the generic business integration","resolvedPack":"world pack"},"benchmarkText":"નમસ્તે, હું તમને કેવી રીતે મદદ કરી શકું?","latencyRunsMs":[663,719,1013],"medianFirstAudioMs":719,"packSamples":[{"purpose":"Filler while a tool runs","text":"One moment","registerNote":"The fixed world-pack filler is English rather than a localized line."},{"purpose":"Retry after unclear speech","text":"Sorry, could you say that once more?","registerNote":"The fixed recovery line is polite English."},{"purpose":"Retract an unsupported action","text":"Sorry — I can't actually send that from here. Let me take your number and someone will get it across to you.","registerNote":"The fixed safety fallback is English even when the model's normal replies mirror the caller's language."}],"honestLimits":["The locale has no dedicated LanguagePack in the runtime registry on 15 Aug 2026, so resolve_pack returns the world pack.","The world pack tells the model to detect and mirror the caller's language, but its fixed filler, retry and retraction strings remain English.","The first-audio benchmark measures TTS adapter latency only; it excludes caller speech recognition, model reasoning, carrier transit and handset playback.","The WaveNet adapter is non-streaming: Google returns the full clip before the first 200 ms PCM frame is yielded."]}