{"schema_version":"1.0","report_id":"public-short-audio-2026-09-14","title":"Internal short-audio API verification","publisher":"CastReader","evidence_started_at":"2026-09-14T02:34:39.500Z","evidence_completed_at":"2026-09-14T02:58:53.771Z","model":"clone-v1","voice":"Rowan","methodology":"One operator-published Rowan voice. Three comparison texts and twenty learning cards. Ordinary successful paid API requests; stored outputs decoded, hashed and paired with original input. No failed requests are represented in this output manifest, so this is not a service-wide success-rate measurement.","summary":{"successful_generations":23,"billable_characters":623,"charged_usd":"0.004984","language_codes":["en","zh","ja","es"],"comparison_samples":3,"learning_cards":20},"evidence":{"comparison_manifest":"https://voice.castreader.com/examples/rowan/manifest.json","cards_manifest":"https://voice.castreader.com/examples/flashcards/results/manifest.json","measured_english_timestamps":"https://voice.castreader.com/examples/rowan/en.timestamps.json","results_zip":"https://voice.castreader.com/examples/flashcards/results.zip","runnable_source":"https://voice.castreader.com/examples/flashcards/starter.zip"},"checks":["All 23 stored MP3s decoded and matched SHA-256.","Input, language, paid usage and output association retained.","English example contains 14 measured word intervals.","Saved 20-card rerun made no API requests after checksums matched."],"limitations":["First-party internal example, not an independent benchmark or customer case.","Four languages sampled; this does not verify quality in every configured language or every voice.","Offline ASR detected the expected language, but some Chinese/Japanese transcriptions differed from the input.","No universal naturalness, speaker-similarity or native-accent score.","No measured latency percentiles, load test, SLA, or competitor comparison.","Input text and stored audio must be reviewed for the intended use."],"reproducibility":"Download source and manifests; inspect inputs, reproduce with an activated workspace and an authorized voice. New generation uses normal billing and will not be byte-identical to recorded outputs."}