{"uid":"cap_2ECVOTukTmWQPbcAQyn42","slug":"combify-compute-speech-to-text-transcription-e7a56aa7","name":"Combify Compute Speech-to-Text Transcription","description":"Speech to text for voice notes, meeting clips, and podcasts: send audio, get a transcript (Whisper large-v3-turbo), fixed price $0.015 USDC. Use this when the input is audio; use /chat when the input is already text. POST JSON body {audio (required, base64, max 8 MB decoded), language (optional hint)}. Returns {text, duration_s}. Unpaid calls get 402; paid calls settle only on success.","url":"https://compute.combify.app/transcribe?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"audio":{"type":"string","description":"Base64-encoded audio, max 8 MB decoded"},"language":{"type":"string","description":"Optional language hint"}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.015","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.015/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.015","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.015","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_RxKTX8HDUTari-naGM9HD","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.015","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Transcribes audio files (voice notes, meeting clips, podcasts) to text using Whisper large-v3-turbo for $0.015 USDC per call","exampleAgentPrompt":"Can you transcribe this voice note for me? I'll send it as a base64-encoded audio file — it's an English meeting recording about 3 minutes long.","exampleUseCases":[{"title":"Meeting notes from recorded call","prompt":"I have a base64-encoded MP3 of a 45-minute team meeting in English — can you transcribe it so I can pull out the action items?"},{"title":"Podcast episode transcript","prompt":"Transcribe this podcast clip for me — it's base64-encoded audio, spoken in Spanish, and I need the full text to publish as show notes."},{"title":"Voice note to searchable text","prompt":"I recorded a voice memo with some ideas earlier — can you convert this base64 audio to text so I can search through it and paste it into my notes app?"}],"resultDescription":"Returns a JSON object with 'text' (the full transcript as a string) and 'duration_s' (the length of the audio in seconds). Unpaid calls receive a 402 Payment Required response; successful payment settles only on successful transcription.","failureModes":["402 Payment Required — call was made without valid x402 payment","Audio exceeds 8 MB decoded size limit — request rejected","Unsupported audio format or corrupted base64 encoding — transcription fails","Ambiguous or incorrectly specified language hint leading to reduced accuracy","Network timeout for large audio files near the size limit"],"whenToPreferThis":"Choose this endpoint when your input is audio (voice notes, meeting recordings, podcasts, interviews) and you need a text transcript. Use /chat instead if the input is already text. Priced at $0.015 USDC per call via x402, making it cost-effective for individual clips. Backed by Whisper large-v3-turbo for high accuracy across 100+ languages.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-10T12:35:38.192Z","isFirstParty":false,"canonicalSlug":"combify-compute-speech-to-text-transcription-e7a56aa7"}