faster-whisper · WhisperX · pyannote — open-source under the hood

Drop in audio. Get a transcript with speakers.

One API call. Word-level timestamps. SRT and VTT included. Half the price of OpenAI Whisper.

One call. Everything you need.

Multipart upload or file URL. Stream back transcript, segments, words, and subtitles.

Request

curl -X POST https://api.whisperly.dev/v1/transcribe \
  -H "Authorization: Bearer $WHISPERLY_KEY" \
  -F "file=@meeting.mp3" \
  -F "diarization=true" \
  -F "word_timestamps=true"

Response

{
  "id": "req_01HX...",
  "status": "succeeded",
  "data": {
    "text": "Hello and welcome to the call.",
    "segments": [
      { "start": 0.0, "end": 2.4, "text": "Hello and welcome.", "speaker": "SPEAKER_00" }
    ],
    "subtitles": {
      "srt": "1\n00:00:00,000 --> 00:00:02,400\n[SPEAKER_00] Hello and welcome.\n",
      "vtt": "WEBVTT\n\n00:00:00.000 --> 00:00:02.400\n<v SPEAKER_00>Hello and welcome.\n"
    },
    "metadata": {
      "duration_seconds": 1842.0,
      "language_detected": "en",
      "speakers_detected": 3,
      "model_used": "small"
    }
  },
  "usage": { "units": 30.7, "unit_type": "minute" }
}

Better than OpenAI's. Cheaper than AssemblyAI.

Numbers from public pricing pages, May 2026.

OpenAI WhisperAssemblyAIDeepgramWhisperly
Per-min price$0.006$0.012$0.012–$0.04$0.005
Diarizationyesyesyes
Word timestampsflakyyesyesyes
SRT/VTT exportpartialpartialyes
Self-serve checkoutyesyesenterprise onlyyes

Simple, usage-based pricing.

Start free. Upgrade when you need more.

Free

$0forever

30 min / month

  • tiny model
  • Community support
Start free

Starter

$19/ month

5 hours

  • small model
  • Email support
  • Diarization
  • $0.067/min overage
Subscribe

Pro

$79/ month

50 hours

  • large-v3-turbo
  • Priority support
  • Word timestamps
  • $0.025/min overage
Subscribe

Scale

$299/ month

500 hours

  • All models
  • SLA
  • Higher concurrency
  • $0.01/min overage
Contact us

Translation, summaries, real-time.

Phase 2 is shipping translation and summarization endpoints. Drop your email and we'll tell you the day they go live — nothing else.

Get notified when this ships