diodeo
Durable transcription for high-volume call centers

Turn every call into accurate, structured text.

diodeo is an audio & video transcription API built for high-volume call centers — drop-in transcription today, with summaries, QA, and real-time alerting as add-ons when you're ready.

Get started See pricing
30%+
cheaper than legacy providers
99.9%
durable job delivery
Unlimited
projects & API keys per org
Standard & Pro
speech models to choose from

How it works

Send a recording URL, get back a transcript and a signed webhook — no polling required.

1

Ingest

Point us at a recording URL — Twilio, S3/R2 presigned uploads, or any authenticated source.

2

Transcribe

Standard or Pro speech models, with diarization, multichannel, and PII/PCI redaction.

3

Understand

Layer on summaries, sentiment, QA scoring, and compliance flags as you need them.

4

Deliver

A signed webhook lands the result in your system the moment it's ready — durable retries included.

One platform, four tiers

Start with transcription today. Bolt on intelligence as you grow.

Transcribe

  • Accurate transcription
  • Speaker diarization
  • PII/PCI redaction
  • Per-project API keys

Understand

  • Summaries
  • Sentiment
  • Entity extraction
  • Custom fields

Assure

  • Script/disclosure adherence
  • Automated QA scoring
  • Compliance flagging

Act

  • CRM sync
  • Real-time alerting
  • Analytics dashboards

Everything you need for call intelligence.

One API for transcription today — plug in understanding, quality, and automation as you need them.

  • Transcribe every call with industry-leading accuracy
  • Understand intent, sentiment, and compliance risk
  • Automate what happens the moment a call ends
  • Scale from one office to hundreds, securely
Diarization

Know who said what

Redaction

PII/PCI stripped inline

Webhooks

Signed & retried delivery

Multi-tenant

Per-project API keys

Pre-recorded transcription

Turn any call recording into a clean, structured transcript — no transcription infrastructure to run yourself.

Standard Pro

Diarization & multichannel

Know exactly who said what, even on dual-channel recordings, with no extra processing steps.

Diarization Multichannel

PII & PCI redaction

Strip sensitive data out of transcripts and logs automatically, before it ever reaches your systems.

Redaction

Call understanding

Layer summaries, sentiment, and entity extraction on top of your transcripts with a single add-on.

Understand

Quality & compliance scoring

Flag disclosure adherence and score every single call for QA — not just a sample of them.

Assure

Workflow automation

Sync outcomes straight to your CRM and trigger real-time alerts the moment a call wraps up.

Act

Built for high-volume, multi-office deployments

Idempotent job submission, signed & retried webhooks, and per-project API keys with test & live modes — so hundreds of offices can run on one pipeline without babysitting it.

Built for engineers, not sales calls.

One HTTP call to submit a job. A signed webhook when it's done. No SDK lock-in, no dashboards required — though we built you a good one anyway.

  • Idempotent job submission with your own request ID
  • Signed, retried webhooks (HMAC-verified)
  • Per-project API keys with test & live modes
  • Usage & spend dashboards, no surprise invoices
// Submit a recording for transcription
POST https://api-production-254f.up.railway.app/v1/transcriptions
Authorization: sk_live_...
Content-Type: application/json

{
  "audio_url": "https://.../call-42891.wav",
  "model": "standard",
  "diarize": true,
  "redact_pii": true
}

// -> 202 Accepted
{ "job_id": "job_9f2a...", "status": "queued" }
$0.024/min $0.0168/min

The same call, for 30%+ less.

Swap out legacy per-minute pricing without changing your workflow — same recordings, same webhooks, lower bill.

Full pricing

Ready to cut your transcription bill?

Spin up an API key in minutes and start transcribing — fully self-serve.

Get started