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Sencial API

sencial.com

From $49/mo Free plan API
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Spec score 7.6 #12 of 23 in AI Voice Isolators

What it is

Sencial API is an audio-processing API that provides REST endpoints for separating, detecting, isolating, and analyzing sound. Its /v1/separate endpoint creates 2, 4, or 6 audio stems with lossless export. Scene detection classifies acoustic environments in real time, while isolation endpoints can focus on or suppress selected sources and enhance voices against background noise. The diarization endpoint separates and labels multiple speakers, and voice embeddings return 512-dimensional vectors for matching and clustering. WebSocket endpoints support low-latency streaming, and the Jobs API handles asynchronous work through polling or webhook notifications. Developers receive API documentation, a quick-start guide, and Python, JavaScript, and cURL examples. The free Starter plan includes 10 minutes of monthly processing, all endpoints, and 128 kbps MP3 output without a credit card. Developer costs $49 per month, with 300 minutes, real-time processing, WAV/FLAC output, and $0.20-per-minute overages. Enterprise pricing is custom.

Spec sheet

Purpose
Sencial API provides REST endpoints for sound separation, scene detection, sound and voice isolation, multi-speaker diarization, and voice embeddings.Read 7 Oct 2026 · sencial.com
Security
API requests use a bearer API key in the Authorization header, as shown in the page's cURL example.Read 7 Oct 2026 · sencial.com
Async jobs
The Jobs API lets clients poll asynchronous tasks or receive webhook notifications.Read 7 Oct 2026 · sencial.com
Beta access
Developer beta access is subject to approval, with a stated response time of 2–3 business days.Read 7 Oct 2026 · sencial.com
Developer resources
The page offers API documentation, a quick-start guide, and Python, JavaScript, and cURL code examples.Read 7 Oct 2026 · sencial.com
Free tier terms
The free tier includes 10 minutes of processing per month and requires no credit card.Read 7 Oct 2026 · sencial.com
Scene detection
The /v1/scene-detect endpoint classifies acoustic environments in real time.Read 7 Oct 2026 · sencial.com
Sound isolation
The /v1/isolate endpoint focuses or suppresses specific sound sources.Read 7 Oct 2026 · sencial.com
Speaker tools
The /v1/diarize endpoint separates and labels multiple speakers, while /v1/voice-embed returns 512-D vectors for voice matching and clustering.Read 7 Oct 2026 · sencial.com
Stem separation
The /v1/separate endpoint splits audio into 2, 4, or 6 stems with lossless export.Read 7 Oct 2026 · sencial.com
Streaming
The /v1/rt endpoint offers WebSocket endpoints for low-latency streaming.Read 7 Oct 2026 · sencial.com
Use cases
The page describes hearing apps, music tools, meeting assistants, and scene-understanding applications as things developers can build.Read 7 Oct 2026 · sencial.com
Voice processing
The /v1/voice-isolate endpoint enhances voices and reduces background noise.Read 7 Oct 2026 · sencial.com

Plans and prices

Starter Free 10 minutes of audio processing/month · All API endpoints · 128 kbps MP3 output · Email support Read 7 Oct 2026 · sencial.com
Developer $49 a month $49/mo 300 minutes/month included · WebSocket real-time processing · WAV/FLAC lossless output · Priority support & SLA · $0.20/min overages Read 7 Oct 2026 · sencial.com
Enterprise Priced on request Custom Volume discounts available · On-premise deployment options · Custom model training · Dedicated support team · White-label solutions Read 7 Oct 2026 · sencial.com

Every Sencial API plan and price →

Strong points and limits

Strong points

  • Multiple audio separation stem counts
  • Real-time WebSocket streaming
  • Speaker labeling and voice embeddings
  • Free tier needs no credit card
  • Python, JavaScript, and cURL examples

Limits

  • Free tier limited to 10 minutes monthly
  • Developer plan costs $49 per month
  • Beta access requires approval
  • Enterprise pricing is custom

Who it suits

It suits developers building hearing apps, music tools, meeting assistants, or scene-understanding applications. It is also relevant to teams needing streaming, asynchronous jobs, or speaker analysis through an API.

Verdict

Sencial API covers separation, scene detection, isolation, voice processing, and speaker analysis in one API. Its free tier provides a defined starting allowance, while paid plans add processing time, lossless formats, and support terms.

Where Specifiction places it

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