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SJolt vs Vocal Isolator

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

SJolt compared with Vocal Isolator
DetailSJolt logo SJoltVocal Isolator logo Vocal Isolator
What it doesOne API for the best generation models AI vocal and music separator for creating acapellas, instrumentals, and karaoke tracks
StageNot given Not given
FoundedNot given Not given
Based inNot given Not given
Pricing modelPaid Not given
PricingFree account with pay-per-use model. Pricing varies by model and task. Example rates: Seedance 2.5 text-to-video at $0.12/s (480p) to $0.675/s (1080p); Gemini Omni 1.1 Flash at $0.03/s (360p) to $0.30/s (4K); Grok Imagine Video 1.5 at $0.0225/s; Suno music generation at $0.06 per task; FLUX.2 Pro im Free tier: 30-second preview without sign-in, 1 minute free downloads after sign-in, 10 clips up to 30 seconds daily. Pro: $9.99/month for 20 hours monthly. Pay-as-you-go: 20 Minute Pack $1.99, 1 Hour Pack $4.99, 10 Hour Pack $14.99.
Key features
  • Image generation model playground
  • Video generation model playground
  • Audio generation model playground
  • API request previews
  • Async task status polling
  • Unified API across multiple generation models
  • Usage-based model billing
  • Model-level cost tracking
  • Supports 36 generation models
  • Image editing capabilities
  • BS-RoFormer AI model for source separation with 18.10 dB instrumental SDR on MVSEP leaderboard
  • Supports MP3, WAV, FLAC, AIFF, M4A, AAC, OGG, OPUS audio and MP4, MOV, M4V, WEBM, MKV video up to 2 GB
  • Returns both tracks as 44.1 kHz, 16-bit WAV or MP3 with sample alignment
  • Speed control from 50% to 150% without changing pitch
  • Key shift up or down by up to 6 semitones without changing speed
  • BPM and key detection on acapella extractor
  • 24-bit WAV output option at 44.1 or 48 kHz on acapella extractor
  • Remove background noise, hum, fans, traffic, and room echo from speech
What makes it different
  • Single API request works across different generation models
  • Test models in playground with same API fields before production
  • One balance covers usage across all supported models
  • Compare output quality and cost before choosing a model
  • Long-running jobs run asynchronously with task ID polling
  • Uses AI source separation instead of phase cancellation, keeping bass and drums intact
  • Automatic file deletion after 24 hours for privacy
  • Fast processing on dedicated cloud GPUs with instant preview as upload begins
Free planNot given Not given
Open sourceNot given Not given
PlatformsNot given Not given
Public APINot given Not given
Community votes00
DR (Domain Rating by Ahrefs)21 −1 (down) since last check5 +3 (up) since last check
Trust Flow (Majestic)210
Citation Flow (Majestic)300
Referring domains (Majestic)840

4 details filled in for both companies.

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