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Retell AI vs SoundWise.ai

API for building conversational voice AI, not a general transcription tool
Retell AIAPI For Building Human-like Conversational Voice AISoundWise.aiTransform Speech to Text, Instantly and Freely

Side by side

What it is
Retell AI:Retell AI provides an API to build human-like conversational voice agents for phone, chat and SMS with low latency.
SoundWise.ai:SoundWise.ai is a free, browser-based tool that transcribes unlimited audio and video files to text.
Best for
Retell AI:Low-latency AI voice agents for phone calls
SoundWise.ai:Unlimited free browser transcription
Who it’s for
Retell AI:Developers building voice-based customer service, sales or support automation.
SoundWise.ai:Students, creators, professionals needing quick transcription without installing software.
Pricing
Retell AI:Freemium
SoundWise.ai:Freemium
Plans
Retell AI:Pay-as-you-go $0.07-$0.31 / min per minute
SoundWise.ai:Free Free · Pro US$10 per month (billed annually)
Works with
Retell AI:knowledge bases
SoundWise.ai:—
DevHunt upvotes
Retell AI:4
SoundWise.ai:0
Launched on DevHunt
Retell AI:May 2024
SoundWise.ai:Jan 2026

Retell AI features

  • Drag-and-drop flow builder. Design complex call workflows visually with functions, integrations and DTMF handling.
  • Real-time testing & simulation. Manually test, simulate thousands of scenarios and run regression tests before deployment.
  • Ultra-low latency. Proprietary orchestration delivers ~600 ms response time for smooth conversations.
  • Multi-channel support. Deploy agents over voice calls, web/chat widgets and SMS via a unified API.
  • Enterprise security. HIPAA, SOC 2 Type II, GDPR, ISO 27001 compliance with SSO, role-based access and data redaction.
  • Pay-as-you-go pricing. No contracts; $0.07-$0.31 per minute for voice agents and $0.002 per chat message.
Retell AI on DevHunt →Alternatives

SoundWise.ai features

  • Unlimited Free Transcription. Convert unlimited audio/video files to text at no cost.
  • Wide Format Support. Handles MP3, WAV, MP4, MOV, MKV, FLAC, AAC and more.
  • Browser-Based Access. No installation required; works directly in the web browser.
  • Drag-and-Drop Interface. Simple UI lets users drop files to start transcription.
  • Fast Processing (Local). Transcribes about 1 hour of audio in ~10 minutes on a typical PC.
  • Pro Cloud Transcription. Cloud models transcribe 1 hour of audio in ~30 seconds (10x faster).
SoundWise.ai on DevHunt →Alternatives

Based on each tool's website and DevHunt data. Details may change; check the official sites.