MP3 to Text vs Retell AI

Side-by-side comparison of features, pricing, and ratings

Analysis reviewed Live tool data as of 2026-10-09
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At a glance

DimensionMP3 to TextRetell AI
PurposeAudio-to-text transcriptionAI voice agents for phone calls
PricingFreemium (free up to 5 GB/10 hrs)Freemium (free trial available)
Accuracy99.9% claimedConversational AI, no explicit accuracy metric
Languages90+ languagesLanguage support depends on LLM model
IntegrationsNone listedTwilio, Vonage, Zapier, HubSpot, Salesforce, etc.
Best forContent creators, researchers, journalistsSupport/sales teams, healthcare, debt collection
MP3 to Text
MP3 to Text

Browser-based MP3 to text transcription that turns audio and video up to 10 hours into editable transcripts in 90+ languages.

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Retell AI
Retell AI

Retell AI builds, tests, and deploys AI phone agents on a pay-as-you-go voice platform priced from $0.07/min.

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Pricing
Freemium
Freemium
Plans
$0
$5/mo ($60/year, billed yearly)
$10/mo ($120/year, billed yearly)
$20/mo ($240/year, billed yearly)
$0/mo (+ $10 free credits)
Custom
Popularity
7 views
6.9k views
Skill Level
Beginner-friendly
Intermediate
API Available
Platforms
Web
WebAPI
Categories
✨ Transcription & Speech-to-Text
☎️ Voice AI Agents & Phone Automation
Features
Transcribe MP3, WAV, M4A, FLAC, AAC, OGG, OPUS, WEBM, AMR, WMA audio
Transcribe video files: MP4, MOV, AVI, MKV
Automatic speaker identification and labelling in multi-speaker recordings
Batch processing with each transcript returned as it finishes
Export transcripts to TXT, DOCX, SRT, VTT, Markdown, CSV and PDF
Optional timestamps and speaker labels on exports
AI summary generation for key takeaways
Transcribe in 90+ languages including English, Spanish, French, German, Japanese, Korean
Handles accents and background noise
Files up to 5 GB and 10 hours each
No daily file limit on transcription
Transcribe short audio without creating an account
60-minute free transcription trial after signup
Unlimited storage on paid plans
Priority email support on paid plans
AI voice agents with ~600ms latency and proprietary turn-taking
Drag-and-drop visual conversation flow builder plus single-prompt agents
Live cost estimator itemising LLM, TTS, voice infra and telephony
Retell Workflows: native orchestration for pre-call and post-call steps
Integration library and tool store inside the Retell dashboard
Preset functions for common agent actions
Conductor copilot: scenario simulation, auto-generated regression tests, in-flow change review
Batch outbound campaigns with pacing, retries and voicemail handling
IVR navigation, DTMF capture and extension dialing
Agentic human handoff where the AI briefs the human agent before transferring
Live call monitoring with real-time transcripts and instant take-over
AI Quality Assurance scoring up to 100% of calls
Custom analytics dashboards with A/B test comparison
Post-call extraction with built-in success and sentiment scoring
Built-in CRM sync to Salesforce, HubSpot, Dynamics 365, GoHighLevel and Zoho CRM
Integrations
Twilio
Vonage
Telnyx
GoHighLevel
n8n
HubSpot
Make
Slack
Zapier
Salesforce
Zendesk
Cal.com
Calendly
Google Drive
Dynamics 365

Who should pick which

  • Podcaster transcribing episodes
    Pick: MP3 to Text

    Supports long audio up to 10 hours, batch processing, speaker recognition, and export to SRT/VTT for captions.

  • Support team automating phone calls
    Pick: Retell AI

    Provides AI voice agents with low latency, call flow design, and integrations with CRM and telephony platforms.

  • Researcher transcribing interviews
    Pick: MP3 to Text

    Accurate transcription in 90+ languages, speaker labeling, and export to TXT/DOCX for analysis.

  • Sales team outbound lead qualification
    Pick: Retell AI

    Batch dialing, real-time function calling, and post-call analysis enable scalable outbound campaigns.

  • Journalist converting audio to text
    Pick: MP3 to Text

    Fast transcription with high accuracy, no signup for short files, and multiple export formats.

Frequently Asked Questions

Can Retell AI transcribe audio files like MP3 to Text?

No. Retell AI is for real-time phone calls, not file transcription. For audio file transcription, use MP3 to Text.

Does MP3 to Text support real-time transcription?

No. It processes uploaded files, not live audio. For real-time, consider other tools.

Is MP3 to Text free?

It has a free tier for short audio files; paid plans unlock larger files and additional features.

Does Retell AI have a free trial?

Yes, it offers a freemium model with a free trial, but detailed pricing is not disclosed.

Can MP3 to Text handle multi-speaker audio?

Yes, it includes speaker recognition (multi-speaker labeling).

What integrations does Retell AI support?

Twilio, Vonage, GoHighLevel, n8n, HubSpot, Make, Slack, Zapier, Salesforce, Zendesk.

How accurate is MP3 to Text?

It claims 99.9% accuracy, which may vary based on audio quality and language.

What industries does Retell AI serve?

Healthcare, financial services, insurance, logistics, home services, retail, travel, and debt collection.

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Last reviewed: July 2, 2026