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Altered vs Murf AI

Two fact sheets from our own research, side by side — pricing, platforms, API access and status re-checked by us rather than quoted from the vendors. Murf AI publishes a starting price ($19); Altered does not. Both have a free tier. Only Murf AI ships a public API.

AlteredSpeech-to-speech voice morphing, cloning and TTS for media work, plus a live voice changerMurf AIText-to-speech studio billed by hours of generated audio

Side by side

FactAlteredMurf AI
CategoryVoice ChangerText-to-Speech
Pricing modelFreemiumFreemium
Starts at—$19 month
Public APINoYes
PlatformsWeb, Windows, macOSWeb, API
CompanyAlteredMurf AI
Launched—2020
Last verifiedSep 6, 2026Sep 6, 2026

What our research says

Altered

Altered is one of the few voice tools built around editing a performance you already recorded rather than generating one from scratch, and the licence attached to each tier is spelled out plainly. The catch is the two-axis meter: you can run out of morphing minutes or tokens independently, and the commercial licence only starts at the EUR 87 tier.

Pros

  • Speech-to-speech morphing keeps the original delivery instead of re-reading a script
  • Free tier plus a card-free week-long Creator trial
  • Desktop apps for Windows and Mac in addition to the browser studio
  • Token consumption rates per provider are published on the pricing page

Cons

  • API access, multi-seat and custom voice models are Enterprise-only
  • Two separate meters (minutes and tokens) make cost harder to forecast
  • Commercial licensing requires the Professional tier; lower tiers carry attribution or creator terms

Murf AI

A solid narration studio for training decks, explainers and product demos, priced against a clock rather than a seat count. The trap is arithmetic: Creator's 24 hours a year is roughly two hours a month and nothing rolls over, so bursty work — a course recorded in one week — burns an allowance sized for steady output.

Pros

  • Timing narration against slides or video is built in, not a separate export dance
  • The API is priced per character with a monthly free credit, so small integrations cost little
  • Annual billing cuts about a third off the monthly rate on both paid tiers

Cons

  • Unused generation minutes are wiped each period rather than carried forward
  • One editor seat on Creator and Business alike makes team use expensive
  • The free tier bars downloads and commercial use, so it tests the voices and not the workflow
  • Voice cloning is an enterprise service requiring a 90-minute recording, not a self-serve feature

Which one fits

Choose Altered if you need

  • Post-production teams replacing or repairing voices in existing recordings
  • Call centres and streamers who need a live desktop voice changer
  • Localisation work combining transcription, translation and speech in one place

Choose Murf AI if you need

  • L&D and product teams narrating slide decks and walkthroughs at a predictable pace
  • Solo creators who need commercial rights without hiring a voice actor
  • Developers who want a per-character speech API rather than a seat subscription

More comparisons

All Altered alternatives →All Murf AI alternatives →Browse all Voice Changer →