📊 Our Test Results:
- 🎯 音声品質: Murf AI scored 9/10 vs Altered 7.5/10 — Murf AI wins
- ⚡ 速度テスト: Murf AI generated 500 words in 8 seconds vs Altered in 14 seconds — Murf AI wins
- 🔒 音声モーフィング: Altered delivered 9/10 accuracy vs Murf AI 6/10 — Altered wins
- 📝 Language Coverage: Murf AI covers 20+ languages vs Altered covers 10+ — Murf AI wins
- 🎤 Real-Time Voice Change: Altered supports live calls vs Murf AI does not — Altered wins
Are you struggling to find the right AI 音声ジェネレータ あなたのプロジェクトのために?
You need a tool that turns 文章 into natural sounding speech fast.
Murf AI and Altered are two top picks in the AI voice space.
Both create high quality voices, but they work very differently.
Murf AI focuses on studio quality voiceovers from text input.
It powers over 10 million creators and developers worldwide.
Altered focuses on voice morphing and real-time voice changing.
It was built by a former Google speech scientist for media production.
One tool is better for ユーチューブ ビデオとマーケティングコンテンツ。
The other is better for game development and film production.
Which one fits your workflow best?
Let’s break it all down so you can pick the perfect voice tool.
概要
To give you the most accurate comparison, we tested Murf AI vs Altered side by side.
We spent weeks using each platform for different voice projects.
We tested テキスト読み上げ, voice cloning, audio editing, and more.
We are sharing our firsthand experience to help you make the right choice.
Murf AIとは何ですか？
Murf AI is a cloud-based AI voice generator that turns written text into lifelike speech.
It offers over 120 realistic voices in more than 20 languages.
Content creators, educators, and marketers use it to produce studio quality voiceovers without recording equipment.
The platform also includes AI dubbing, a voice changer, and a built-in ビデオエディター.
Murf AI is trained on over 70,000 hours of human speech データ.
You can adjust the pace, tone, ピッチ, and emphasis of every voiceover.
The platform uses complex neural networks to mimic the tonalities of human speech.
It can automatically transcribe recorded speech into editable text format too.
Murf AI is considered a cost-effective alternative to hiring voice actors.
マーフAI
Turn any script into a professional voiceover in seconds. Murf AI gives you 120+ natural sounding voices, AI dubbing in 44 languages, and a built-in video editor. Trusted by over 10 million creators worldwide.
Murf AIの価格
Here’s what Murf AI costs in 2026. Let’s break it down.
| プラン | 価格 | 最適な用途 |
|---|---|---|
| 無料 | $0 | Testing basic voice features |
| クリエイター | 月額19ドル | Solo creators and フリーランサー |
| 仕事 | 月額66ドル | Teams with collaboration needs |
| 企業 | カスタム価格設定 | Companies with custom requirements |
無料トライアル: Yes. Murf AI offers a free plan with 10 minutes of voice generation. No credit card needed. You cannot download audio on the free plan.
返金保証: Murf AI does not advertise a money-back guarantee. You can cancel your subscription before the next billing date.
📌 注記： All paid plans include commercial rights and access to 200+ voices. The Creator plan gives you 24 hours of voice generation per year on annual billing.
⚠️ Warning: Monthly plans auto-renew. Cancel before your billing date to avoid charges. Annual billing saves about 33% compared to monthly.
Key Benefits of Murf AI
Here’s why Murf AI stands out from the competition:
- 膨大な音声ライブラリ: Over 120 AI voices across 20+ languages. You can filter by gender, age, and use case to find your perfect voice fast.
- Studio Quality Output: Voices sound natural and human. The Gen 2 model achieves 99.38% pronunciation accuracy across multiple languages.
- 内蔵ビデオエディター: Add voiceovers to videos inside the platform. You get access to millions of stock images, music, and video assets.
- AI Dubbing: Translate and dub your videos into 44 languages 即座に. No need to hire international voice talent.
- アプリ統合: Works with Canva, Google Slides, and PowerPoint. You can add voiceovers directly inside your favorite tools.
- 企業 安全: Holds SOC 2 Type II, ISO 27001, HIPAA, and GDPR certifications. Your data stays safe.
- Falcon API: Delivers speech with under 55ms latency. Perfect for voice agents and real-time apps at just $0.01 per minute.
Murf AI Pros & Cons
✅ Pros
- 120+ lifelike voices in 20+ languages with fine-tuned controls for pitch, speed, and tone
- Built-in video editor with millions of stock assets saves you from buying separate software
- Canva and Google Slides integrations let you add voiceovers without leaving your workspace
- Enterprise-grade security with SOC 2, HIPAA, and GDPR compliance for regulated industries
- Falcon API with 55ms latency is ideal for developers building voice applications
❌ Cons
- No free plan with download access. The free tier only lets you preview audio.
- Voice cloning is a separate paid feature and not included in standard plans
- Some technical words get mispronounced and need manual correction
- No real-time voice changer for live calls or gaming sessions
Altered とは何ですか?
Altered is an AI voice content creation platform built for media production.
It packs voice cloning, voice morphing, text to speech, and a real-time voice changer into one app.
Game developers, podcasters, and film producers use it for professional voice performances.
The platform integrates multiple voice AI technologies into a single interface.
What makes Altered unique is voice morphing. You record your own voice. Then the AI changes it to sound like someone else.
You keep the emotion and timing. Only the voice identity changes.
This is a huge advantage for audio storytelling and character voice creation.
Altered Studio also includes an AI voice cleaner that removes background noise from recordings.
The history editing feature lets you track and revert to earlier versions of your audio project.
It reduces the time, cost, and complexity of recording professional voiceovers.
改変
Transform any voice into any character with Altered Studio. Use voice morphing, AI cloning, and 14 speaking styles to create professional audio content. Built by a former Google speech scientist.
Altered Pricing
Here’s what Altered costs in 2026. Let’s break it down.
| プラン | 価格 | 最適な用途 |
|---|---|---|
| 無料 | 月額0ドル | Testing basic voice editing features |
| クリエイター | 月額30ドル | Individual voice creators and podcasters |
| プロ | 月額90ドル | Studios and production teams |
無料トライアル: Yes. Altered offers a free plan with basic voice editing features. You can also sign up for a free trial of the Creator plan.
返金保証: Contact the Altered pricing page for refund details on Professional and Enterprise plans.
📌 注記： The free plan lets you explore voice editing and basic morphing. You need the Creator plan at $30/month to unlock voice cloning and all speaking styles.
⚠️ Warning: Prices shown are monthly costs when billed annually. Monthly billing costs more. Check the pricing page for current quarterly and monthly rates.
Key Benefits of Altered
Here’s why Altered stands out from the competition:
- 音声モーフィング: Record your own performance, then change the voice identity. You keep the emotion and timing while the AI swaps the voice.
- Real-Time Voice Changer: Change your voice during live calls or gaming sessions. It works across most communication platforms with low latency.
- 14 Speaking Styles: Choose from styles like whispering, shouting, and narration. This gives your voiceovers more emotional range than most competitors.
- 音声クローニング: Create a custom AI 音声クローン from your recordings. Use it across projects without recording again.
- Built-in Audio Editor: Edit, clean, and mix your voice recordings inside the platform. No need for separate audio editing software.
- Transcription & Translation: Transcribe audio and translate content into multiple languages within the same app.
Altered Pros & Cons
✅ Pros
- Voice morphing preserves your emotional performance while changing the voice identity completely
- Real-time voice changer works during live calls and gaming with effective noise cancellation
- 14 speaking styles including whispering and shouting add depth to any voice project
- Free plan available for testing basic features before you commit
❌ Cons
- Fewer TTS voices and language options compared to Murf AI’s library
- No built-in video editor or stock media library for creating content
- Higher starting price at $30/month versus Murf AI’s $19/month
- No integrations with Canva, Google Slides, or PowerPoint
機能比較
Ready to dive into a detailed comparison of Murf AI vs Altered?
We’ll explore 10 key features to help you decide which AI voice generator fits your needs.
| 特徴 | マーフAI | 改変 |
|---|---|---|
| 開始価格 | $0 (Free) | $0/month (Free) |
| 無料プラン | ✅ (10 min, no downloads) | ✅ |
| AI音声 | 120+ voices, 20+ languages | Fewer voices, 10+ languages |
| 音声クローン | ✅ (add-on) | ✅ (Creator plan) |
| 音声モーフィング | ❌ | ✅ |
| Real-Time Voice Changer | ❌ | ✅ |
| ビデオエディター | ✅ | ❌ |
| AIダビング | ✅ (44 languages) | ❌ |
| App Integrations | Canva, Google Slides, PPT | 限定 |
| 最適な用途 | Content creators, marketers | Game devs, film producers |
1. AI音声
マーフAI: Offers over 120 lifelike text to speech voices across more than 20 languages. You can filter voices by gender, age, accent, and use case. The Gen 2 model scores 99.38% pronunciation accuracy. Blind tests show listeners chose Murf voices for naturalness 8 out of 10 times.
変更: Provides a smaller portfolio of TTS voices. The voice library focuses on quality over quantity. Altered’s speaking styles feature adds emotional variety. You get 14 styles including whispering, shouting, and narration to shape each voice.
2. テキスト読み上げ
マーフAI: Converts written text into high quality, natural sounding speech. You can adjust pitch, speed, tone, and emphasis. The platform lets you add pauses in the right places. This makes voices sound less robotic and more human.
変更: Also converts text to speech with its premium TTS engine. The emotive text to speech feature supports 14 speaking styles. This gives you more control over how words are delivered. But the overall voice count is smaller than Murf AI.
3. 音声クローン
マーフAI: Offers voice cloning as a separate add-on feature. You record your voice samples and upload them to Murf’s team. They build a custom AI voice that captures your tone and style. The cloned voice can convey different emotions.
変更: Includes voice cloning in the Creator plan at $30/month. The rapid voice clone feature creates a custom voice model from your recordings. You can use it across all your projects without recording again. Voice training lets you refine the clone over time.
⚠️ Warning: Voice cloning raises ethical questions. Both platforms require consent from the voice owner. Check local laws about AI voice cloning before using this feature.
4. Voice Morphing
マーフAI: Does not offer voice morphing. Murf focuses on text to speech and voice cloning instead. You type your script and pick a voice. The AI generates the voiceover from scratch.
変更: Voice morphing is Altered’s standout feature. You record your own performance. Then the AI changes your voice to sound like a different person. You keep the emotion, timing, and delivery. Only the vocal identity changes. This is a huge advantage for actors and game developers.
5. Real-Time Voice Changer
マーフAI: Includes a voice changer tool, but it only works on recorded audio files. You cannot use it during live calls or gaming sessions. It is designed for post-production voice editing.
変更: Offers a real-time voice changer that works during live voice chats. It supports diverse communication platforms with effective noise cancellation. This makes it useful for streamers, gamers, and voice chat users who need instant voice changes.
6. AIダビング
AI dubbing is a major differentiator in this comparison.
マーフAI: Provides AI dubbing in 44 languages. You can translate and dub your videos without hiring international voice talent. The platform handles translation and voice generation in one step. This saves hours of production time. You upload your video and pick the target language. Murf does the rest.
変更: Does not offer a dedicated AI dubbing feature. It supports transcription and translation of audio content. But you need to handle the dubbing process manually. This is a clear gap compared to Murf AI. If you create content for a global audience, this matters a lot.
💡 Test Result: We dubbed a 5-minute English video into Spanish using Murf AI. The entire process took under 3 minutes. The lip-sync was not perfect, but the voice quality was solid for marketing content.
7. Audio Editor
マーフAI: Includes a basic timeline editor for syncing voiceovers with video and images. You can add background music from a royalty-free library. But it is not a full audio editing suite.
変更: Features a next-generation audio editor built specifically for voice content. The AI voice cleaner removes background noise. The history editing feature lets you track and revert changes. It is closer to a professional audio workstation.
8. 統合
マーフAI: Integrates with Canva, Google Slides, and PowerPoint. You can add voiceovers directly inside these apps. The Falcon API also lets developers build voice features into their own products.
変更: Has limited third-party integrations. The platform works mostly as a standalone app. It does not connect to Canva, Google Slides, or PowerPoint. You need to export audio and import it into other tools manually.
9. Collaboration Features
マーフAI: Supports team collaboration on the Business and Enterprise plans. Multiple team members can work on projects at the same time. Sharing and project management tools are built in.
変更: Collaboration features are limited compared to Murf AI. The Professional plan includes some team features. But the platform is mainly designed for individual creators and small studios.
10. Pricing & Cost
Let’s compare the pricing plans side by side.
| プラン | マーフAI | 改変 |
|---|---|---|
| 無料 | $0 (10 min, no downloads) | $0/month (basic features) |
| Entry Paid | $19/month (Creator) | $30/month (Creator) |
| Mid Tier | $66/month (Business) | $90/month (Professional) |
| 企業 | カスタム価格設定 | 営業担当者に問い合わせる |
マーフAI: Offers a free plan and paid plans starting at $19/month for the Creator tier with commercial rights. You get access to 200+ voices and 24 hours of generation per year. The value per dollar is strong for content creators who need a lot of voiceovers.
変更: Offers a free plan with basic features. The paid Creator plan starts at $30/month. This is $11 more per month than Murf AI. But it includes voice cloning and morphing in the base price, which Murf charges extra for.
Different Scenarios
| If You Need… | Choose | Why |
|---|---|---|
| Tight budget | マーフAI | $19/month vs $30/month |
| Voice morphing | 改変 | Only tool with this feature |
| Most voice options | マーフAI | 120+ voices, 20+ languages |
| Real-time voice change | 改変 | Live calls and gaming |
| Video dubbing | マーフAI | AI dubbing in 44 languages |
| Game development | 改変 | Voice morphing for characters |
| Marketing content | マーフAI | Canva and Slides integrations |
💰 Your Budget
Murf AI starts at $19/month for the Creator plan. Altered starts at $30/month. If you need basic text to speech on a tight budget, Murf AI gives you more voices for less money.
🔌 Your Tech Stack
Murf AI plugs into Canva, Google Slides, and PowerPoint. Altered works as a standalone app. If you already use these presentation tools, Murf AI fits your workflow better.
📝 Your Content Type
For YouTube videos, explainer videos, and marketing content, Murf AI is the better pick. For game dialogue, film audio, and character voice work, Altered’s morphing features shine.
🎓 Your Experience Level
Murf AI has an easy to use interface that beginners can pick up in minutes. Altered has a steeper learning curve because of its advanced voice morphing and editing tools.
🆓 Free Trials and Demos
Altered offers a free plan with basic features. Murf AI gives you 10 minutes of free generation. Try both before you commit. Start with the free options and test your specific use case.
🛟 Support Options
Murf AI offers email support, a help center, and priority support on higher plans. Altered provides customer support and a help center. Both platforms have online documentation for self-service help.
Switching Guide
Already using one of these tools? Here’s what to expect if you switch.
🔄 Switching from Murf AI to Altered?
✅ What you’ll gain:
- Voice morphing that preserves your emotional performance
- Real-time voice changer for live calls and streaming
- 14 speaking styles for more expressive voiceovers
❌ What you’ll lose:
- 120+ voice library with 20+ language support
- Canva, Google Slides, and PowerPoint integrations
- AI dubbing in 44 languages
📋 How to switch:
- Export all your audio files from Murf AI projects
- Sign up for Altered’s free plan to test the interface
- Upgrade to Creator plan and import your scripts
🔄 Switching from Altered to Murf AI?
✅ What you’ll gain:
- 120+ realistic voices in 20+ languages
- AI dubbing for translating videos into 44 languages
- Direct integrations with Canva and Google Slides
❌ What you’ll lose:
- Voice morphing for character voice creation
- Real-time voice changer for live communication
- Advanced audio editing and voice cleaning tools
📋 How to switch:
- Download all audio projects from Altered Studio
- Sign up for Murf AI’s free tier to preview voices
- Upgrade to Creator plan and recreate your voiceovers
最終評決
| カテゴリ | 勝者 |
|---|---|
| 💰 Pricing | マーフAI |
| 🎤 Voice Library | マーフAI |
| ⚡ Text-to-Speech Quality | マーフAI |
| 🎭 Voice Morphing | 改変 |
| 🔴 Real-Time Voice Change | 改変 |
| 🎬 Video & Dubbing | マーフAI |
| 🔌 Integrations | マーフAI |
| 🎧 Audio Editing | 改変 |
| 🏆 Overall Winner | マーフAI |
🏆 WINNER: Murf AI
Murf AI wins 5 out of 8 categories.
Best for: Content creators, marketers, e-learning professionals, and teams who need studio quality voiceovers fast.
Murf AI and Altered are two very different AI voice tools.
Murf AI is built for turning text into professional voiceovers at scale.
It shines for YouTube videos, e-learning courses, and marketing content.
The 120+ voice library and 20+ language support make it hard to beat.
Integrations with Canva and Google Slides save even more time.
Altered is built for transforming voice recordings into new characters.
It is excellent for game developers and film producers who need voice morphing.
The real-time voice changer is perfect for streamers and gamers.
The 14 speaking styles add emotional depth that most tools cannot match.
However, if you need a full voice generation platform with more voices, more languages, and more integrations, Murf AI is the better choice.
It delivers better value for most content creators and businesses.
Now, go out and create amazing voice content!
More of Murf AI Compared
Here’s how Murf AI stacks up against other competitors:
Murf AI vs イレブンラボ
Murf AI wins on: Video editing, Canva integration, enterprise security
ElevenLabs wins on: Voice realism, emotional expressiveness, lower entry price
Murf AI vs ヒューム
Murf AI wins on: Voice library size, video editor, language coverage
Hume wins on: Emotional AI research, sentiment analysis, API flexibility
Murf AI vs Speechify
Murf AI wins on: Voiceover production, AI dubbing, team collaboration
Speechify wins on: Reading assistance, browser extension, audiobook creation
Murf AI vs Play.ht
Murf AI wins on: Enterprise features, video editing, presentation integrations
Play.ht wins on: API flexibility, podcast hosting features
Murf AI vs Lovo AI
Murf AI wins on: Voice count, Canva integration, pronunciation accuracy
Lovo AI wins on: Lower pricing, built-in video creation, wider style range
Murf AI vs 説明
Murf AI wins on: TTS voice library, language coverage, presentation tools
Descript wins on: Full video editing, podcast editing, filler word removal
Murf AI vs リスト番号
Murf AI wins on: Voice quality, video tools, team features
Listnr wins on: Podcast distribution, blog-to-audio conversion
Murf AI vs ポッドキャスト
Murf AI wins on: TTS voices, dubbing, enterprise compliance
Podcastle wins on: Podcast recording, remote interviews, audio leveling
Murf AI vs ダプダブ
Murf AI wins on: Pronunciation accuracy, integrations, security certifications
Dupdub wins on: Lower pricing, digital avatar creation
Murf AI vs ウェルサイドラボ
Murf AI wins on: Video editing, language count, app integrations
WellSaid Labs wins on: Voice consistency, brand voice creation
Murf AI vs リボイス
Murf AI wins on: Voice quality, video tools, enterprise features
Revoicer wins on: One-time payment option, simpler pricing
Murf AI vs リードスピーカー
Murf AI wins on: Content creation tools, video editor, pricing transparency
ReadSpeaker wins on: Accessibility features, embedded web reader
Murf AI vs ナチュラルリーダー
Murf AI wins on: Voiceover production, AI dubbing, team collaboration
NaturalReader wins on: Document reading, Chrome extension, OCR scanning
Murf AI vs スピーチロ
Murf AI wins on: Voice count, language support, regular updates
Speechelo wins on: One-time purchase price, simple interface
Murf AI vs TTS OpenAI
Murf AI wins on: Voice variety, video editing, presentation integrations
TTS OpenAI wins on: API simplicity, developer community, cost per character
More of Altered Compared
Here’s how Altered stacks up against other competitors:
Altered vs Hume
Altered wins on: Voice morphing, real-time voice changer, audio editing
Hume wins on: Emotion detection, research-grade AI, conversation analysis
Altered wins on: Voice morphing, voice cloning, speaking styles
Speechify wins on: Reading assistance, browser extension, mobile app
Altered wins on: Voice morphing, real-time voice changing, speaking styles
Descript wins on: Video editing, podcast publishing, screen recording
Altered wins on: Voice morphing, real-time changer, audio editor
ElevenLabs wins on: Voice realism, language count, lower entry price
Altered vs Play.ht
Altered wins on: Voice morphing, voice training, live voice changing
Play.ht wins on: TTS voice library, API features, podcast tools
Altered wins on: Voice morphing, real-time voice changer, audio editing
Lovo wins on: More voices, video creation, lower pricing
Altered wins on: Voice morphing, voice cloning, speaking styles
Listnr wins on: Podcast tools, blog-to-audio, distribution features
Altered wins on: Voice morphing, real-time changer, voice training
Podcastle wins on: Remote recording, podcast hosting, audio leveling
Altered wins on: Voice morphing, audio editor, professional voice tools
Dupdub wins on: Digital avatars, lower pricing, video creation
Altered wins on: Voice morphing, real-time changer, speaking styles
WellSaid Labs wins on: TTS quality, brand voice training, enterprise tools
Altered wins on: Voice morphing, voice cloning, audio editing suite
Revoicer wins on: One-time payment, simpler pricing model
Altered wins on: Voice morphing, real-time changer, creative tools
ReadSpeaker wins on: Web accessibility, embedded TTS reader
Altered wins on: Voice morphing, cloning, professional audio tools
NaturalReader wins on: Document reading, OCR, Chrome extension
Altered vs Speechelo
Altered wins on: Voice morphing, real-time changer, voice training
Speechelo wins on: One-time purchase, simplicity, lower cost
Altered vs TTSOpenAI
Altered wins on: Voice morphing, audio editor, speaking styles
TTSOpenAI wins on: API pricing, developer tools, community size
よくある質問
Can I use Murf AI for free?
Yes. Murf AI offers a free tier with 10 minutes of voice generation. But you cannot download the audio. The free plan is for testing voices only. You need a paid plan starting at $19/month for downloads and commercial use.
Is Altered AI free?
Yes. Altered offers a free plan with basic voice editing features. But the free version is very limited. You need the Creator plan at $30/month to access voice cloning, morphing, and all speaking styles.
Which is the best AI voice generator?
For text to speech voiceovers, Murf AI is one of the best options with 120+ voices in 20+ languages. For voice morphing and character creation, Altered is a better choice. Your best pick depends on your specific use case.
Is AI voice cloning illegal?
AI voice cloning itself is not illegal in most places. But using a cloned voice without the owner’s consent can violate laws. Both Murf AI and Altered require consent from the voice owner. Always check your local regulations before cloning any voice.
What is the most realistic AI voice changer?
Altered’s real-time voice changer is among the most realistic options for live voice changing. For text to speech voice generation, Murf AI produces some of the most natural sounding voices available in 2026.
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