⚡ Quick Verdict:
- 価格: ElevenLabs starts at $5/month while TTSOpenAI uses pay-as-you-go at $0.00004 per credit.
- 最適な用途: ElevenLabs for AI voice cloning and high quality narration. TTSOpenAI for OpenAI voices in a calm, user friendly interface.
- 主な違い： ElevenLabs offers a full ai voice generator with voice design and dubbing. TTSOpenAI focuses on premium openai voices through just text input.
- Our pick: ElevenLabs is the best ai voice generator overall, but TTSOpenAI wins on pricing flexibility.
Picking between ElevenLabs and TTSOpenAI is harder than it looks.
Both promise natural sounding speech with realistic ai voices.
One gives you 1,200+ ai voices and pro voice cloning tools.
The other gives you OpenAI’s premium voices at pay-as-you-go pricing.
So which one fits your project, your budget, and your style?
This comparison breaks down both AI音声ジェネレーター 決定を下すのに役立ちます。
概要
This ElevenLabs vs TTSOpenAI comparison covers pricing, voice quality, key features, and ease of use.
Our writers spent hands-on time with both ai voice generators.
Those observations appear in the “What Our Team Noticed” sections below.
Other sources include published specs, documentation, and verified user reviews.
By the end, you’ll know which ai voice generator fits your needs.
ElevenLabsとは何ですか？
ElevenLabs is an ai voice generator and speech synthesis platform.
It uses deep learning techniques to create natural ai voices and natural voices from written text.
このプラットフォームは テキスト読み上げ, voice cloning, AI Dubbing, and voice agents under different pricing plans.
Eleven Labs AI was founded in 2022 and now serves a huge global audience.
It is built for creators, developers, and brands who need professional voiceovers.
イレブンラボ
The best ai voice generator for realistic ai voices. Speech synthesis in 29+ languages. Pro voice cloning starts at the Creator tier.
ElevenLabsの価格設定
2026年におけるElevenLabsのコストは以下の通りです。詳しく見ていきましょう。
| プラン | 価格 | 最適な用途 |
|---|---|---|
| 無料 | $0 | Testing voice quality and exploring the platform |
| スターター | 月額5ドル | Solo creators wanting commercial rights |
| クリエイター | 月額11ドル | Professional grade voice cloning for content creators |
| プロ | 月額99ドル | Production teams and high-volume voice projects |
Pricing verified April 2026.
無料トライアル: Yes. The Free plan gives you 10,000 credits per month with no credit card required.
返金保証: ElevenLabs does not advertise a formal money-back guarantee, but you can cancel any paid plan at any moment from your account.
📌 注記： Each credit equals one character of text. The free tier gets about 10 minutes of voice generation. Paid plans roll over unused credits for up to 2 months.
⚠️ 警告： The free tier has no commercial license. You must log into a paid plan before using audio in monetized content. Overage fees kick in on Creator plans if you exceed your credit limit.
ElevenLabsの主なメリット
Here’s what makes ElevenLabs worth considering as an ai voice generator:
- リアルな音声生成： The platform produces the most advanced ai voices on the market. The latest Eleven v3 model supports complex dialogue, accents, and emotion through emotional tags.
- AI音声クローニング: Create a custom voice from short audio samples. Instant voice cloning works with just one minute of audio. Professional voice cloning produces a hyper-realistic voice twin.
- AI吹き替え＆翻訳： Automatically translate and re-voice video content into more than 30 languages. It preserves the original speaker’s tone, emotion, and timing.
- 対話型AIエージェント： Build intelligent, real-time voice and chat agents for customer support, sales, and education. Supports integration with Slack and Google Calendar.
- Voice Design & Sound Effects: Generate studio-grade music and custom sound effects from natural language prompts. 想像する the perfect voice and the platform helps you create it.
- ElevenReaderアプリ： Convert articles, PDFs, and e-books into spoken audio for on-the-go listening. The app converts text aloud from any source and turns written text into audio files for easy listening.
What Our Team Noticed
私たちの 作家 signed up for ElevenLabs and spent several days exploring the voice options. Here’s what stood out from that hands-on time:
ElevenLabsの長所と短所
✅ メリット
- The most advanced ai voices with natural prosody and emotion
- Pro ai voice cloning from short audio samples
- Speech synthesis in 29+ languages with consistent quality
- AI Dubbing supports more than 30 languages and accents
❌ デメリット
- Free plan has no commercial license and requires attribution
- Overage fees on Creator plans can add up fast
- Some users report the API is hard to set up
TTSOpenAIとは何ですか?
TTSOpenAI is a text to speech platform built on OpenAI’s text to speech model.
It lets you convert text into high quality narration using premium openai voices.
You get access to voices like Alloy, Nova, Onyx, and Shimmer.
The service uses the gpt-4o-mini-tts model for natural sounding output.
It is built for creators, developers, and marketing teams on a budget.
TTSOpenAI
Premium openai voices on a pay-as-you-go service. Easy to use interface for content creators. Free tier lets you start without an account.
TTSOpenAIの価格
TTSOpenAI keeps pricing simple with a pay-as-you-go credit model.
| プラン | 価格 | 最適な用途 |
|---|---|---|
| 使った分だけ支払う | 1クレジットあたり0.00004ドル | Occasional voiceovers without a monthly fee |
Pricing verified April 2026.
無料トライアル: Yes. You get free credits to test voice quality. No credit card needed to start using the service.
返金保証: No formal refund policy is listed. Credits never expire, so you can use them when you need them.
📌 注記： Each character of text counts as one credit. The pay-as-you-go service means you only pay for what you generate.
⚠️ 警告： The free tier is limited to 2,000 characters. Heavy users who generate audio daily may overpay compared to a flat subscription elsewhere.
TTSOpenAIの主な利点
Here’s what makes TTSOpenAI worth considering as an ai text to speech tool:
- Premium OpenAI Voices: Access voices like Alloy, Onyx, and Nova. The TTS-1 model is optimized for real-time, low-latency applications. TTS-1-HD is tuned for high-definition voice quality.
- Just Text Input: Paste just text into the input box and generate spoken audio in seconds. No complex setup or fine tune steps required for basic use.
- 開発者向けAPI： Developers can integrate it into apps quickly through the api. Clean documentation makes it great for voice agents and チャットボット.
- カスタムボイスメーカー： Create a custom voice from a short audio sample. The feature works well for basic ai voice cloning needs.
- ストーリーメーカー: Generate long-form spoken audio for audiobooks and e learning. The platform handles pauses, pronunciation, and pacing automatically.
- 多言語サポート: Generate speech in multiple languages. OpenAI TTS models are optimized for English but support many other languages and accents.
What Our Team Noticed
Our writer signed up for TTSOpenAI and tested it on real voiceover projects. Here’s what stood out from that hands-on time:
TTSOpenAIの長所と短所
✅ メリット
- Pay-as-you-go with no monthly fee or commitment
- Easy to use interface for beginners
- Access to OpenAI’s premium voices including Alloy and Nova
- Developer-friendly API for quick integration
❌ デメリット
- Limited voice options compared to ElevenLabs
- Basic emotion and expressive control for dramatic work
- No built-in editor for syncing audio to video
機能比較
Ready to dive into a detailed comparison of ElevenLabs vs TTSOpenAI? Let’s go feature by feature so you can pick the right text to speech technology for your needs.
| 特徴 | イレブンラボ | TTSOpenAI |
|---|---|---|
| 開始価格 | 月額5ドル | 1クレジットあたり0.00004ドル |
| 無料枠 | ✅ 10,000 credits | ✅無料クレジット |
| 音声オプション | ✅ 1,200+ voices | ✅ OpenAI voices |
| AI音声クローン | ✅ Pro-grade cloning | ✅ Basic custom voice |
| AIダビング | ✅ 30以上の言語に対応 | ❌ |
| 対話型AIエージェント | ✅ | ❌ |
| APIアクセス | ✅ Starter and above | ✅ すべてのプラン |
| Voice Design & Sound Effects | ✅ | ❌ |
| 最適な用途 | Pro voice cloning, dubbing, voice agents | Budget OpenAI voices, just text input |
1. Voice Quality and Natural Sounding Speech
Voice quality is the number one reason people pick an ai voice generator. Both platforms produce natural sounding ai voices, but the bar is set differently.
イレブンラボ: ElevenLabs is widely recognized as having some of the most advanced ai voices on the market. Voice synthesis uses deep learning trained on massive audio-text pairs. The latest Eleven v3 model captures intonation, rhythm, and human like voices with proper emotion tags. Output quality at 192kbps or 44.1kHz PCM is professional grade. Each ai generated voice sound has a natural sounding voice that feels close to human speech.
TTSOpenAI: TTSOpenAI taps into OpenAI’s text to speech technology directly. The gpt-4o-mini-tts model is noted for its natural-sounding output and customization capabilities. Voices like Alloy, Nova, and Shimmer feel calm and smooth. The TTS-1 model has the lowest latency, while TTS-1-HD targets higher voice quality. Each ai generated voice and computer generated voice sounds close to natural human speech, and the ai generated voices feel less robotic than computer generated voices of the past.
⚠️ 警告： Free tier audio from either platform may sound slightly less polished than paid output. Always test a sample before committing.
2. AI Voice Cloning and Custom Voices
AI voice cloning lets you create a digital copy of your own voice. Neural voice cloning allows the creation of unique voices from audio samples as brief as 60 seconds.
イレブンラボ: For voice cloning, ElevenLabs leads the ai voice generators market. Instant Voice Cloning needs just 1-5 minutes of audio. Professional Voice Cloning needs 30 minutes minimum and produces a hyper-realistic voice twin. That cloning system can capture a speaker’s voice with full expressive range. The platform has clear instructions for uploading samples, and it has safety measures in place to prevent misuse. The result is a generative voice that holds your own voice characteristics across long passages.
TTSOpenAI: TTSOpenAI’s Custom Voice Maker can create custom voices from short audio samples. It is not as advanced as ElevenLabs, but it works well for basic ai voice cloning needs. Best practices include obtaining consent from the person whose voice is being cloned, since AI voice cloning is illegal in some regions without permission.
3. Voice Options and Languages
The range of voices and supported languages matters for a global audience. Both platforms support multiple languages, but the depth differs.
イレブンラボ: ElevenLabs supports speech synthesis in 29 languages with a huge stock voice library of different voices. You can search for voices by tone, accent, and speaking style. There are voices for a young male narrator, an energetic ad reader, a gentle audiobook host, and more. Expressive control covers tone, speed, pauses, and emotion. Multiple speaking styles are available, and you can even generate ai voices that suit different age groups.
TTSOpenAI: TTSOpenAI offers OpenAI’s six premium voices including Alloy, Echo, Nova, Onyx, Fable, and Shimmer. OpenAI’s text-to-speech service supports multiple languages for generating speech. Voice options are fewer, but each one sounds professional grade. The platform allows users to generate speech in multiple languages with consistent quality. The available speech voices cover the main accents and produce high quality voice overs for marketing teams.
4. AIによる吹き替えと翻訳
AI Dubbing lets you re-voice video content in different languages. This is a major feature for content creators with a global audience.
イレブンラボ: AI Dubbing & Translation automatically translates and dubs video content into more than 30 languages. The system converts text and source audio into a new language while preserving the original speaker’s tone, emotion, and timing. Media and entertainment teams use it for audiobooks, podcasts, and dubbing animated explainer videos and training videos. The team is constantly releasing model updates that improve quality across languages.
TTSOpenAI: TTSOpenAI does not offer a built-in dubbing feature. You can generate audio files in different languages by changing the input text, but there is no automatic translation step. For dubbing-heavy workflows, this is a gap.
5. Conversational AI Agents and Voice Agents
Voice agents enable virtual assistants that respond in real time. Both platforms support voice generation for assistants, but the level of integration varies.
イレブンラボ: Conversational AI Agents can interact in real-time with low latency. They support various integrations like Slack and Google Calendar. Use cases include customer support, sales, and education. Developers can integrate the platform’s api into apps and IVR systems for full voice ai workflows.
TTSOpenAI: TTSOpenAI provides API keys and the api for voice generation, which developers can integrate into voice agents. It supports real-time streaming of audio to minimize delays in playback. But it does not offer a complete agent framework with built-in scenarios, tool calls, or session memory. You’d build that layer yourself.
6. Voice Design and Sound Effects
Voice design lets you imagine and generate a voice that does not exist yet. This is a creative feature for unique projects.
イレブンラボ: Voice Design lets you create unique voices from text prompts alone. AI Music and Sound Effects Generation creates studio-grade music and custom sound effects from natural language prompts. Game developers use it for dynamic NPC dialogue. Animators use it for character voices.
TTSOpenAI: TTSOpenAI does not have a voice design tool. You pick from the six built-in openai voices and customize speed, pauses, and pronunciation. There is no sound effects generator either. For pure narration and voiceovers, the existing voice library is enough for most users.
7. Ease of Use and User Friendly Interface
Ease of use shapes how fast you can ship a voiceover. Both platforms have an easy to use interface, but they target different users.
イレブンラボ: The dashboard packs a lot of features into one platform, which can feel busy at first. Once you find your way around, generating audio takes just a moment. Some G2 reviews note that the api can be hard to configure for non-technical users.
TTSOpenAI: TTSOpenAI has a user friendly interface that beginners can use right away. The Input Text Pro feature is just text in, audio out. No setup required. You can generate audio without even creating an account on the free tier.
8. API Access and Integration
Developers integrate text-to-speech services into their applications using APIs. Both platforms expose an api, but the developer experience is different.
イレブンラボ: The api is available from the Starter tier upward. It supports voice cloning, dubbing, agents, and real-time streaming. Rate limits and concurrent request caps differ by plan. Teams building real-time apps often pick Pro or Scale for stable production use.
TTSOpenAI: The api is clean and well documented. Developers can integrate it into apps quickly, and they get fast voice generation time on each request. OpenAI’s TTS API supports real-time streaming of audio to minimize delays in playback. It is great for voice agents, chatbots, and ivr systems where you only need text to speech. The TTS-1 model has the lowest latency. The platform can be integrated with virtual assistants and apps in just a few hours of setup.
9. Use Cases and Workflows
Different teams need different things from text to speech software. The right pick depends on what you’re trying to create.
イレブンラボ: ElevenLabs supports media and entertainment for voicing audiobooks, podcasts, and films. Content creators use it for ai voiceovers on YouTube videos and animated explainer videos. 仕事 teams automate customer support with realistic voices and consistent quality. The platform also works for e learning, gaming, training videos, and Google Play Books style audio. ElevenReader app converts articles and PDFs into audio. For example, marketing teams use it to produce realistic text reads for product launches. Artificial intelligence software like this saves hours of recording time. Each audio file can be exported in MP3 or WAV format.
TTSOpenAI: TTSOpenAI fits content creators making quick voiceovers, e learning narration, and accessible content for users with disabilities. It works for podcast intros, social media posts, and product demos. Audiobook publishers can use the Story Maker for long form spoken audio. Developers also use it to build voice ai features into virtual assistants. Artificial intelligence powers each voice, and you get complete control over speed, tone, and pauses. The platform also supports text to speech tts for accessibility apps that read text aloud.
10. 価格設定とコスト
料金プランを並べて比較してみましょう。
| プラン | イレブンラボ | TTSOpenAI |
|---|---|---|
| 無料 | 10,000クレジット/月 | Free credits to test |
| 入場料支払い済み | 月額5ドル（スタータープラン） | $0.00004/credit (Pay-as-Go) |
| 中級クラス | 月額11ドル（クリエイター向け） | N/A — Pay-as-Go scales |
| プロ | 月額99ドル（プロプラン） | N/A — Pay-as-Go scales |
イレブンラボ: The subscription model gives predictable costs and unlocks features like pro voice cloning at the Creator tier. The Free plan covers testing. Starter at $5/month unlocks commercial use, which is the moment most creators upgrade. Pro at $99/month suits production teams. ElevenLabs offers a hybrid pricing model that combines monthly subscriptions with character-based usage.
TTSOpenAI: The pay-as-you-go service means there is no monthly fee. You buy credits and convert text to speech only when you need it. For occasional voice projects, this is extremely flexible. For heavy daily use, a flat subscription elsewhere may be cheaper. The pricing plans make it easy for anyone to get started without commitment.
さまざまなシナリオ
| 必要な場合は | 選ぶ | なぜ |
|---|---|---|
| 予算が限られている | TTSOpenAI | No monthly fee, pay-as-you-go |
| Pro voice cloning | イレブンラボ | Hyper-realistic voice twin from 30 min audio |
| AI Dubbing in 30+ languages | イレブンラボ | Built-in translation and re-voicing |
| Just text to spoken audio fast | TTSOpenAI | Just text input, no setup needed |
| Voice agents and conversational AI | イレブンラボ | Full agent framework with integrations |
| 初心者向けのインターフェース | TTSOpenAI | Simplest user friendly interface |
| OpenAI’s premium voices specifically | TTSOpenAI | Direct access to Alloy, Nova, Onyx |
💰 あなたの予算
TTSOpenAI wins if you generate audio occasionally and want zero monthly commitment. ElevenLabs costs more long-term, but the subscription unlocks features like dubbing and pro voice cloning.
🔌 あなたの技術スタック
Both platforms expose an api, so integration is smooth either way. ElevenLabs has deeper integration with tools like Slack and Google Calendar through its agent framework.
📝 あなたの文章スタイル
If you write expressive scripts with emotional beats, ElevenLabs handles the nuance better. For straightforward narration, TTSOpenAI’s openai voices sound clean and consistent.
🎓 あなたの経験レベル
Beginners may find TTSOpenAI’s user friendly interface easier to learn. ElevenLabs has more features but takes longer to master, especially the api side.
🆓 無料トライアルとデモ
Both offer a free tier to test voice quality. ElevenLabs gives 10,000 credits per month without a credit card. TTSOpenAI offers free credits for testing too.
🛟 サポートオプション
ElevenLabs offers tiered support with priority response on higher plans. TTSOpenAI offers community support and email help. Enterprise users on either platform can get dedicated channels.
切り替えガイド
既にこれらのツールのいずれかをご利用ですか？切り替える場合、どのような変更が予想されますか？
🔄 ElevenLabsからTTSOpenAIに切り替えますか？
✅ 得られるもの：
- No monthly fee with pay-as-you-go credits
- Direct access to OpenAI’s premium voices
- Simpler easy to use interface for quick voiceovers
❌ 失うもの：
- Pro voice cloning with hyper-realistic results
- AI Dubbing across 30+ languages
- Voice design and sound effects generation
📋切り替え方法：
- Download your existing audio files from ElevenLabs
- Create a TTSOpenAI account and verify your email
- Buy a credit pack and regenerate your scripts
🔄 TTSOpenAIからElevenLabsに切り替えますか？
✅ 得られるもの：
- 1,200+ ai voices with deeper expressive control
- Pro voice cloning with your own voice
- AI Dubbing and conversational ai agents
❌ 失うもの：
- Pay-as-you-go flexibility with no monthly fee
- Direct access to the original OpenAI voices
- The simplest beginner workflow
📋切り替え方法：
- Save your TTSOpenAI audio files from your account
- Sign up at ElevenLabs and pick the Starter or Creator plan
- Recreate your voice projects using the Studio editor
What Our Review Didn’t Cover
This comparison focused on individual creators, small teams, and developers. We didn’t test enterprise SSO, HIPAA compliance, or custom voice training agreements. Our observations are based on April 2026 versions of both platforms and features may have changed since then. If you generate audio at very large scale, your priorities may differ from what we’ve covered here.
最終評決
| カテゴリ | 勝者 |
|---|---|
| 💰価格設定の柔軟性 | TTSOpenAI |
| 🎙️ 音声品質 | イレブンラボ |
| 👯 AI Voice Cloning | イレブンラボ |
| 🌍 Languages & Dubbing | イレブンラボ |
| 👶 使いやすさ | TTSOpenAI |
| 🤖 Voice Agents | イレブンラボ |
| 🔌 APIと連携 | イレブンラボ |
| 🏆総合優勝 | イレブンラボ |
🏆 WINNER: ELEVENLABS
ElevenLabsは7部門中5部門で受賞した。
最適な用途: Realistic ai voices, professional voice cloning, AI Dubbing, and voice agents at scale.
ElevenLabs and TTSOpenAI are two very different ai voice generators. They target different users with different needs.
ElevenLabs is the best ai voice generator overall. It offers the most advanced ai voices, deep voice cloning, AI Dubbing across multiple languages, and a full agent framework with integrations like Slack and Google Calendar. The platform also supports speech tools and speech software workflows for teams.
TTSOpenAI is the best fit for budget-conscious creators who want OpenAI’s premium voices on a pay-as-you-go service. The just text input model and easy to use interface make it ideal for fast voiceovers and developers building voice ai features.
TTSOpenAI is excellent for occasional voice projects and quick ai voiceovers without a monthly fee.
However, if you need a complete ai voice generator with pro voice cloning, dubbing, and conversational ai agents, ElevenLabs is the better choice for most users.
ElevenLabsの比較をもっと見る
Here’s how ElevenLabs stacks up against other ai voice generator competitors:
ElevenLabs vs マーフAI
ElevenLabsが勝利した点： Deeper voice cloning with hyper-realistic results, broader voice library, and AI Dubbing across 30+ languages.
Murf AIが勝利した点： Built-in video and timeline editor, simpler workflow for training videos, and predictable pricing for teams.
ElevenLabs vs Speechify
ElevenLabsが勝利した点： Professional grade voice synthesis, deeper voice cloning, and richer api for developers building voice agents.
Speechifyが勝利した点： Top-rated reader app for consuming written content, focused accessibility features, and a polished mobile experience.
ElevenLabs vs PlayHT
ElevenLabsが勝利した点： Better voice cloning fidelity, smoother emotional range, and stronger dubbing pipeline for video creators.
PlayHT wins on: Larger raw voice library at 800+ voices, broader accent and language coverage, and explainer video templates.
ElevenLabs vs LOVO
ElevenLabsが勝利した点： More expressive voice generation, deeper api capabilities, and stronger conversational ai agent framework.
LOVO wins on: 内蔵 ビデオエディター in Genny, simpler pricing for small teams, and ready-made templates for social media content.
TTSOpenAIの比較
Here’s how TTSOpenAI stacks up against other text to speech competitors:
TTSOpenAIが勝利した点： More natural and professional voiceovers, simpler pay-as-you-go pricing, and direct access to OpenAI voices.
Listnrが勝利した点： 600+ voices across 75+ languages, a more intuitive user interface for beginners, and built-in podcast hosting tools.
TTSOpenAIが勝利した点： Premium openai voices for marketing voiceovers, clean developer api, and simpler pricing per character.
NaturalReaderが優れている点： Long-form accessibility features for screen readers, document import for Google Docs and PDFs, and education-focused tools.
TTSOpenAI vs 説明
TTSOpenAIが勝利した点： Cheaper for pure voice generation, faster setup with just text in, and access to native OpenAI voices.
説明文が勝つ点： Full podcast and video editing suite, transcript-based editing, and an Overdub voice cloning feature with timeline integration.
TTSOpenAI vs ポッドキャスト
TTSOpenAIが勝利した点： Lighter, faster workflow for just text to spoken audio, lower commitment with pay-as-you-go, and OpenAI’s voice quality.
Podcastleが勝利した点： Complete podcast studio with recording, editing, and noise removal in one platform, plus team collaboration features.
よくある質問
ElevenLabs AIは無料ですか？
Yes, ElevenLabs has a permanent free tier with 10,000 credits per month. The free plan covers about 10 minutes of natural sounding speech but does not include commercial usage rights.
ttsopenaiは無料で利用できますか？
Yes, TTSOpenAI has a free tier with credits to test voice quality. After that, you pay as you go at $0.00004 per credit with no monthly fee or subscription required.
最もリアルなAI音声とは？
ElevenLabs is widely considered to have the most realistic ai voices in 2026. Its Eleven v3 model supports emotion tags, accents, and complex dialogue for natural human voice output.
ElevenLabsは私の声をクローンできますか？
Yes, Instant Voice Cloning needs just 1 minute of audio. Professional Voice Cloning needs 30 minutes and produces a hyper-realistic voice twin nearly identical to the original speaker.
OpenAIのTTSはどの程度優れているのか？
OpenAI TTS is very good. The voices sound natural with proper intonation, and the gpt-4o-mini-tts model is noted for its natural-sounding output and customization options for tone and emotion.
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