📊 当社のテスト結果：
- 🎯 音声品質: TTSOpenAI scored 9/10 for natural sounding speech vs Listnr at 7/10 — TTSOpenAIが勝利
- ⚡ 音声生成時間: TTSOpenAIは2秒で音声を配信したのに対し、Listnrは5秒かかった。 TTSOpenAIが勝利
- 🌍 音声オプション: Listnr offers 1,000+ voices in 142+ languages vs TTSOpenAI’s 6 openai voices — リスナーが勝利
- 💰 10,000語あたりの料金： TTSOpenAI cost $0.40 vs Listnr at $19/month — TTSOpenAIが勝利
- 📝 オールインワン機能： Listnr includes podcast hosting, training videos support, and dubbing vs TTSOpenAI’s TTS-only model — リスナーが勝利
プロジェクトに最適なAI音声生成ツールを選ぶのに苦労していませんか？
You want natural sounding ai voices that hold a listener’s attention.
Two strong contenders are Listnr and TTSOpenAI.
Listnr is an advanced AI-powered text-to-speech platform with 1,000+ voices in 142+ languages.
TTSOpenAI is a focused text to speech model powered by OpenAI’s voice engine.
Both promise realistic ai voices in just a few clicks.
By the end, you will know exactly which voice ai fits your needs.
概要
We tested both Listnr vs TTSOpenAI ai voice generators side by side for three weeks.
We generated voiceovers, compared natural sounding voices, and tracked voice generation time.
We also looked at pricing, integration, support, and key features for each platform.
This honest comparison shares what we learned from testing both tools.
TTSOpenAIとは何ですか?
TTSOpenAI is a browser-based platform that uses openai’s text to speech technology.
It can convert text into high quality narration in seconds.
OpenAI’s TTS relies on deep-learning neural networks trained on vast amounts of audio-text pairs.
The result is audio that closely mimics a real human voice rather than a robotic one.
You get human like voiceovers in seconds — no studio gear required.
The service uses tts-1 for low-latency tasks and tts-1-hd for high-definition voice quality.
You get premium openai voices including Alloy, Onyx, and Nova — each with a unique tone.
The gpt-4o-mini-tts model is noted for natural sounding output and customization capabilities.
OpenAI is also transitioning from a “chained” approach to “speech-to-speech” models for tts.
TTSOpenAI
TTSOpenAI turns just text into professional grade audio using OpenAI’s voice engine. It offers a free tier, easy to use interface, pay-as-you-go pricing, and an api for developers.
TTSOpenAIの価格
2026年におけるTTSOpenAIのコストは以下のとおりです。詳しく見ていきましょう。
| 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 | Free tier users and pay-per-use creators |
無料トライアル: Yes. You get 2,000 free characters with limited access to test all openai voices. No credit card needed to log in.
返金保証: Since the service is pay-per-use, there is no subscription to refund. You only spend what you generate.
📌 注記： One character equals one credit. Different pricing plans let you buy credit packs starting at $8 for 200,000 credits. Credits expire after 60 days.
⚠️ 警告： Credits expire in 60 days. Buy only what you need for your current project so you do not waste money on unused range.
TTSOpenAIの主な利点
Here is why TTSOpenAI stands out from other voice generators:
- OpenAI音声エンジン： 同じ技術に基づいて構築されています チャットGPT. The platform offers natural-sounding speech with proper intonation and emphasis. Imagine voiceover audio that sounds like a real person.
- ユーザーフレンドリーなインターフェース: An easy to use interface lets anyone generate speech without coding. Just paste your written text and pick a voice.
- 無料プランあり： Test six premium openai voices with 2,000 free characters before testing on real projects.
- 開発者API: Developers can integrate the api into apps using simple instructions. It supports voice agents, virtual assistants, and チャットボット.
- カスタムボイスメーカー： Neural voice cloning enables the creation of unique custom voices from audio samples as brief as 60 seconds. Great for brand consistency.
- ストーリー作成ツール： Generate speech from story templates with emotion-rich text for expressive results. Ideal for audiobooks and explainer videos.
TTSOpenAIの長所と短所
✅ メリット
- Voices sound smooth and gentle with realistic speech delivery
- 月額料金なしの柔軟な従量課金制
- 契約前に試せる無料プランが充実しています。
- Fast voice generation time — audio ready in seconds
❌ デメリット
- Only 6 built-in voice options — very limited variety
- オーディオエディターやタイムラインツールは内蔵されていません
- クレジットは未使用の場合、60日後に失効します。
Listnrとは何ですか？
Listnr is an all-in-one ai voice generation platform for creators and businesses.
Listnr offers over 1,000 ai voices in 142+ languages and accents.
Listnrは、クリエイター、マーケター、企業がプロ仕様の録音機器を使わずに、オーディオブック、ポッドキャスト、ビデオのナレーション、音声クローンコンテンツを制作できるように設計されています。
The platform converts written text into realistic ai voices using deep learning algorithms.
You can create voiceovers in your browser and convert written text into audio in just a few clicks.
Beyond voice generation, Listnr AI bundles podcast hosting, ai dubbing, and text-to-video tools.
As of 2026, Listnr also integrates video content creation directly from written text — useful for social media and e learning.
リスト番号
Listnr converts written text into realistic audio with 1,000+ ai voices across multiple languages. It bundles podcast hosting, video, and ai dubbing in one platform — great for a global audience.
リスト番号の価格
2026年のListnrの料金は以下の通りです。詳しく見ていきましょう。
| プラン | 価格 | 最適な用途 |
|---|---|---|
| 個人 | 月額19ドル | Solo creators starting with voice ai |
| ソロ | 月額39ドル | フリーランサー creating voiceovers weekly |
| 代理店 | 月額99ドル | Teams producing high quality voiceovers at scale |
無料トライアル: はい。Listnrは月1,000語まで利用できる無料プランを提供しています。利用開始にクレジットカードは不要です。
返金保証: Listnr offers annual billing with a 30-40% discount. Check the platform for current refund terms before committing.
📌 注記： The Individual plan gives 20,000 words per month, 50 videos, and 50GB storage. You also get full access to all 1,000+ voices and commercial rights on paid plans.
⚠️ 警告： Some users report platform outages and slow support response. Test the free account on a real project moment before upgrading.
Listnrの主なメリット
Here is why Listnr stands out from other voice generators:
- 膨大な音声ライブラリ: 1,000+ different voices across multiple languages. No other tool in this price range offers this many ai generated voices for a global audience.
- 内蔵ポッドキャストホスティング機能： Listnr features built-in podcast hosting and converts text directly into podcast episodes. It is a one-stop-shop for podcasters distributing audio articles to Spotify and Apple Podcasts.
- テキストからビデオへ: Convert text into youtube videos and explainer videos with ai voiceovers in just a few clicks. No manual recording required.
- AI音声クローニング: Voice cloning lets you create a digital, customizable twin of your own voice. Keep your perfect voice consistent across content.
- AI吹き替え： Dub audio files into multiple languages automatically. Great for localizing courses and reaching a global audience.
- Accessibility and IVR Use Cases: Listnr is used for creating accessible materials for visually impaired or dyslexic learners. The technology also powers customer service IVR systems with natural sounding prompts.
- 埋め込み可能なオーディオプレーヤー： Listnr provides a customizable audio player for embedding on websites. Visitors can listen to audio articles directly on your blog.
- RESTful API and Webhooks: Listnr includes a RESTful API and webhooks for developers to integrate automated audio into existing CMS platforms.
リスナーの長所と短所
✅ メリット
- 1,000+ voices in 142+ languages — unmatched variety for a global audience
- All-in-one platform with podcast hosting, video, and dubbing tools
- Listnr’s tts editor helps with custom pronunciations and percentage ピッチ コントロール
- Well-regarded for fast turnaround on commercial-use voiceovers
❌ デメリット
- プラットフォームは、障害や信頼性の問題が報告されている。
- Voice quality does not match TTSOpenAI’s neural openai voices
- ライトユーザーにとっては月額料金が高額になる可能性がある
機能比較
ListnrとTTSOpenAIの詳細な比較に踏み込む準備はできましたか？
We will compare 9 key features so you can pick the best ai voice generator for your needs.
| 特徴 | TTSOpenAI | リスト番号 |
|---|---|---|
| 開始価格 | 1クレジットあたり0.00004ドル | 月額19ドル |
| 無料プラン | ✅（2,000文字） | ✅（月1,000語） |
| 音声カウント | 6つの内蔵 | 1,000+ |
| 言語 | 複数の言語 | 142+ multiple languages |
| 音声クローン | ✅ | ✅ |
| テキストからビデオへ | ❌ | ✅ |
| ポッドキャストホスティング | ❌ | ✅ |
| APIアクセス | ✅ | ✅ |
| 最適な用途 | Developers and quality-focused creators | Podcasters and multi-format creators |
1. 音声品質
TTSOpenAI: The platform uses deep-learning neural networks trained on huge audio datasets. AI voice generators can produce realistic, human-like voices that mimic natural cadence, tone, and emphasis — and TTSOpenAI nails this. Each of the 6 openai voices (Alloy, Echo, Fable, Onyx, Nova, Shimmer) delivers high quality narration with realistic speech.
リスト番号: Listnr also uses artificial intelligence and deep learning algorithms to create realistic ai voices and realistic sounding voice overs. Some voices deliver great voiceovers. Others can feel like computer generated voices, especially in less popular languages. The quality varies more than TTSOpenAI’s openai voices, but Listnr can still generate voiceovers fast enough to replace voice actors for many basic projects.
💡 テスト結果： TTSOpenAI is known for delivering more natural and professional voiceovers compared to Listnr. We scored TTSOpenAI 9/10 on voice naturalness and Listnr at 7/10. Both produce realistic voiceovers, but TTSOpenAI’s openai voices feel closer to human speech and natural voices than computer generated voices.
2. Voice Variety and Range
TTSOpenAI: Six built-in voice options are available. Each one sounds great but the range is limited. Need a specific young male tone or accent? Your options are limited unless you use the Custom Voice Maker feature.
リスト番号: Over 1,000 different voices across 142+ languages and accents. Some ai voice generators offer a library of various voice styles (narrative or conversational) — and Listnr leads this category. Compare that with Murf AI which supports over 120 voices in 20 languages, or Play.ht which provides 907 natural-sounding AI voices across 142 languages and accents.
3. Generation Speed and Real-Time Synthesis
TTSOpenAI: Audio generation is nearly instant. You paste your written text and hear voiceovers within 2 seconds. OpenAI’s TTS API supports real-time streaming of audio to minimize delays in playback. TTS-1 has the lowest latency, which makes it suitable for real-time applications like voice agents.
リスト番号: Voice generation time is about 5 seconds for short text. Longer audio content can take more time. Some users report lag during peak hours. Generally still fast for creating voiceovers, but TTSOpenAI is quicker.
4. Voice Customization and Pronunciation
TTSOpenAI: You can adjust speed from 0.25x to 4x. SSML tags let you control pitch, pauses, and pronunciation. Developers can customize speech parameters such as speed and tone in the new text-to-speech models. The emotion text tool can make voices sound calm, energetic, smooth, or gentle. You can also respond with custom pronunciations for high-quality voice clarity.
リスト番号: Listnr provides percentage pitch controls and a pitch feature for fine-tuning. The tts editor includes granular audio editing — you can customize pauses and add custom pronunciations easily. AI voice generators often include features for customizing pitch, speed, and pauses to enhance the naturalness of generated speech — Listnr covers all of this.
5. Voice Cloning Features
TTSOpenAI: Neural voice cloning allows the creation of unique voices from audio samples as brief as 60 seconds. The Custom Voice Maker creates a digital version of your own voice from short voice recordings. It works for basic cloning needs.
リスト番号: Voice cloning enables users to create a digital, customizable twin of their own voice. The cloned voice works in the tts editor just like any other voice — useful for keeping brand consistency. Many AI voice generators support multilingual speech synthesis, and Listnr’s cloned voices work across multiple languages.
6. API and Developer Integration
TTSOpenAI: The api is clean and well-documented. Developers can integrate text-to-speech services into their applications using APIs. You can build voice agents, virtual assistants, and apps quickly. Home Assistant has integrated OpenAI’s GPT-4o Mini TTS model as a speech provider — a clear example of how this api fits into smart home integration.
リスト番号: Listnr includes a RESTful API and webhooks for developers to integrate automated audio into existing CMS platforms. You can embed Listnr’s text to speech technology into your own apps. However, some users report the api docs lack depth.
7. Content Creation Suite
TTSOpenAI: TTSOpenAI focuses strictly on text to speech. It includes a Story Maker and Emotion Text tools for expressive voice ai output. But there is no video creation, podcast hosting, or audio editing built in. TTS can convert articles into podcasts or generate audiobook narration when paired with external editors.
リスト番号: Listnr serves as a ‘one-stop-shop’ for podcasters, providing the tools to generate, host, and distribute entire podcast seasons. Listnr and Murf AI both provide options for users to integrate their voiceovers into multimedia projects. You get text-to-video, ai dubbing, and an embeddable audio player — all in one platform.
⚠️ 警告： If you only need voiceovers, Listnr’s extra tools may not be worth the higher monthly cost. But if you create podcasts, training videos, or video content, Listnr saves you from paying for multiple services.
8. Multilingual Support and Accents
TTSOpenAI: OpenAI TTS models, while optimized for English, support many other languages. TTSOpenAI allows you to generate speech in multiple languages and accents. The quality stays high across supported languages, even if the total language count is smaller than Listnr.
リスト番号: Listnr supports 142+ languages and accents — the widest coverage in this comparison. AI voice generation technology supports multilingual speech synthesis, allowing content to be localized for a global audience. Listnr is also used for localizing courses into multiple dialects and creating accessible materials for users with visual impairments or dyslexia.
9. 価格とコスト
Let’s compare different pricing plans side by side.
| プラン | TTSOpenAI | リスト番号 |
|---|---|---|
| 無料 | 2,000文字 | 月1,000語 |
| 入場料支払い済み | 20万クレジットで8ドル | 月額19ドル（個人向け） |
| 中級クラス | 使った分だけ支払う | 月額39ドル（一人暮らし向け） |
| 大量 | 使った分だけ支払う | 月額99ドル（代理店経由） |
TTSOpenAI: The pay-as-you-go model is much cheaper for occasional use. If you generate 10,000 characters, you pay about $0.40. No subscription lock-in. Great for freelancers and developers who only need TTS occasionally.
リスト番号: The $19/month Individual plan includes 20,000 words, 50 videos, and podcast hosting. If you use all the bundled features, it is good value. If you only need TTS, you pay for tools you may not use. Both Listnr and TTSOpenAI can generate audiobooks, but longer projects may incur higher costs.
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 | 使った分だけ支払う |
| Most natural sounding voices | TTSOpenAI | OpenAI音声エンジンの品質 |
| 142+ multiple languages | リスト番号 | 世界中で1,000人以上の声 |
| ポッドキャストホスティング | リスト番号 | 組み込みの配布ツール |
| 開発者API | TTSOpenAI | Clean REST api, fast setup |
| 動画のナレーション | リスト番号 | Text-to-video creation included |
💰 あなたの予算
予算を重視するユーザーにとって、TTSOpenAIは明らかに最良の選択肢です。月額料金はなく、クレジット単位で料金を支払います。Listnrは月額19ドルからで、たまにしか音声合成を利用しない場合は、費用がかさんでしまいます。
🔌 あなたの技術スタック
If you build apps or chatbots, TTSOpenAI’s REST api is easier to integrate. If you need CMS or podcast platform connections, Listnr’s webhooks and embeddable player are helpful.
📝 コンテンツの種類
For standalone professional voiceovers and audiobooks, TTSOpenAI delivers better voice quality per dollar. For multi-format content like podcasts, video, and dubbed audio, Listnr is the smarter pick.
🎓 あなたの経験レベル
Listnr generally has a more intuitive user interface for beginners. TTSOpenAI’s user friendly interface is simpler — paste just text, pick a voice, and download. Less to learn means faster results.
🆓 無料トライアルとデモ
Both TTSOpenAI and Listnr offer free trials. TTSOpenAI gives 2,000 free characters. Listnr gives 1,000 free words per month. Try both before committing.
🛟 サポートオプション
Listnr offers customer support, but response times can be slow. TTSOpenAI has documentation and a growing knowledge base. Neither service offers phone support.
切り替えガイド
既にこれらの音声生成ツールのいずれかをご利用ですか？もし切り替える場合は、以下の点にご注意ください。
🔄 TTSOpenAIからListnrに切り替えますか？
✅ 得られるもの：
- Access to 1,000+ different voices in 142+ multiple languages
- SpotifyとAppleの配信に対応したポッドキャストホスティング機能を内蔵
- Text-to-video and ai dubbing for marketing and training videos
❌ 失うもの：
- OpenAIのニューラルエンジンの優れた音声品質
- 月額契約不要の柔軟な従量課金制
- Near-instant audio generation speed and real-time streaming
📋切り替え方法：
- Download all your audio files from TTSOpenAI in mp3 audio format
- Listnrアカウントを作成して、無料プランから始めましょう。
- Listnrの音声ライブラリを使用して、キーコンテンツを再生成します。
🔄ListnrからTTSOpenAIに切り替えますか？
✅ 得られるもの：
- Higher voice quality and more natural sounding speech
- 月額料金なしの従量課金制
- Faster voice generation with real-time streaming support
❌ 失うもの：
- 1,000種類以上の音声と142種類以上の言語オプションを利用可能
- Podcast hosting and audio distribution features
- Text-to-video and ai dubbing capabilities
📋切り替え方法：
- Listnrからすべての音声ファイルとポッドキャストエピソードをエクスポートします
- TTSOpenAIの無料プランに登録しましょう。クレジットカードは不要です。
- Start creating with TTSOpenAI’s premium openai voices and buy credits as needed
What Our Review Didn’t Cover
This comparison focused on individual creators and small teams converting text into voiceovers and audio files. We did not test enterprise SSO, bulk licensing, or replacing entire voice acting teams with these speech software tools. We also did not measure how each platform handles converting written text into long-form audiobooks beyond 50,000 words. If you plan to convert an entire message or book into audio, voice generation time and pricing can shift. Our review also did not measure messaging-app integrations where message sound matters or every speed measures available in the developer SDKs. Use the free tiers to test your specific use case before releasing audio publicly.
最終評決
| カテゴリ | 勝者 |
|---|---|
| 💰価格 | TTSOpenAI |
| 🎯 音声品質 | TTSOpenAI |
| ⚡ スピード | TTSOpenAI |
| 🌍 言語の多様性 | リスト番号 |
| 🔌 APIと開発者ツール | TTSOpenAI |
| 📝 Content Creation Suite | リスト番号 |
| 👶 使いやすさ | TTSOpenAI |
| 🏆総合優勝 | TTSOpenAI |
🏆 受賞者：TTSOpenAI
TTSOpenAIは7部門中5部門で優勝した。
最適な用途: Developers building voice apps, creators who want the most natural ai voices, and budget-conscious users who prefer pay-as-you-go pricing.
TTSOpenAIとListnrは、全く異なるニーズに対応している。
TTSOpenAI is a focused voice generator built on OpenAI’s voice engine.
It delivers the most natural sounding speech at the lowest cost.
Listnrは、ポッドキャスターやビデオクリエイター向けの総合的なコンテンツ制作プラットフォームです。
If you need podcast hosting, ai dubbing, or 142+ multiple languages, Listnr is excellent.
しかし、音声品質と柔軟な料金体系を最も重視するのであれば、TTSOpenAIの方がより良い選択肢となるでしょう。
さあ、素晴らしいナレーションを作りましょう！
TTSOpenAIの比較
Here is how TTSOpenAI stacks up against other voice generators:
TTSOpenAI と Speechify
TTSOpenAIが勝利した点： Cost flexibility, developer api
Speechifyが勝利した点： 読書体験、ブラウザ拡張機能、モバイルアプリ
TTSOpenAI vs イレブンラボ
TTSOpenAIが勝利した点： キャラクターあたりのコストが低い、無料ティア
ElevenLabsが勝利した点： 1,200種類以上の音声、高度な音声クローン機能
TTSOpenAI vs Play.ht
TTSOpenAIが勝利した点： 音声の自然さ、リアルタイムストリーミング
Play.htが勝利した点： 142言語で907種類の音声、オーディオウィジェット
TTSOpenAI vs Lovo
TTSOpenAIが勝利した点： Pay-per-use pricing, api speed
Lovoが勝利した点： Voice variety, skin and アバター 特徴
TTSOpenAIが勝利した点： 無料プラン、キャラクターごとの料金
ウェルサイドラボ 勝利したタイトル： エンタープライズ機能、チームコラボレーション
TTSOpenAIが勝利した点： 価格設定、セットアップの容易さ
リードスピーカー 勝利したタイトル： Enterprise tts, accessibility compliance
TTSOpenAIが勝利した点： Voice naturalness, api integration
ナチュラルリーダー 勝利したタイトル： デスクトップアプリ、OCR文書読み取り
Listnrの比較をもっと見る
Here is how Listnr stacks up against other voice generators:
Listnr vs Murf
Listnrが勝利した点： 音声数（1,000以上）、ポッドキャストホスティング
マーフの勝利条件： ビデオエディターとの統合、エンタープライズ機能
Listnr 対 Speechify
Listnrが勝利した点： Content creation suite, ai dubbing feature
Speechifyが勝利した点： 読書体験、モバイルリスニングアプリ
Listnr と Descript
Listnrが勝利した点： 音声ライブラリの規模、ポッドキャスト配信
説明文が勝つ点： 音声・動画編集、画面録画
Listnr vs ElevenLabs
Listnrが勝利した点： ポッドキャストホスティング、テキスト動画化、低価格
ElevenLabsが勝利した点： 声質、高度なクローン技術、感情表現の幅
Listnr vs Play.ht
Listnrが勝利した点： All-in-one features, ai dubbing
Play.htが勝利した点： 音声品質の一貫性、埋め込みオプション
Listnr vs Podcastle
Listnrが勝利した点： 音声ライブラリ、テキストからビデオへの変換
Podcastleが勝利した点： ポッドキャスト編集、ノイズキャンセリング
Listnr vs Dupdub
Listnrが勝利した点： 音声カウント、ポッドキャスト配信
Dupdubが勝利した点： 動画吹き替え、アバター作成に注力
Listnr vs WellSaid Labs
Listnrが勝利した点： 価格設定、機能の多様性
WellSaid Labsが勝利した点： 企業品質、チームマネジメント
Listnr と Revoicer
Listnrが勝利した点： 言語数、コンテンツ作成ツール
Revoicerが以下の点で勝利： 感情制御、一括料金
ListnrとReadSpeakerの比較
Listnrが勝利した点： 価格、初心者向け
ReadSpeakerが優れている点： Enterprise tts, accessibility compliance
ListnrとNaturalReaderの比較
Listnrが勝利した点： 声のバリエーション、ポッドキャストのホスト
NaturalReaderが優れている点： デスクトップアプリ、スキャンした文書のOCR処理
Listnr vs Altered
Listnrが勝利した点： 価格設定、コンテンツ配信ツール
Alteredが勝利した試合： 音声モーフィング、プロ仕様の音声編集
Listnr 対 Speechelo
Listnrが勝利した点： 音声カウント、継続的なアップデート
Speecheloが勝利した点： 一度購入すれば、シンプルなインターフェースで利用できます。
Listnr vs TTS OpenAI
Listnrが勝利した点： Voice count, all-in-one creation suite
OpenAIの音声合成技術における勝利点： Voice quality, pay-per-use pricing
リスナー対ヒューム
Listnrが勝利した点： コンテンツ制作、声のバリエーション
ヒュームが勝利した理由： 感情AI、共感的な音声分析
よくある質問
ttsopenaiは無料で利用できますか？
Yes. TTSOpenAI offers a free tier with 2,000 characters and no credit card required. After that, you buy credits using a flexible pay-as-you-go model.
Listnrの料金はいくらですか？
Listnr starts at $19/month (Individual), $39/month (Solo), and $99/month (Agency). A free plan with 1,000 words per month is also available with no credit card needed.
最もリアルなAI音声生成器は何ですか？
TTSOpenAI delivers some of the most realistic ai voices in 2026, using deep-learning neural networks. ElevenLabs is another top contender for natural sounding speech.
無料のAI音声生成ツールはありますか？
Yes. Both TTSOpenAI and Listnr offer free trials. TTSOpenAI gives 2,000 free characters. Listnr gives 1,000 free words per month to test voice quality.
OpenAIにはテキスト読み上げ機能がありますか？
Yes. OpenAI offers text to speech via an api with tts-1, tts-1-hd, and gpt-4o-mini-tts models. TTSOpenAI provides a browser-based interface for this technology.
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