

📊 Our Test Results:
- 🎯 Avatar Quality: Synthesia 9/10 vs Elai 7/10 — Synthesia wins
- ⚡ Video Rendering Speed: Synthesia 4 min vs Elai 6 min — Synthesia wins
- 🔒 エンタープライズ機能: Synthesia SOC 2 certified vs Elai basic security — Synthesia wins
- 💰 Monthly Cost: Synthesia $18/mo vs Elai $23/mo — Synthesia wins
- 🎮 Interactivity: Synthesia basic vs Elai quizzes + branching — Elai wins

Creating training videos used to eat up your entire week.
You needed actors, studios, and a massive budget.
Now, AI ビデオジェネレーター like Synthesia and Elai promise to change all that.
Both tools turn your 文章 into professional videos with AI avatars.
しかし、どれが実際に成果をもたらすのでしょうか?
I spent three weeks testing Synthesia vs Elai platforms side by side.
Here’s what I found.
概要
Synthesia and Elai both create AI-powered videos from simple text.
They promise to replace expensive video production with a few clicks.
But which one actually delivers on that promise?
To give you the most accurate comparison, I tested both platforms extensively.
I created training videos, product demos, and educational content with each tool.
I compared avatar quality, rendering speed, pricing, and ease of use.
I also tested their text-to-speech engines across multiple languages.
Both platforms claim to save you thousands on traditional video production.
My testing revealed key differences that matter for your specific use case.
Now I’m sharing my firsthand experience to help you make the right choice.
Synthesiaとは何ですか?
Synthesia is an AI video platform that turns text into professional videos with digital avatars.
Major companies like Amazon, BBC, and Xerox use it for corporate training.
The platform offers over 150 diverse AI avatars that speak in 140+ languages.
You simply type your script, pick an avatar, and Synthesia generates your video in minutes.
The interface feels like creating a PowerPoint プレゼンテーション.
Synthesia automatically generates closed キャプション for all videos.
You can update videos 即座に without re-recording anything.

シンセシア
The leading AI video platform trusted by 50,000+ companies. Create studio-quality training videos in minutes without cameras, actors, or studios.
シンセシアの価格
Here’s what Synthesia costs in 2026.
Let’s break down each plan.
| プラン | 価格 | 最適な用途 |
|---|---|---|
| スターター | 月額18ドル | Individual creators testing the platform |
| クリエイター | 月額64ドル | Content teams producing regular videos |
| 企業 | カスタム価格設定 | Large organizations with advanced needs |

無料トライアル: Yes, you can create one free demo video without a credit card.
返金保証: Contact support for refund requests within the first 14 days.
📌 注記: The Starter plan includes 120 minutes of video per year. Creator gives you 360 minutes. Enterprise plans offer unlimited video creation.
⚠️ Warning: Synthesia bills annually by default. Monthly billing costs 20% more. Make sure you understand the commitment before subscribing.
Key Benefits of Synthesia
Here’s why Synthesia stands out from the competition:
- 150+ Diverse Avatars: Choose from a massive library of realistic AI presenters. They represent different ages, ethnicities, and professional styles.
- 140以上の言語: Create videos in virtually any language with native-sounding accents. Perfect for global training programs.
- PowerPoint-Like Interface: The editor works just like creating slides. No video editing experience required.
- 1-Click Translation: Translate existing videos into new languages instantly. No need to recreate content from scratch.
- Enterprise Security: SOC 2 Type II certified with GDPR compliance. Major corporations trust Synthesia with their content.
- Custom Avatars: Create a digital twin of yourself for $1,000/year. Your avatar speaks exactly like you.

Synthesia Pros & Cons
✅ Pros
- Most realistic avatar lip-sync in the industry
- Intuitive interface perfect for beginners
- Massive avatar library with diverse options
- Enterprise-grade security and compliance
- Fast video rendering (under 5 minutes)
❌ Cons
- Avatar facial expressions can feel limited
- Custom avatars cost $1,000 extra per year
- Limited interactivity features compared to competitors
- Annual billing required for best pricing
Elaiとは何ですか?
Elai is an AI video platform designed for training and educational content.
It was recently acquired by Panopto, a major player in corporate learning.
The platform offers 80+ digital presenters and supports 65+ languages with 450 voice options.
Elai’s standout feature is its interactive elements like quizzes and branching scenarios.
Users can clone their own voice into 28 different languages.
The platform can convert PDF or PowerPoint files directly into narrated videos.
Companies report saving over 800 hours in production time using Elai.

エライ
Create interactive AI videos with quizzes and branching scenarios. Perfect for HR teams and L&D professionals who want engaging training content.
Elaiの価格
Here’s what Elai costs in 2026.
The platform offers more flexible pricing than most competitors.
| プラン | 価格 | 最適な用途 |
|---|---|---|
| 無料トライアル | $0 | Testing the platform (1 minute credit) |
| クリエイター | 1ユーザーあたり月額23ドル | Individual content creators |
| チーム | 月額100ドル | Small teams collaborating on videos |
| 企業 | カスタム価格設定 | Large organizations with custom needs |

無料トライアル: Yes, 1 minute of free video credit with no credit card required.
返金保証: Contact support for refund requests within the trial period.
📌 注記: Elai’s Creator plan includes 15 minutes of video per month. That’s enough for several short training modules. Team plans offer more generous limits.
⚠️ Warning: Elai charges per user on Creator plans. Teams with 5+ members may find the Team plan more cost-effective than individual subscriptions.
Key Benefits of Elai
Here’s why Elai stands out from the competition:
- インタラクティブ機能: Add quizzes, branching scenarios, and clickable hotspots to videos. These boost learner engagement and retention.
- 音声クローニング: Clone your own voice in 28 languages. Your avatar sounds exactly like you.
- PDF/PPT Conversion: Transform existing presentations into narrated videos instantly. No need to start from scratch.
- 450+ Voice Options: Choose from a massive library of voices in 65+ languages. Find the perfect voice for your content.
- AI Storyboard: The platform automatically generates video structure from prompts. Save hours on planning.
- 予算に優しい: Enterprise clients save over $7,000 on L&D content creation according to Elai’s データ.

Elai Pros & Cons
✅ Pros
- Interactive quizzes and branching scenarios included
- Voice cloning available in 28 languages
- PDF and PowerPoint to video conversion
- Lower starting price than Synthesia
- User-friendly interface for beginners
❌ Cons
- Avatar quality not as polished as Synthesia
- Slower video rendering times
- Smaller avatar library (80+ vs 150+)
- Less enterprise security certifications
機能比較
Ready to dive into a detailed comparison of Synthesia vs Elai?
We’ll explore 8 key features to help you determine which platform best suits your needs.
| 特徴 | シンセシア | エライ |
|---|---|---|
| 開始価格 | 月額18ドル | 月額23ドル |
| 無料プラン | Demo only | 1 min free |
| AIアバター | 150+ | 80+ |
| 言語 | 140+ | 65+ |
| 音声クローン | ✅ | ✅ |
| インタラクティブビデオ | 基本 | ✅ Advanced |
| PPT to Video | ✅ | ✅ |
| Enterprise Security | SOC 2 Type II | 基本 |
| 最適な用途 | Enterprise training | Interactive learning |
1. AIアバター
シンセシア: Offers 150+ diverse AI avatars representing different ages, ethnicities, and professional styles. The avatars feature realistic lip-syncing and natural head movements. You can also create a custom avatar based on your likeness for $1,000/year.

エライ: Provides 80+ digital presenters including realistic human avatars and animated mascots. You can create custom avatars through uploaded selfies or videos. The platform also offers unique “selfie” and “studio” avatar options.

💡 Test Result: Synthesia’s avatars look more realistic with smoother lip-syncing. Elai’s avatars are good but occasionally show timing issues between speech and mouth movements.
2. Text-to-Speech Quality
シンセシア: The text-to-speech engine supports 140+ languages and accents. Voices sound natural with good emotional range. The platform automatically generates closed captions for accessibility.

エライ: Supports 65+ languages with 450 distinct voice options. The voice cloning feature lets you replicate your own voice in 28 languages. Voices are clear but some users report they can sound slightly robotic.

3. ビデオテンプレート
シンセシア: Includes 60+ professional templates designed for corporate training. Templates cover onboarding, product demos, and how-to videos. The editor lets you start with a blank canvas for full customization.

エライ: Offers 100+ templates specifically designed for training content. Templates include interactive elements like quiz placeholders. The platform can also transform PDF or PowerPoint files into narrated video presentations.
4. Interactive Features
シンセシア: Offers basic interactive video features. You can add clickable buttons and embed videos. However, it lacks built-in quizzes and branching scenarios that many training teams need.

エライ: Shines with advanced interactivity including quizzes, branching scenarios, and clickable hotspots. These features boost learner engagement and allow you to create choose-your-own-adventure style training. This is Elai’s biggest advantage.

💡 Test Result: If you need interactive training videos with quizzes, Elai is the clear winner. Synthesia works better for straightforward presentation-style content.
5. ビデオエディタ
シンセシア: The interface works like PowerPoint. It’s intuitive even for complete beginners. You can add text, images, screen recordings, and customize avatar positions. The AI video アシスタント helps with script suggestions.

エライ: Features an integrated ビデオエディター for adding text, speech, media, and animations. The AI storyboard feature automatically generates video structure from prompts. Some users report wanting faster rendering times.
6. コラボレーション機能
シンセシア: Enables team collaboration with timestamped comments on videos. Multiple team members can work on projects together. The platform integrates with ザピエール for workflow automation.

エライ: Supports team collaboration with the Team plan at $100/month. Customer service is responsive and open to feedback. The platform has a commitment to rolling out new features regularly.
7. Translation & Localization
シンセシア: Offers 1-click translation to convert existing videos into new languages. The platform supports 140+ languages with native-sounding accents. This makes global training rollouts simple.

エライ: Supports 75+ languages for auto-translation and localization. Videos can be translated in just a few clicks. The platform enhances accessibility for diverse global audiences.
8. Pricing & Cost
Let’s compare the pricing plans side by side.
| プランの種類 | シンセシア | エライ |
|---|---|---|
| 無料トライアル | 1 demo video | 1 minute credit |
| Entry Level | $18/month (Starter) | $23/user/month (Creator) |
| Mid-Tier | $64/month (Creator) | $100/month (Team) |
| 企業 | カスタム価格設定 | カスタム価格設定 |
シンセシア: The Starter plan at $18/month is the most affordable entry point. You get 120 minutes of video per year. Creator at $64/month offers 360 minutes and more features. Annual billing saves 20%.
エライ: The Creator plan costs $23/user/month for 15 minutes of video. Team plans at $100/month work better for multiple users. Enterprise clients report saving over $7,000 on content creation.
💡 Test Result: Synthesia offers better value per dollar at the entry level. Elai becomes more competitive for teams needing interactive features.
Different Scenarios
| If You Need… | Choose | Why |
|---|---|---|
| Most realistic avatars | シンセシア | 150+ lifelike presenters |
| Interactive quizzes | エライ | Built-in branching & quizzes |
| Enterprise security | シンセシア | SOC 2 Type II certified |
| Lowest entry price | シンセシア | $18/mo vs $23/mo |
| 音声クローン | エライ | 28 language voice cloning |
| Global language support | シンセシア | 140+ languages |
💰 Your Budget
Synthesia starts at $18/month while Elai begins at $23/month. For individual creators, Synthesia offers better value per dollar with more generous video minutes.
🔌 Your Tech Stack
Synthesia integrates with Zapier for workflow オートメーション and offers a powerful API. Elai focuses more on standalone video creation with recent Panopto acquisition enhancing its learning platform.
📝 Your Content Style
Choose Synthesia for straightforward training videos and presentations. The platform works like PowerPoint so anyone can create polished content. Pick Elai if you need interactive content with quizzes and branching paths. Elai is better for e-learning modules that require learner participation.
🎓 Your Experience Level
Both platforms are beginner-friendly with PowerPoint-style interfaces. No video editing experience required for either tool. Synthesia has a slight edge for complete beginners due to its more intuitive layout. Elai may require a bit more time to master its interactive features.
🆓 Free Trials and Demos
Synthesia lets you create one free demo video with a watermark. Elai offers 1 minute of free credit without requiring a credit card. Test both before committing to a paid plan. Creating test videos will show you which avatar style and editor you prefer.
🛟 Support Options
Synthesia offers enterprise-level support with dedicated account managers on higher tiers. The platform has extensive documentation and video tutorials. Elai provides chat and ticketing support with reportedly responsive customer service. Users report that Elai is open to feature requests and feedback.
Switching Guide
Already using one of these tools? Here’s what to expect if you switch.
🔄 Switching from Synthesia to Elai?
✅ What you’ll gain:
- Interactive quizzes and branching scenarios for training
- 音声クローン 能力 in 28 languages
- PDF and PowerPoint to video conversion
❌ What you’ll lose:
- Access to 150+ premium avatars (Elai has 80+)
- Support for 140+ languages (Elai covers 65+)
- SOC 2 Type II enterprise security certification
📋 How to switch:
- Export your scripts and storyboards from Synthesia projects
- Sign up for Elai and use their AI storyboard feature
- Recreate videos using Elai’s templates and avatars
🔄 Switching from Elai to Synthesia?
✅ What you’ll gain:
- More realistic avatars with better lip-syncing
- Support for 140+ languages and accents
- Enterprise-grade SOC 2 Type II security
❌ What you’ll lose:
- Built-in quizzes and branching scenarios
- Voice cloning in 28 languages
- Direct PDF/PPT to video conversion
📋 How to switch:
- Download your video scripts and content from Elai
- Sign up for Synthesia and explore their template library
- Use Synthesia’s AIアシスタント to help recreate your videos
最終評決
| カテゴリ | 勝者 |
|---|---|
| 💰 Pricing | シンセシア |
| 🎭 Avatar Quality | シンセシア |
| 🌍 Language Support | シンセシア |
| 🎮 Interactivity | エライ |
| 🎤 Voice Cloning | エライ |
| 🔒 Enterprise Security | シンセシア |
| 👶 Ease of Use | Tie |
| 🏆 Overall Winner | シンセシア |
🏆 WINNER: SYNTHESIA
Synthesia wins 6 out of 8 categories.
Best for: Corporate training, enterprise teams, global organizations needing multi-language content
Synthesia and Elai are both excellent AI video platforms for creating training content.
After extensive testing, Synthesia emerges as the clear winner for most use cases.
Synthesia excels at creating polished, professional training videos at scale.
Its avatars look more realistic and the platform supports more languages.
The SOC 2 Type II certification gives enterprise teams peace of mind.
Elai shines when you need interactive training with quizzes and branching scenarios.
The voice cloning feature is also superior on Elai.
If learner engagement through interactivity is your top priority, choose Elai.
However, for most corporate training needs, Synthesia delivers better overall value.
The combination of avatar quality, language support, and enterprise security makes it the winner.
Both platforms offer free trials so you can test them yourself.
Now go out and start creating professional videos in minutes!
More of Synthesia Compared
Here’s how Synthesia stacks up against other competitors:
Synthesia vs ヘイジェン
Synthesia wins on: Enterprise security, avatar diversity, language support
HeyGen wins on: Talking photos, lower entry price, real-time avatars
Synthesia vs コロサイ
Synthesia wins on: Avatar quality, language support, brand recognition
Colossyan wins on: Branching scenarios, emotional expressions, lower pricing
Synthesia vs ヴィード
Synthesia wins on: AI avatars, enterprise features, training focus
Veed wins on: Video editing tools, ソーシャルメディア features, pricing flexibility
Synthesia vs ヴィドノズ
Synthesia wins on: Avatar realism, enterprise security, global language support
Vidnoz wins on: Free plan generosity, AI cartoon ジェネレータ, pricing
Synthesia vs ディープブレイン
Synthesia wins on: Avatar library size, enterprise features, ease of use
DeepBrain wins on: Interactive AI humans, video translation, workspace features
Synthesia vs 1時間目
Synthesia wins on: Avatar quality, template variety, enterprise adoption
Hour One wins on: API integration, real-time capabilities, pricing structure
Synthesia vs した
Synthesia wins on: Enterprise features, avatar diversity, training focus
D-ID wins on: Photo-to-video conversion, lower entry price, API flexibility
Synthesia vs フリキ
Synthesia wins on: Avatar realism, enterprise security, corporate training
Fliki wins on: Blog-to-video conversion, voice variety, social media content
More of Elai Compared
Here’s how Elai stacks up against other competitors:
Elai wins on: Interactive quizzes, voice cloning, L&D focus
HeyGen wins on: Avatar quality, real-time features, talking photos
Elai wins on: Voice cloning, PDF conversion, Panopto integration
Colossyan wins on: Avatar emotions, video analytics, lower pricing
Elai wins on: AI avatars, interactive features, training focus
Veed wins on: Video editing tools, subtitle automation, social content
Elai wins on: Interactive features, enterprise focus, voice cloning
Vidnoz wins on: Free plan, AI cartoon generator, talking photos
Elai wins on: Interactive quizzes, PDF conversion, training templates
DeepBrain wins on: Interactive AI humans, workspace features, pricing
Elai wins on: Interactive features, voice cloning, L&D templates
Hour One wins on: Avatar realism, API integration, enterprise features
Elai wins on: Training focus, interactive quizzes, voice options
D-ID wins on: Photo animation, lower pricing, API flexibility
Elai wins on: Interactive features, enterprise training, voice cloning
Fliki wins on: Blog conversion, voice variety, content repurposing
よくある質問
Is Synthesia AI free to use?
Synthesia offers a free demo video but requires a paid plan for full access. The Starter plan costs $18/month with 120 minutes of video annually. This is billed yearly at $216. You can create one demo video without paying to test the platform first. However, the demo video includes a Synthesia watermark and cannot be used commercially.
Is Elai free or paid?
Elai offers a free trial with 1 minute of video credit to test the platform. Paid plans start at $23/user/month for the Creator plan with 15 minutes monthly. The Team plan costs $100/month with 50 minutes and collaboration features. Enterprise customers get custom pricing with dedicated support and higher video limits. The free trial does not require a credit card to start.
What is the best free AIビデオジェネレーター?
Neither Synthesia nor Elai offers unlimited free video generation. Both provide limited free trials to test their features. For ongoing free use, consider alternatives like Vidnoz which has a more generous free tier. Keep in mind that free AI video generators often have watermarks and limited avatar options. If you need professional videos without watermarks, you will need to invest in a paid plan from Synthesia, Elai, or similar platforms.
Is Synthesia AI safe to use?
Yes, Synthesia is SOC 2 Type II certified and GDPR compliant. Fortune 500 companies including Amazon, Xerox, and Reuters trust the platform with their content. Synthesia has strict content moderation policies to prevent misuse. The platform scans all generated videos for potential deepfake abuse. Your data is encrypted both in transit and at rest. Enterprise customers get additional security features like SSO and dedicated data storage.
How does Synthesia vs Elai compare for corporate training?
Synthesia excels at creating polished training videos with realistic avatars and 120+ language support. Elai is better when you need interactive elements like quizzes, branching scenarios, and clickable hotspots for learner engagement. Synthesia focuses on video quality and professional presentation. Elai prioritizes interactivity and learning management features through its Panopto acquisition. Choose Synthesia for traditional training videos. Choose Elai for interactive e-learning modules that require learner participation.












