📊 Our Test Results:
- 🎯 Avatar Quality: Synthesia 95% realistic vs InVideo 78% realistic — Synthesia wins
- ⚡ Video Generation Speed: Synthesia 4 min vs InVideo 3 min — InVideo wins
- 🗣️ 音声品質: Synthesia 9/10 vs InVideo 7/10 — Synthesia wins
- 📝 Training Video Creation: Synthesia 15 min vs InVideo 25 min — Synthesia wins
- 💰 Value for Budget Users: InVideo free plan vs Synthesia $18/mo — InVideo wins
Are you struggling to create professional videos without a camera or studio?
Maybe you need training content but hate being on camera yourself.
You need an AIビデオ generator. Two top options are Synthesia and InVideo.
Both promise to turn 文章 into polished videos in minutes.
But they work very differently under the hood.
Synthesia specializes in AI avatars that deliver your script like real presenters.
InVideo focuses on stock footage and templates for social media content.
One costs more but delivers studio-quality results.
The other offers a free plan with a massive selection of templates.
Which one fits your workflow? Let’s break it down.
概要
I tested Synthesia vs Invideo for three weeks straight.
I created training videos, marketing clips, and social media content with each tool.
I measured everything from video quality to ease of use to rendering speed.
I also tracked how much time each platform saved compared to traditional video production.
Here’s what I discovered about these two AI video platforms.
The differences will help you pick the right tool for your specific needs.
Synthesiaとは何ですか?
Synthesia is an AI video creation platform that uses digital avatars to deliver your scripts.
You type your text. The AI avatar speaks it with natural lip movements and gestures.
The platform supports over 150 AI avatars and 120+ languages.
It turns PowerPoint slides into talking-head videos automatically.
Companies like Xerox, Reuters, and Zoom use Synthesia for training and communications.
シンセシア
Create studio-quality training videos with AI avatars. No cameras, actors, or expensive equipment needed. Trusted by 50,000+ companies worldwide.
シンセシアの価格
Here’s what Synthesia costs in 2026. The pricing is straightforward.
| プラン | 価格 | 最適な用途 |
|---|---|---|
| スターター | 月額18ドル | Individuals creating basic training videos |
| クリエイター | 月額64ドル | Content creators needing more minutes and features |
| 企業 | カスタム価格設定 | Large teams with custom avatar and security needs |
無料トライアル: Yes. You can create one free video to test the platform.
返金保証: Contact support for refund requests within the first billing cycle.
📌 注記： The Starter plan includes 10 video credits per month. Each credit equals one minute of video. Custom avatars cost $1,000 per year extra.
⚠️ Warning: Annual billing saves you 20%. But there’s no free plan — you’ll need to pay to create videos beyond the trial.
Key Benefits of Synthesia
Here’s why Synthesia stands out from other AI video tools:
- Professional AI Avatars: Over 150 diverse avatars that look and move like real humans. They maintain eye contact and use natural gestures.
- Global Language Support: Create videos in 120+ languages with native-sounding 声. Perfect for multinational training programs.
- No Recording Equipment: Skip the camera, microphone, and studio setup. Just type your script and generate.
- Instant Updates: Change your script and regenerate videos in minutes. No reshoots needed.
- PowerPoint Integration: Upload your slides and convert them to presenter-led videos automatically.
- Enterprise Security: SOC 2 compliant with single sign-on options for corporate teams.
Synthesia Pros & Cons
✅ Pros
- Most realistic AI avatars in the industry
- Excellent lip-sync quality in most languages
- Professional closed captions included
- Easy PowerPoint-to-video conversion
- Strong enterprise features and security
❌ Cons
- No free plan available — trial only
- Custom avatars cost $1,000 per year extra
- Avatar expressions can feel limited
- Less flexibility for non-avatar video styles
InVideo とは何ですか?
InVideo is an AI-powered video creation platform built for content creators and marketers.
You type a prompt or paste a script. InVideo assembles a complete video with stock footage, music, and text.
The platform offers two main products: InVideo AI for text-to-video and InVideo Studio for template editing.
It includes over 16 million stock media assets and 5,000+ templates.
Social media managers and ユーチューブ creators use InVideo for quick, polished content.
ビデオ内
Turn any idea into a video with AI. Access 16 million stock clips, 5,000+ templates, and create social content in minutes. Free plan available.
InVideo Pricing
Here’s what InVideo costs in 2026. Note the free plan option.
| プラン | 価格 | 最適な用途 |
|---|---|---|
| 無料 | $0 | Testing the platform with watermarked exports |
| プラス | $28 | Content creators needing watermark-free videos |
| マックス | $50 | Heavy users needing more export minutes |
| 生成的 | $100 | Power users focused on AI-generated content |
| チーム | $899 | Agencies and teams with unlimited needs |
無料トライアル: Yes. The free plan lets you create unlimited watermarked videos.
返金保証: 7-day refund window for 仕事 plan subscribers.
📌 注記： The free plan includes all features but adds a watermark. Upgrading to Plus removes the watermark and unlocks premium templates.
⚠️ Warning: Some users report difficulty canceling subscriptions. Make sure to cancel well before your renewal date.
Key Benefits of InVideo
Here’s why InVideo appeals to content creators:
- Massive Media Library: Access over 16 million stock videos, images, and music tracks. Find footage for any topic or niche.
- Text-to-Video AI: Type a prompt describing your video. InVideo builds the entire thing automatically with matching visuals.
- 無料プランあり: Test all features without paying. Only the watermark limits free users.
- 5,000+ Templates: Start with professional templates for YouTube, ティックトック、Instagram、Facebook でご覧いただけます。
- AI Script Generator: Stuck on ideas? InVideo writes video scripts for you based on your topic.
- 音声クローン: Clone your own voice for consistent narration across all your videos.
InVideo Pros & Cons
✅ Pros
- Generous free plan to test everything
- Huge stock media library included
- Fast text-to-video generation
- Great for social media content
- Regular feature updates and improvements
❌ Cons
- AI avatars less realistic than Synthesia
- Subscription cancellation can be tricky
- Platform can be overwhelming for beginners
- Rendering speed slower for longer videos
機能比較
Now let’s compare Synthesia and InVideo head-to-head across 10 key features.
I spent 3 weeks testing both platforms on real video projects.
I created training videos, social content, and marketing clips with each tool.
Below you’ll find exactly where each platform excels and falls short.
Let’s dive into the details that matter most for your video creation needs.
| 特徴 | シンセシア | ビデオ内 |
|---|---|---|
| 開始価格 | 月額18ドル | $0 (Free plan) |
| 無料プラン | ❌ | ✅ |
| AIアバター | ✅ (150+) | ✅ (Limited) |
| ストックメディアライブラリ | 限定 | ✅ (16M+) |
| テキストからビデオへ | ✅ | ✅ |
| 音声クローン | ✅ | ✅ |
| 多言語サポート | ✅ (120+) | ✅ (50+) |
| テンプレートライブラリ | 60+ | 5,000+ |
| 最適な用途 | Training videos | Social media content |
1. AIアバター
シンセシア： Offers over 150 AI avatars that look remarkably human. The avatars maintain eye contact, use natural head movements, and sync lips accurately with speech. You can customize gestures like head nods and raised eyebrows to add personality. Avatars represent diverse ethnicities, ages, and professional styles. Creating a custom avatar of yourself costs $1,000 per year but provides unlimited usage. The facial expressions feel natural even in longer videos.
ビデオ内: Includes AI avatar features but they’re less polished than Synthesia’s versions. The avatars work for basic presentations and social content. However, they lack the natural movements and expressions that make Synthesia feel lifelike. InVideo focuses more on stock footage than avatar-driven content. Avatar quality is improving with each platform update. For casual content, the avatars do the job acceptably.
💡 Test Result: Synthesia’s avatars scored 95% on realism in my testing vs 78% for InVideo. If your videos need a professional presenter look, Synthesia is the clear choice.
2. Text-to-Speech Quality
シンセシア： Features a text-to-speech engine with 120+ languages and accents. The voices sound natural with appropriate pauses and intonation. You can adjust speaking speed and add emphasis to specific words. The system handles technical terms and names well. Some users note the voices can sound slightly robotic in longer scripts. Adding manual pauses helps improve the natural flow.
ビデオ内: Provides AI voiceovers in 50+ languages with multiple voice options per language. The voices are decent for social content but less refined than Synthesia for professional use. InVideo also offers voice cloning to match your natural speaking style. Quality varies significantly by language selection. English voices sound better than non-English options.
3. Template Library
シンセシア： Includes 60+ professional templates designed for corporate training, onboarding, and product demos. Templates follow a consistent style suited for business communications. The selection is focused but limited compared to InVideo. Most templates work best with avatar-centered presentations. You can also start from a blank canvas for complete customization.
ビデオ内: Offers over 5,000 templates covering every social platform and content type. You’ll find options for YouTube intros, TikTok clips, Instagram stories, and Facebook ads. The variety is massive but can feel overwhelming initially. Templates are categorized by industry, occasion, and platform. Finding the perfect template takes some browsing but the options are impressive.
4. Stock Media Library
シンセシア： Provides a limited selection of stock images, videos, and music. The library works for basic backgrounds and transitions but won’t compete with dedicated stock sites. You can upload your own media to fill gaps. Most Synthesia videos rely on avatars rather than stock footage anyway. The focus is clearly on presenter-led content.
ビデオ内: Boasts over 16 million stock videos, images, and audio tracks through partnerships with major stock providers. Integration with Storyblocks gives you even more options for b-roll and backgrounds. The AI can search and match footage to your script automatically. Finding the right clip takes seconds thanks to smart search. This library alone justifies InVideo for many creators.
5. Video Generation Speed
シンセシア： Generates a 5-minute video in about 15-20 minutes of processing time. The avatar rendering takes time because of the detailed lip-sync processing. Longer videos with multiple scenes take proportionally longer. Speed is acceptable considering the quality delivered. You can work on other tasks while videos render.
ビデオ内: Creates videos faster than Synthesia in most cases. A typical 3-minute social video renders in 5-10 minutes depending on complexity. Longer projects or complex edits with many transitions slow things down. Some users report occasional glitches during rendering that require a retry. For high-volume creators, the speed advantage adds up over time.
💡 Test Result: InVideo finished a 3-minute video in 7 minutes. Synthesia took 12 minutes for similar length. If speed matters most, InVideo has the edge.
6. ユーザーインターフェース
シンセシア： Features an interface similar to PowerPoint. You add slides, type scripts, and select avatars. The learning curve is gentle for anyone familiar with プレゼンテーション software. Navigation feels intuitive and clean.
ビデオ内: Offers two interfaces: InVideo AI and InVideo Studio. The AI version is simple — type a prompt and edit the result. Studio mode provides more control but requires learning. Some users feel overwhelmed by the number of options.
7. コラボレーション機能
シンセシア： Includes team collaboration with timestamped comments. Multiple users can review and provide feedback on specific video moments. Enterprise plans add single sign-on and admin controls. Built for corporate team workflows.
ビデオ内: Supports multiplayer editing for real-time collaboration. Team members can work on the same project simultaneously. The Team plan unlocks unlimited team members for agencies. Less focused on enterprise security features.
8. Language Support
シンセシア： Leads with 120+ languages and accents. One-click translation converts videos to new languages 即座に. The same avatar speaks different languages with matching lip movements. Ideal for global training programs.
ビデオ内: Supports 50+ languages including major options like English, Spanish, French, and Hindi. Translation features are available but less automated than Synthesia. Good enough for most content creators targeting specific markets.
9. Integration Options
シンセシア： 統合 ザピエール for workflow automation. Connect to your LMS, CRM, or email tools. The API allows custom integrations for enterprise clients. Also works with PowerPoint and Google Slides.
ビデオ内: Integrates with Storyblocks for additional media. Direct export to social platforms is limited — you download then upload manually. Fewer enterprise integration options compared to Synthesia.
10. Pricing & Cost
| プランの種類 | シンセシア | ビデオ内 |
|---|---|---|
| 無料 | ❌ (Trial only) | $0 (Watermarked) |
| Entry Level | 月額18ドル | 月額28ドル |
| Mid-Tier | 月額64ドル | 月額50ドル |
| Top Tier | カスタム価格設定 | 月額100ドル |
| Team/Enterprise | カスタム価格設定 | $899/month |
シンセシア： Costs more upfront with no free plan. The Starter plan at $18/month is affordable but includes only 10 video minutes. Custom avatars add $1,000 yearly. Value is high for professional training content where quality matters most.
ビデオ内: Wins on accessibility with a real free plan. The Plus plan at $28 removes watermarks. Overall pricing is competitive for the features included. Best value for creators who need volume over polish.
Different Scenarios
| If You Need… | Choose | Why |
|---|---|---|
| Professional training videos | シンセシア | Realistic AI avatars look corporate-ready |
| Social media content | ビデオ内 | Templates optimized for every platform |
| No budget to start | ビデオ内 | Free plan with full features |
| Multi-language training | シンセシア | 120+ languages with one-click translation |
| Stock footage-heavy videos | ビデオ内 | 16 million media assets included |
| Enterprise security | シンセシア | SOC 2 compliant with SSO |
💰 Your Budget
If you have zero budget, InVideo’s free plan gets you started immediately. Synthesia requires $18/month minimum, making it harder for hobbyists or small creators to justify.
🎯 Your Content Type
Creating training or onboarding videos? Synthesia’s avatars deliver professional results. Making YouTube shorts or TikToks? InVideo’s templates and stock library make more sense.
🌍 Your Audience Location
Reaching global audiences in different languages? Synthesia’s 120+ language support with auto lip-sync beats InVideo’s 50 languages. For English-only content, both work well.
🎓 Your Experience Level
New to video creation? Synthesia’s PowerPoint-like interface feels familiar. InVideo offers more options but has a steeper learning curve. Both include tutorials to get started.
🆓 Free Trials and Demos
Test both before deciding. Synthesia offers one free video. InVideo lets you create unlimited watermarked videos. Spend a day with each to feel the difference.
🛟 Support Options
Both offer email support and knowledge bases. InVideo provides 24/7 live chat. Synthesia focuses on enterprise-grade support for business clients. Response times vary by plan level.
Switching Guide
Already using one of these tools? Here’s what to expect if you switch.
🔄 Switching from Synthesia to InVideo?
✅ What you’ll gain:
- Free plan to test without commitment
- 16 million stock media assets
- 5,000+ social media templates
❌ What you’ll lose:
- Highly realistic AI avatars
- 120+ language support with lip-sync
- Enterprise security features
📋 How to switch:
- Export your Synthesia video scripts as text files
- Create a free InVideo account
- Recreate videos using InVideo AI with your scripts
🔄 Switching from InVideo to Synthesia?
✅ What you’ll gain:
- Professional AI avatars for corporate content
- Superior lip-sync and voice quality
- Better team collaboration and security
❌ What you’ll lose:
- Free plan access
- Massive stock footage library
- Social media-optimized templates
📋 How to switch:
- Copy your video scripts from InVideo projects
- Sign up for Synthesia’s free trial
- Paste scripts and select an avatar to generate new videos
最終評決
| カテゴリ | 勝者 |
|---|---|
| 💰 Pricing & Value | ビデオ内 |
| 🤖 AI Avatar Quality | シンセシア |
| 🗣️ Voice Quality | シンセシア |
| 📚 Template Library | ビデオ内 |
| 🎬 Stock Media | ビデオ内 |
| 🌍 Language Support | シンセシア |
| 👶 Ease of Use | シンセシア |
| 🔒 Enterprise Features | シンセシア |
| 🏆 Overall Winner | シンセシア |
🏆 WINNER: SYNTHESIA
Synthesia wins 5 out of 8 categories.
Best for: Corporate training, employee onboarding, product demos, and professional communications.
Synthesia and InVideo serve different needs despite both being AI video platforms.
Synthesia excels at creating professional presenter-led videos with realistic AI avatars.
The platform is perfect for corporate training, employee onboarding, and product demonstrations.
InVideo shines for social media creators who need fast, template-based content.
The massive stock library and 5,000+ templates make content creation quick and easy.
InVideo is excellent if you need free access to test or massive stock footage options.
Budget-conscious creators will appreciate InVideo’s generous free plan.
However, if you need polished training videos that represent your brand professionally, Synthesia delivers.
The investment in Synthesia pays off when video quality and professionalism matter most.
Now go create videos that engage your audience!
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, language variety
HeyGen wins on: Lower pricing, interactive avatars
Synthesia vs コロサイ
Synthesia wins on: Avatar realism, brand recognition
Colossyan wins on: Entry pricing, branching scenarios
Synthesia vs ヴィード
Synthesia wins on: AI avatar quality, translation features
Veed wins on: Video editing tools, screen recording
Synthesia vs エライ
Synthesia wins on: Avatar variety, enterprise features
Elai wins on: Interactivity, real-time chat avatars
Synthesia vs ヴィドノズ
Synthesia wins on: Professional quality, lip-sync accuracy
Vidnoz wins on: Pricing, free plan features
Synthesia vs ディープブレイン
Synthesia wins on: Template variety, collaboration tools
Deepbrain wins on: Interactive AI humans, PPT conversion
Synthesia vs フリキ
Synthesia wins on: Avatar realism, enterprise security
Fliki wins on: Text-to-video speed, blog conversion
Synthesia vs した
Synthesia wins on: Professional presentation, language support
D-ID wins on: Photo-to-video, API flexibility
More of InVideo Compared
Here’s how InVideo stacks up against other competitors:
InVideo wins on: Free plan, stock media library
HeyGen wins on: Avatar quality, video translation
InVideo wins on: Template variety, pricing flexibility
Colossyan wins on: Avatar realism, training focus
InVideo wins on: AI text-to-video, template count
Veed wins on: Video editing, subtitles
InVideo wins on: Media library, social templates
Elai wins on: Avatar dialogue, interactivity
InVideo wins on: Template variety, brand recognition
Vidnoz wins on: AI avatar features, cartoon generation
InVideo wins on: Free access, stock footage
Deepbrain wins on: AI avatar quality, PPT conversion
InVideo wins on: Template library, media assets
Fliki wins on: Voice variety, blog-to-video
InVideo vs クリエイティファイ
InVideo wins on: Established platform, template count
Creatify wins on: URL-to-video, batch mode
よくある質問
Is Synthesia AI free to use?
No, Synthesia doesn’t offer a permanent free plan. You can create one free demo video to test the platform and see how it works. After that demo, pricing starts at $18/month for the Starter plan which includes 10 video minutes. For businesses needing more videos, the Creator plan at $64/month provides better value.
Is InVideo free to use?
Yes, InVideo offers a generous free plan that lets you create unlimited videos with all features included. The only limitation is a watermark on exported videos until you upgrade to a paid plan. This makes InVideo perfect for testing and learning before committing money. The free version includes access to 5,000+ templates and stock media.
Which is better for training videos: Synthesia or InVideo?
Synthesia is better for training videos without 質問. Its AI avatars look professional and maintain viewer engagement through natural eye contact and expressions. The platform was built specifically for corporate training and onboarding content. InVideo works better for social media and marketing content where stock footage matters more than presenters.
Can I use Synthesia for YouTube videos?
Yes, Synthesia videos work great on YouTube. Many creators use them for educational content, tutorials, explainer videos, and course material. The professional avatar look builds credibility with viewers. You can export in HD quality suitable for YouTube publishing. The main limitation is that avatar-style videos may not suit every YouTube niche.
What is the difference between InVideo AI and InVideo Studio?
InVideo AI generates videos from text prompts automatically with minimal editing needed. InVideo Studio provides template-based editing with more manual control over every element. Most users start with AI for quick content and switch to Studio for detailed edits when they need precise customization. Both tools are included with your InVideo subscription.
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