Text-based video and podcast editor with AI co-editor Underlord, Studio Sound, filler-word removal and clips.
Captions vs Synthesia
Features, pricing, strengths and trade-offs — and which one fits your situation.
The verdict
Summary
Captions is best for mobile-first talking-head videos with AI captions, edits and AI twins, while Synthesia is best for corporate training and internal comms videos with AI presenters. Only Captions offers long-to-short clipping. Both Captions and Synthesia offer a free plan, so you can try each before paying.
Which should you choose?
Choose Captions if…
- You need mobile-first talking-head videos with AI captions, edits and AI twins
- Long-to-short clipping matters to you
- You're one of: solo creators filming on phones, coaches and personal brands, ugc-style ad makers
- Very fast phone-based workflow for creators
Choose Synthesia if…
- You need corporate training and internal comms videos with AI presenters
- You're one of: l&d teams, hr and internal comms, enterprise localization teams
- Mature enterprise security and compliance certifications
At a glance
| Captions | Synthesia | |
|---|---|---|
| Best for | Mobile-first talking-head videos with AI captions, edits and AI twins | Corporate training and internal comms videos with AI presenters |
| Free plan | Yes | Yes |
| Starting price | From $9.99 | From $29/mo |
| Learning curve | Low | Low |
| Platforms | Web, Windows, macOS, iOS, Android | Web, API |
| Ideal for | Solo creators filming on phones, Coaches and personal brands, UGC-style ad makers | L&D teams, HR and internal comms, Enterprise localization teams, Customer education |
Feature comparison
| Captions | Synthesia | |
|---|---|---|
| AI avatars / presenters | Yes | Yes |
| Generative text-to-video | Limited | Script-to-avatar video, not generative |
| Long-to-short clipping | Yes | No |
| Auto captions | Yes | Yes |
| Edit video by editing text | — | No |
| AI voiceover | Yes | Yes |
| Translation / dubbing | Yes | Yes |
| Max export resolution | — | 1080p |
| Stock media library | — | Yes |
IncludedLimited / higher plansNot available— Not confirmed
Security & enterprise
| Captions | Synthesia | |
|---|---|---|
| Business / enterprise plan | Yes | Yes |
| SSO (SAML / OIDC) | — | Enterprise plan |
| SCIM user provisioning | — | Enterprise plan |
| SOC 2 | — | Type II |
| ISO 27001 | — | Yes |
| HIPAA (BAA available) | — | — |
| GDPR DPA | — | Yes |
| Data residency options | — | EU |
| No training on your data | Enterprise plan | — |
| Audit logs | — | — |
| Admin controls | — | Yes |
| Deployment | Cloud | Cloud |
From each vendor's security documentation. "—" = not confirmed. What to ask vendors · Compare all tools
What each tool does
Captions
Captions is an AI video app from Mirage (the company renamed itself in 2025) for creating and editing talking-head and short-form videos. It auto-captions, trims and styles footage, and can generate videos with AI avatars or a digital twin of the user. It runs on iOS, Android, web and desktop.
Key features- Animated auto captions with 100+ templates
- AI Edit that assembles cuts, captions and motion automatically
- AI twins and AI actors for generated presenters
- AI Translate and lipdub across 100+ languages
- Long video to short clips
- Built-in teleprompter and script writer
Synthesia
Synthesia is an AI video platform where users type a script, choose a stock or personal avatar and generate a presenter-led video in 160+ languages. It adds screen recording, templates, one-click translation, AI dubbing and, on higher plans, interactivity and SCORM export. Large enterprises use it mainly for training, onboarding and internal communications.
Key features- 240+ stock AI avatars and personal avatars
- Express-2 avatars with gestures and lip sync
- 160+ languages with one-click translation
- AI dubbing of existing videos
- Voice cloning
- Interactive videos, video agents and SCORM export
Pricing
Captions
Free plan (limited); Pro ~$9.99-15/mo
Synthesia
Free Basic plan (up to 10 min video/mo); Starter $29/mo monthly or $18/mo billed yearly
Prices last checked September 2026. Plans change often — confirm on each vendor's site.
Pros and cons
Captions
Strengths- Very fast phone-based workflow for creators
- Caption styles are a core strength
- Combines editing, avatars and dubbing in one app
- Translation and dubbing available inline while editing
- Free plan exports carry a watermark
- Most AI features require a paid plan
- Limited manual timeline control compared with full editors
- Credit-based limits on generative features
Not ideal for: Editors who need multitrack timeline control or long-form production should use a desktop editor such as Descript or a traditional NLE.
Synthesia
Strengths- Mature enterprise security and compliance certifications
- Wide language coverage for localization
- Free plan to try the product
- Collaboration and API on the Creator plan
- Export limited to 1080p
- Brand kits and SCORM export only on Enterprise
- Credit and minute limits make long videos costly
- Free plan has a watermark and few avatars
Not ideal for: Social creators editing their own footage or chasing short-form trends will get more from an editor like CapCut, VEED or Captions.
Integrations
Captions
Synthesia
FAQ
What is the main difference between Captions and Synthesia?
Captions is built for mobile-first talking-head videos with AI captions, edits and AI twins; Synthesia is built for corporate training and internal comms videos with AI presenters. Key differences: Captions offers long-to-short clipping.
Is Captions or Synthesia cheaper?
Captions starts from $9.99 and Synthesia starts from $29/mo (as of September 2026). On entry price, Captions is cheaper — but compare what each plan includes, since limits differ. Always confirm current pricing on each vendor's site.
Do Captions and Synthesia have free plans?
Both Captions and Synthesia offer a free plan, so you can try each before paying.
Which is easier to use, Captions or Synthesia?
Both have a low learning curve.
What are good alternatives to Captions and Synthesia?
Other video tools worth comparing include Descript, InVideo AI and VEED.
