Best for
Best for creators and social teams producing short-form video with AI avatars and captions.
- Freelancers
- Small and mid-sized
- Enterprise
AI Avatars Comparison
Captions vs. Simli
At a glance
At a glance
Best for
Best for developers adding a real-time video face to a voice AI agent they already run.
Cataleo does not name a winner. Both statements come from the vendors themselves.
Full Comparison
| Criterion | Captions | Simli |
|---|---|---|
| Starting price | Free plan; paid from $24.99 / month Higher Scale tiers and custom Enterprise pricing above. Avatar and dubbing features run on a monthly credit system. | Free plan; paid use is pay as you go The free plan carries $10 of credit on signup and a monthly top-up of 50 minutes. Paid use is billed as you go with volume discounts; Simli does not publish a per-minute rate on its site, and the pricing detail sits behind a sign-in in the app. |
| Free trial | Free plan | Free plan with $10 of credit on signup and a monthly top-up of 50 minutes |
| Output | Digital avatars and AI twins, with captions and translation in 100+ languages | Real-time lip-synced video avatars streamed over WebRTC |
| API | Yes, the Mirage API | Yes, the product is an API |
| Avatar library | Yes, a library of digital avatars plus AI-generated avatars | Yes, 21 default faces documented for immediate use |
| Custom and cloned avatars | Yes, an AI Twin of yourself, plus AI voice cloning | Yes, upload a face image in the web app; processing takes a couple of hours |
| Languages and translation | Captions and translation in 100+ languages | No list of its own. Simli lip-syncs whatever audio it is handed, so the spoken languages come from the speech services in your own stack; for Simli Auto the documentation points at the language list of its speech-to-text provider, Deepgram, and names ElevenLabs as the text-to-speech example |
| Editor | Yes, an AI video editor that cuts scenes, overlays B-roll, removes noise, trims filler words and corrects eye contact | No, there is no video editor: faces are created in the web app and driven from your own application code |
| Learning features | No. The help centre lists no quizzes, no branching and no SCORM export; the product is aimed at social and marketing video rather than course authoring | No, Simli is an avatar streaming layer without courses, quizzes or SCORM export |
| Deployment | Cloud (SaaS), Browser-based | Cloud (SaaS), Browser-based |
| Support | Email helpdesk | Community forum |
| Onboarding | more entries Documentation and knowledge base, Video tutorials | Documentation and knowledge base |
| Company size | Freelancers, Small and mid-sized, Enterprise | Not stated |
| Integrations | Not stated | LiveKit, Pipecat |
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The short version
Key Differences
- Starting price Captions Free plan; paid from $24.99 / month Simli Free plan; paid use is pay as you go
- Free trial Captions Free plan Simli Free plan with $10 of credit on signup and a monthly top-up of 50 minutes
- Support Captions Email helpdesk Simli Community forum
- Output Captions Digital avatars and AI twins, with captions and translation in 100+ languages Simli Real-time lip-synced video avatars streamed over WebRTC
- API Captions Yes, the Mirage API Simli Yes, the product is an API
Every line is one datapoint from the table above, picked automatically. Nothing here is written text.
The trade-offs
Strengths and Limitations
Captions
Strengths
- Free plan to start
- AI Twin and voice cloning on paid plans
- Captions and translation in 100+ languages
Limitations
- Avatar and dubbing features consume monthly credits
- No learning or SCORM features stated
Simli
Strengths
- Under 300 milliseconds of added latency, so the face keeps up with a live conversation
- Open-source plugins for LiveKit Agents and Pipecat, plus JavaScript and Python SDKs
- Free plan with signup credit and a monthly minute top-up
Limitations
- Renders the face only: speech, language model and voice come from your own stack
- No editor and no finished video files, so it needs engineering work
- Custom avatar processing takes a couple of hours
Plans
Pricing
Captions
- Free $0 Limited feature set with basic editing tools.
- Max $24.99 Per month. 500 credits per month, the library of AI edit styles, digital twins and custom AI actors.
- Scale 1x $69.99 Per month. 1,400 credits per month, everything in Max.
- Scale 2x $139.99 Per month. 2,800 credits per month.
- Scale 4x $279.99 Per month. 5,600 credits per month.
- Enterprise Custom Bulk credit discounts, custom seats, dedicated account management, training-data exclusion, priority support.
Simli
- Free $0 $10 of credit on signup and a monthly top-up of 50 minutes.
- Pay as you go Not stated Usage-based billing with volume discounts.
What users say
Review Scores · opens after launch
Captions
- Ease of use
- Not rated yet
- User interface
- Not rated yet
- Onboarding
- Not rated yet
- Support and service
- Not rated yet
- Value for money
- Not rated yet
- Features
- Not rated yet
No reviews yet. Be the first to review this tool. Every review is checked for fairness before it appears, and the vendor cannot have one removed.
Simli
- Ease of use
- Not rated yet
- User interface
- Not rated yet
- Onboarding
- Not rated yet
- Support and service
- Not rated yet
- Value for money
- Not rated yet
- Features
- Not rated yet
No reviews yet. Be the first to review this tool. Every review is checked for fairness before it appears, and the vendor cannot have one removed.
Where this comes from
Where this comes from
Captions https://captions.ai · no check date recorded yet
Simli https://www.simli.com · no check date recorded yet
This table lists factual criteria taken from information the vendors publish themselves. For how we put it together, see the methodology.