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Head-to-Head Comparison
Leonardo.ai vs Synthesia
An honest, side-by-side breakdown of pricing, features, and security — so you can pick the right tool.
Published Last updated
- Leonardo.ai starts at US$12/mo and Synthesia at £23/mo — published in different currencies, so not a like-for-like figure.
- On privacy, Synthesia offers multi-factor authentication where Leonardo.ai does not.
- Leonardo.ai is best for developers adding AI image generation via an API; Synthesia for teams building AI video into their products.
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Leonardo.ai
AI Image
7.6/ 10
Free · Free tier
Best for developers adding AI image generation via an API
Visit Leonardo.aiSee all AI Image Generators →
Synthesia
AI Video
8.1/ 10
Free · Free tier
Best for teams building AI video into their products
Visit SynthesiaSee all AI Video →Some “Visit” links are affiliate links. How we earn →
Feature comparison
| Feature | Leonardo.ai | Synthesia |
|---|---|---|
| CompareMyAI score | 7.6 / 10 | 8.1 / 10 |
| Free tier | ||
| API access | ||
| Open source | ||
| Enterprise ready | ||
| GDPR compliant | ||
| Vendor holds SOC 2 | ||
| Vendor holds ISO 27001 | ||
| MFA supported | ||
| Trains on your data | Yes |
Certifications may only cover business or enterprise plans. Check the vendor’s trust page for your plan.
Synthesia comes out ahead — and you can try it free.
Try Synthesia freeAffiliate link · how we earn
Pricing
Price checked with vendor on
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FreeFree
EssentialUS$12/mo ≈£9.02/mo
PREMIUMUS$30/mo ≈£22.55/mo
ULTIMATEUS$60/mo ≈£45.09/mo
FreeFree
Enterprise—
Always check the provider's site for the latest pricing.
Pros & cons
Leonardo.ai
Pros
- +GDPR compliant — UK GDPR and EU GDPR explicitly listed in ToS
- +Free tier confirmed in ToS — usable without payment
- +API available with separate billing for developer integration
- +Wide range of fine-tuned models for games, concept art, and illustration
Cons
- −Pricing not verified — official site inaccessible to automated tools; check leonardo.ai for current plans
- −Free user content used to train AI models — paid private content exempt
- −SOC2 and ISO 27001 not confirmed from official sources
Synthesia
Pros
- +Professional AI avatar videos
- +140+ languages
- +No filming required
- +Good for corporate training and eLearning
- +SOC2 certified
Cons
- −Expensive for small teams
- −Avatar realism still has uncanny valley moments
- −Limited creative flexibility
Our take— Synthesia wins
Based on our comparison of published pricing, features, and compliance data, Synthesia scores 8.1/10 to Leonardo.ai's 7.6/10. Synthesia pulls ahead with multi-factor authentication and a no-training-on-your-data policy. Leonardo.ai stays close but doesn't lead on any single attribute here. Synthesia is the call when multi-factor authentication matters — otherwise Leonardo.ai.
Frequently asked questions
Does Leonardo.ai train on your data?
Based on published vendor information, Leonardo.ai may use your data to help train its models. Training is sometimes opt-out, or switched off on paid and business plans, so review the privacy settings in your account.
Does Synthesia train on your data?
Based on published vendor information, Synthesia does not train its models on your data. Policies can differ by plan and change over time, so it is worth confirming the current terms on the vendor's site.
Are Leonardo.ai and Synthesia GDPR compliant?
Based on published vendor information, both Leonardo.ai and Synthesia state they are GDPR compliant. Vendor-level compliance does not remove your own obligations when you process personal data through either tool.
Do Leonardo.ai and Synthesia have a free tier?
Yes — both Leonardo.ai and Synthesia offer a free tier, so you can try each one before committing to a paid plan. Free tiers usually come with usage limits.
Which has an API, Leonardo.ai or Synthesia?
Both Leonardo.ai and Synthesia offer API access, so developers can build either into their own products and workflows.