Synthesia Review 2026: We Made 34 AI Videos to Test the B Platform

Updated March 20, 2026

Synthesia hit $100 million in annual recurring revenue, raised $200 million at a $4 billion valuation, and now counts 90% of Fortune 100 companies as customers. But beneath the impressive numbers, the platform went through a complete reinvention in late 2025. Synthesia 3.0 introduced Video Agents (AI presenters that listen and respond in real time), Express-2 avatars with full-body gestures, and an AI Playground powered by Veo and Sora models.

We used Synthesia for 6 weeks to produce 22 training videos, 8 marketing explainers, and 4 multilingual product demos. Here is what actually works in 2026 – and where the platform still falls short of the hype.

See how Synthesia compares in our Best AI Video Marketing Tools 2026 guide.

1. What Is Synthesia?

The AI video platform that turned corporate training on its head – and just raised $4 billion to go further.

Synthesia is an AI video generation platform that creates professional videos from text using AI-powered avatars and voiceovers. Instead of cameras, studios, or actors, you type a script and Synthesia generates a video with a realistic AI presenter speaking in over 160 languages. Founded in 2017 in London by a team of AI researchers from UCL, Stanford, TUM, and Cambridge, it has grown to 60,000+ customers and 1+ million users.

The platform’s sweet spot is corporate video: training, onboarding, internal communications, product demos, and knowledge base content. With the October 2025 launch of Synthesia 3.0, the platform expanded beyond passive video into interactive experiences with Video Agents (real-time conversational AI presenters), an AI Playground with access to Google’s Veo and OpenAI’s Sora models, and plans for a Copilot and Courses feature in 2026.

2. Key Features

What makes Synthesia stand out after six weeks of testing.

1. AI Avatars and Express-2

Synthesia offers 240+ stock AI avatars spanning diverse ages, ethnicities, and professional styles. The 2025 Express-2 avatars are a major leap: full-body movement with natural hand gestures, pointing, multiple viewing angles, and professional presentation style. In our testing, Express-2 avatars (Ryan, Ada, Michael, Ellie, Zola) looked significantly more natural than the previous generation – the hand gestures in particular reduce the “uncanny valley” effect. Personal Avatars let you create a digital twin from a short video recording (5 on Creator, unlimited on Enterprise). Studio Avatars ($1,000/year add-on) use professional filming for the highest quality.

3. Scoring Breakdown

How each category performed in our testing.

Express-2 avatars are a major leap. Full-body gestures, diverse selection, custom avatar options. Still occasional uncanny valley on lip sync.

160+ languages, 400+ voices, voice cloning in 29+ languages. Unmatched breadth. Some voices sound robotic on longer narrations.

4. Pricing

Four tiers from free to enterprise – but the feature gaps between them matter.

The pricing catch: The jump from Creator ($64/mo) to Enterprise (custom pricing, typically $10K+/year minimum) is steep. And critical features like SCORM export, 1-click translations, Brand Kits, and live collaboration are all Enterprise-only. If you are an L&D team that needs SCORM, you are going straight to Enterprise with no middle ground. Colossyan includes SCORM on all plans – something worth considering if that is a requirement.

5. Pros and Cons

What worked and what did not after 22 training videos and 8 marketing explainers.

-> AI voices sound robotic on longer narrations (5+ minutes) – emotion and nuance degrade noticeably
-> Built-in editor is intentionally simple – complex videos require external editing software
-> Rendering times are frustratingly inconsistent – we had videos stall at 99% multiple times
-> SCORM export, 1-click translations, and Brand Kits all locked behind Enterprise pricing
-> Content moderation can be overly restrictive and inconsistent – identical videos approved then flagged
-> Avatar licensing restrictions limit white-label and agency use cases
-> Strict no-refund policy even for early cancellations

6. Who Is Synthesia Best For?

The teams that get the most ROI from the platform.

Skip it if: You work in healthcare or medical fields (content moderation restrictions apply), you need advanced video editing capabilities (use Descript instead), you are a creative agency needing white-label (avatar licensing limits this), or you want maximum avatar expressiveness for social media (HeyGen is better for that).

7. Synthesia vs. Alternatives

How it compares to the main competitors.

Our take: HeyGen has more expressive avatars and is better for marketing and social content. Colossyan includes SCORM on all plans – a major advantage for L&D teams who cannot afford Synthesia Enterprise. D-ID is the budget option for quick talking-head clips. But for enterprise-scale video production with the deepest language support and the strongest roadmap (Video Agents, Copilot, Courses), Synthesia is still the platform to beat.

8. Frequently Asked Questions

Common questions about Synthesia in 2026.

Do Synthesia videos look realistic enough for professional use?

With Express-2 avatars, yes – for corporate training, internal communications, and product demos, the quality is sufficient. Over 85% of users cite avatar realism as a key factor in choosing Synthesia. The full-body gestures and improved lip sync Make a noticeable difference. For high-end marketing videos or social content where maximum expressiveness matters, HeyGen may produce more natural-feeling results.

9. Final Verdict

Our bottom line after 34 videos across training, marketing, and multilingual production.

Synthesia earns an 8.4/10 because it delivers on its core promise better than anyone else: type a script, get a professional video with a realistic AI presenter, in any of 160+ languages. The Express-2 avatars, AI Playground, and Video Agents roadmap show a company that is investing heavily in staying ahead. 90% of Fortune 100 adoption is not a vanity metric – it reflects genuine enterprise value.

The caveats are real. Rendering inconsistency, Enterprise-gated features, content moderation friction, and limited editing capabilities all need improvement. But if your organization needs to produce corporate video at scale – especially across languages – Synthesia remains the market leader and the safest bet in 2026.