Synthesia
Turn a script into a polished presenter video — no camera, studio or actor needed.
About
Synthesia is an AI video platform for business communication: type a script, choose a realistic avatar and voice, add slides, screen recordings and branding, and render a presenter-led video in minutes. It is built for training, onboarding, internal updates and multilingual explainers rather than cinematic storytelling. Its credit system covers video, dubbing, surveys and newer agent-made video from one shared pool.
Key features
- A large library of stock AI avatars, plus personal avatars created from your own likeness
- Script-to-video creation from a prompt, document, link, script, slides or blank canvas
- Voices and translation in more than 140 languages, with lip-synced dubbing for existing video
- Templates, brand kits, screen recording and media uploads for consistent company videos
- An AI video assistant that drafts scripts and scenes from a short brief
- Interactive video features including calls to action, branching paths and quizzes
- Roleplay sessions for practising conversations, plus an API and team collaboration on higher plans
Pricing
Starter plan $19/month; Pro plan $89/month
Prices change — check the official pricing page. The official page also shows discounted first-month prices and annual-billing options that can vary by region, so confirm the checkout total before paying.
Best for
Learning teams, HR, sales enablement and companies producing regular training and explainer videos.
Limitations to know
AI video can contain warped movement, inconsistent faces or objects across frames, and short clip-length limits, so output needs human checking. Avatar delivery can also feel stiff or robotic for emotional or conversational material, and presenters stay largely in one frame rather than moving naturally through a scene.
What users like
- Ease of use, with a script turning into a professional-looking video in minutes without filming or editing skill
- Time and cost savings compared with booking a studio, presenter and editor for every update
- Easy updates and translation, so a changed process or a new language does not require a reshoot
- A wide avatar and voice library that helps teams keep a consistent presenter style across courses
What users complain about
- Avatars sometimes looking flat, stiff or unnatural, with limited gestures and emotional range
- Voices occasionally sounding robotic, with mispronunciations and pacing that needs script tweaks
- Limited avatar customisation and flexibility for highly tailored or complex videos
- Monthly minute and credit limits that can feel tight for teams producing video at volume
Our editorial score
Our editorial score: 8.0/10 — our own judgement, not an aggregate of user ratings. See the full review for the reasoning.
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