What Is Synthesia?
Synthesia is the world's leading AI video generation platform, used by over 50,000 companies to create professional training, educational, and marketing videos without traditional video production. Founded in 2017 by a team of AI researchers from UCL, Stanford, and Cambridge, Synthesia built the first commercially viable AI avatar system — photorealistic virtual presenters who speak your script in over 120 languages and accents with natural lip-sync, facial expressions, and body language. For online course creators, Synthesia has effectively removed the biggest barrier to video content production: the need to appear on camera, set up lighting and audio, and do multiple takes. As of 2026, the platform has generated over 50 million AI videos.
Here is how it works: you type or paste a script, choose an AI avatar from 140+ options (or create your own custom avatar), select a background (stock video, image, screen recording, or your own upload), and click generate. Synthesia renders a video of the avatar speaking your words — with accurate lip-sync, natural gestures, and appropriate facial expressions — in over 120 languages. The entire process for a 5-minute video takes about 5-10 minutes from script to final render. For online educators creating multi-module courses, this means a 20-module course that would take 6-8 weeks of traditional video production can be completed in 2-3 weeks, with the additional benefit that updating any module requires only a text edit — not a reshoot.
Key Features for Course Creators
140+ AI Avatars
Choose from 140+ photorealistic AI presenters spanning diverse ages, ethnicities, and professional styles — from casual hoodie-wearing instructors to suited corporate trainers. Avatars perform natural gestures (hand movements, head tilts, eyebrow raises) synchronized with the script. Custom Avatar (Enterprise plan) lets you create a digital clone of yourself that can generate unlimited content — perfect for course creators who want to maintain their personal brand without endless recording sessions.
120+ Languages & Accents
Type your script in English and generate videos in over 120 languages with natural-sounding AI voices and accurate lip-sync for each language. This is Synthesia's killer feature for course creators who want to sell globally. One course, one script, 120+ localized versions — without hiring voice actors, translators, or video editors for each language. Each language version renders in minutes, and you can customize the avatar per language (matching the presenter to the target market's cultural expectations).
PowerPoint-to-Video
Upload your existing PowerPoint or Google Slides presentation and Synthesia converts each slide into a video scene. Add an AI avatar to present the content while your slides display as the background. This is the fastest path from existing course materials to professional video content. Most course creators already have slide decks — Synthesia turns them into video modules with an AI presenter in under 30 minutes for a typical 20-slide deck. You can add annotations, on-screen text, and transitions between slides for a polished final result.
Screen Recorder + AI Avatar
Record your screen (software tutorial, data walkthrough, design demo) and add an AI avatar in the corner who narrates what you are doing. This creates the familiar "talking head + screen share" format without you ever appearing on camera. For course creators teaching software skills — coding, design tools, data analysis, CRM platforms — this feature combines the clarity of screen recording with the engagement of a human-seeming presenter. The avatar's script syncs with what happens on screen, creating the illusion that the presenter is guiding the learner through each step.
Branded Templates & Media Library
Synthesia includes 60+ professionally designed video templates optimized for course content: lesson introductions, concept explanations, case studies, module summaries, and assessments. The media library provides millions of royalty-free images, video clips, and music tracks from Shutterstock and Unsplash — all licensable for commercial course content. Upload your own brand assets (logos, colors, fonts) and Synthesia automatically applies them across all your videos for a consistent, professional look. Course creators can save custom templates for module intros, lesson screens, and outro screens to maintain visual consistency across an entire course catalog.
SCORM & LMS Export
Export videos in SCORM 1.2, SCORM 2004, or xAPI format for direct upload to any major Learning Management System including Moodle, Canvas, Blackboard, and Thinkific. SCORM export tracks learner progress, completion status, and quiz scores — essential for corporate training and accredited online courses. Videos can be embedded with interactive quizzes (multiple choice, true/false) that report results to your LMS. This feature makes Synthesia viable for serious course businesses that need SCORM-compliant content rather than just standalone video files uploaded to YouTube or Vimeo.
How to Create Your First AI Course Video: Step-by-Step
Here is the exact workflow a course creator follows to produce their first AI-powered lesson video in Synthesia. Walk through these steps once and the process becomes second nature.
Sign Up & Choose Your Plan
Go to synthesia.io and create an account. The free demo lets you create one test video (limited to a single scene and avatar) so you can experience the interface before paying. For course creators who are serious about building a course library, start with the Creator plan ($89/month) — it gives you 30 minutes of video generation per month, which translates to roughly 6 x 5-minute lesson videos monthly. If you are building a full course catalog with 50+ videos and need custom branding, the Enterprise plan with custom avatars and unlimited minutes makes more economic sense despite the higher upfront cost. Pro tip: plan your course scripting before subscribing so you can batch-produce videos during your first month and maximize your minutes.
Write Your Script in the Video Editor
The Synthesia video editor is slide-based — each slide is a scene in your video, and you write the script on a per-slide basis. A typical 5-minute course lesson has 8-12 slides. For each slide, write the avatar's spoken script (keep it to 30-60 seconds per slide — longer than that and learners disengage) and choose what appears on the background: a PowerPoint slide, an image, a video clip, or your screen recording. The editor shows a running time estimate so you can see how long each slide will be. Synthesia's AI can also generate a script from a topic prompt — for example, "Explain the difference between active and passive investing in 300 words" — but most experienced course creators prefer to write their own scripts to maintain their teaching voice and instructional quality.
Select Your Avatar & Customize the Visuals
Browse the 140+ avatar library and choose a presenter that matches your course's tone and audience expectations. For a professional development course for corporate learners, select a suited avatar with a polished, minimalist background. For a creative skills course, a casual avatar with a modern office or home studio background works better. You can use different avatars for different course modules — for example, a "host" avatar for introductions and summaries and "expert" avatars for deep-dive technical modules. Customize colors, add your logo, and upload your course branding. Set your video dimensions — 16:9 landscape for desktop consumption, 9:16 vertical for mobile-first learners (increasingly important for course platforms with mobile apps like Udemy and Skillshare).
Generate & Review
Click generate and wait approximately 2-4 minutes for a 5-minute video. Watch the result carefully: check the avatar's lip-sync, verify that text overlays appear at the right moments, ensure slide transitions are smooth. Synthesia allows you to re-render individual slides rather than the entire video — if slide 7 has a timing issue, fix only slide 7 and regenerate. This saves minutes and time. Pay special attention to: pronunciation of technical terms or brand names (you can add phonetic spellings in the script), visual clarity of text-heavy slides (small text on complex slides may be hard to read — use the zoom and highlight features), and overall pacing (if a slide feels rushed, split it into two slides). Once you are satisfied, download the MP4 file and upload to your course platform.
Localize Your Course to Multiple Languages
This is where Synthesia unlocks revenue that would otherwise be uneconomical. Take your completed English video script, click "Translate," select your target languages, and Synthesia generates localized versions with language-appropriate avatars, translated text, and native-sounding AI voices. The entire localization process for a 10-module course into 5 languages — 50 videos — can be completed in a single afternoon. Upload each language version to your course platform and price them as separate courses or bundle them. Course creators on platforms like Udemy report that localized versions of their courses generate 20-40% additional revenue with near-zero marginal production cost. The quality bar: Synthesia's AI translation is good enough for educational content where factual accuracy matters more than poetic language, but for marketing videos or brand content, professional human review of the translation is recommended before publishing.
Real-World Use Cases
🎓 Online Course Creator: 12-Module Business Course
A solo course creator built a 12-module business strategy course using exclusively Synthesia. Using a custom avatar created to look like themselves (Enterprise plan), they wrote scripts for each module, uploaded their existing PowerPoint slides as backgrounds, and generated all 36 videos (3 lessons per module) over 3 weekends. Total video runtime: approximately 6 hours. Traditional video production for the same course would have required renting a studio, hiring a videographer, and spending 3-4 weeks filming and editing — at an estimated cost of $8,000-$12,000. With Synthesia, the total time investment was roughly 40 hours (scripting + video generation + review), and the cost was the Synthesia subscription plus the one-time custom avatar creation fee ($1,500). The course launched on Teachable and generated $15,000 in its first quarter. When feedback showed that Module 7 needed a clearer explanation of competitive analysis frameworks, the creator updated the script for three videos, re-rendered them, and republished — all in under 2 hours, without filming a single frame.
🏢 Corporate L&D: Global Compliance Training
A Fortune 500 company's Learning & Development team used Synthesia to create mandatory compliance training for 15,000 employees across 12 countries. The training covered data privacy (GDPR, CCPA), anti-bribery (FCPA, UK Bribery Act), and workplace safety — all topics that require country-specific regulatory content. The L&D team wrote one master script in English, then used Synthesia's translation and localization to produce versions in 9 languages, swapping avatars to match each region's cultural norms. The entire project — 72 videos (8 topics × 9 languages) — was produced by a team of 3 L&D specialists in 6 weeks. A traditional video production agency had quoted 6 months and $280,000 for the same scope. The compliance team also leveraged SCORM export to track completion and quiz scores in their SAP SuccessFactors LMS, ensuring audit-ready records for regulators.
Synthesia Pricing & Plans (2026)
| Plan | Price | Video Minutes | What You Get |
|---|---|---|---|
| Starter | $29/month ($22/month annual) | 10 min/month | 1 seat, 30+ AI avatars, 120+ languages, basic templates, standard AI voices, MP4 download, 720p resolution. |
| Creator | $89/month ($67/month annual) | 30 min/month | Everything in Starter plus: 90+ avatars, premium AI voices with natural intonation, custom fonts and brand kit, PowerPoint import, screen recorder, SCORM export, 1080p resolution, priority rendering. |
| Enterprise | Custom quote | Unlimited | Everything in Creator plus: Custom Avatar (digital clone of yourself), unlimited seats, team collaboration, advanced security (SAML SSO), custom templates, dedicated account manager, API access, 4K resolution, custom usage analytics. Custom avatar creation: $1,000-$2,500 one-time fee. |
Pricing verified June 2026. Annual plans save approximately 25%. The free demo lets you create one test video. Unused monthly minutes do not roll over. For course creators producing a 20-module course (approximately 80-120 minutes of video), the Creator plan's 30 min/month means spreading production over 3-4 months — or contacting Synthesia for a custom overage package if you need to produce faster.
Synthesia vs Competitors: How It Compares
Synthesia pioneered the AI avatar video space, but several strong competitors have emerged. Here is how Synthesia stacks up against the alternatives that course creators most commonly evaluate.
| Feature | Synthesia | Colossyan | HeyGen | Elai |
|---|---|---|---|---|
| AI Avatars | 140+ stock + custom clone (Enterprise) | 50+ stock + custom clone | 100+ stock + custom clone + AI photo avatar | 40+ stock + custom clone |
| Languages | 120+ | 70+ | 40+ | 75+ |
| PowerPoint Import | ✅ Yes — converts slides to video scenes | ✅ Yes — similar conversion | ❌ No direct PowerPoint import | ✅ Yes — PPTX and PDF import |
| Screen Recording | ✅ Built-in recorder + avatar overlay | ❌ No built-in screen recording | ✅ Screen recording with avatar | ❌ No built-in screen recording |
| SCORM/LMS Export | ✅ SCORM 1.2, 2004, xAPI, cmi5 | ✅ SCORM + interactive elements (quizzes, branching) | ❌ No SCORM export | ✅ Basic SCORM export |
| Interactive Video | ⚠️ Basic quizzes and clickable hotspots | ✅ Branching scenarios, quizzes, in-video surveys | ❌ No interactive elements | ⚠️ Basic clickable elements |
| Custom Avatar Creation | ✅ Studio filming ($1,000-$2,500) | ✅ Studio filming (pricing varies) | ✅ Studio or webcam ($499-$1,499) | ✅ Studio filming |
| Video Resolution | Up to 4K (Enterprise) | 1080p | 1080p | 1080p |
| Team Collaboration | ✅ Workspaces, comments, approval workflow (Enterprise) | ✅ Team workspaces with roles and permissions | ✅ Team workspaces | ⚠️ Limited collaboration features |
| Starting Price | $29/month (10 min) | $27/month (10 min) | $29/month (15 min) | $29/month (15 min) |
| Enterprise Features | Unlimited video, SSO, API, dedicated manager | Unlimited video, SSO, API, interactive video builder | Unlimited video, SSO, API, avatar marketplace | Unlimited video, SSO, basic API |
| Best For | Course creators & corporate L&D teams prioritizing language breadth, SCORM compliance, and polished output | Corporate training teams needing interactive video with branching scenarios and assessments | Content creators and marketers prioritizing avatar quality, customization, and social media formats | Budget-conscious creators who need PPTX import and basic AI video generation |
Comparison verified June 2026. Synthesia leads on language breadth and enterprise maturity. Colossyan is stronger for interactive corporate training. HeyGen offers the most flexible avatar customization options. Elai is a solid budget alternative with good PPTX import.
Pros & Cons
Pros
- Removes the camera barrier completely: For educators with camera anxiety or those who simply do not want to spend time on lighting, makeup, and multiple takes, Synthesia eliminates the most stressful part of course creation. Your course looks and sounds professional regardless of your on-camera comfort level.
- 120+ language localization is a genuine revenue multiplier: One course becomes ten courses with minimal additional effort. Course creators on Udemy and Teachable report localized versions generating 20-40% incremental revenue. No other AI video tool matches Synthesia's language breadth and per-language lip-sync quality.
- Script-first workflow is faster than traditional video: Writing a script and generating a video takes roughly 10% of the time of traditional production. This speed advantage compounds dramatically for multi-module courses. A 20-module course: traditional production = 6-8 weeks; Synthesia = 2-3 weeks.
- Updates are trivial — no reshoots needed: Industry regulation changes? Competitor launched a feature? Simply edit the script, re-render the affected video, and republish. Traditional video would require re-filming with the same lighting, same outfit, same setup — or accepting an obviously different-looking update video.
- SCORM export makes it LMS-compatible: The ability to export SCORM-compliant videos with embedded quizzes and completion tracking means Synthesia content works in enterprise LMS environments — Moodle, Canvas, Blackboard, SAP SuccessFactors — where simple MP4 uploads would not.
- Enterprise customers validate quality: Amazon, Accenture, Johnson & Johnson, and 50,000+ other companies use Synthesia for internal training. When Fortune 500 L&D teams trust a tool for employee training, it signals that the quality meets professional standards.
Cons
- AI avatars lack human warmth and spontaneity: While technically impressive, AI avatars cannot replicate the genuine warmth, humor, and spontaneous connections of a real instructor. For courses where instructor personality and relatability are the primary selling points — lifestyle content, motivational courses, creative workshops — AI avatars will feel noticeably impersonal to learners.
- Monthly minute limits constrain production pace: The Creator plan's 30 minutes/month is insufficient for building a full course in one month. You either need to spread production over multiple months (which kills momentum) or upgrade to Enterprise (which is expensive for solo creators). This is Synthesia's most significant pricing friction point for course creators.
- No free tier for ongoing use: The free demo gives you one test video. After that, every video costs. For educators who want to experiment with AI video before committing, this is a barrier. HeyGen and Elai offer more generous free tiers with ongoing monthly credits.
- AI voices can sound flat for storytelling: Synthesia's premium AI voices are excellent for instructional and technical content — the even, clear tone works well for explaining concepts. But for storytelling, case studies with emotional resonance, or motivational content, even the best AI voices lack the dynamic intonation and emotional range of a skilled human narrator. Course creators combining Synthesia with their own voiceover (recording their audio separately) often achieve the best results.
- Custom avatar requires studio visit: While HeyGen allows you to create a custom avatar from a webcam recording, Synthesia requires a visit to one of their studios (London, New York, or partner studios) for custom avatar creation. This adds travel cost and logistical friction that competitors have eliminated.
- Limited interactive video capabilities: Compared to Colossyan, Synthesia's interactive video features — branching scenarios, in-video decision points, adaptive learning paths — are basic. If your course design requires learners to make choices that affect the video's path, Colossyan is the stronger platform.
Frequently Asked Questions
Is Synthesia content accepted on Udemy and Coursera?
Udemy's current policy (2026) allows AI-generated content as long as the instructor discloses the use of AI tools and the educational value meets Udemy's quality standards. Specifically, Udemy requires: (1) the instructor must own the intellectual property rights to the AI-generated content, (2) the instructor must verify the factual accuracy of all content, and (3) AI usage must be disclosed in the course description. Coursera has a more stringent review process — AI-generated content must be submitted for review and approved before publication, and Coursera explicitly reserves the right to reject courses that rely disproportionately on AI-generated content without substantial human instructional design input. Skillshare and LinkedIn Learning currently do not have explicit AI content policies but have indicated they are developing guidelines. Before publishing AI-generated course content on any platform, check the latest content policy — these guidelines are evolving rapidly as AI video tools become more prevalent.
Can I use my own face as an AI avatar?
Yes — this is Synthesia's Custom Avatar feature, available exclusively on the Enterprise plan. The process works as follows: Synthesia's team films you for approximately 10-15 minutes in one of their professional studios (London, New York, or partner studios globally). During filming, you read a prepared script that captures the full range of your facial movements and vocal patterns. Synthesia's AI model is then trained on your facial expressions, mouth movements, voice, and mannerisms — a process that takes approximately 2-3 weeks. Once complete, your custom digital avatar can generate unlimited video content speaking any language Synthesia supports, without you ever needing to record again. You retain full ownership and rights to your custom avatar. Pricing: custom avatar creation costs $1,000-$2,500 as a one-time fee, depending on your Enterprise plan details. This feature is most popular with established course creators who have a personal brand and existing learner base — the avatar preserves their recognizable teaching presence while eliminating video production time permanently.
How accurate is the AI lip-sync across languages?
Synthesia's lip-sync is powered by a proprietary deep learning model that maps phonemes — the individual sounds that make up speech — to corresponding facial muscle movements on each avatar. The model was trained on thousands of hours of human speech video across multiple languages. Accuracy varies by language family: for English, the lip-sync is excellent — the avatar's mouth movements closely match the audio with very few visible desyncs (Synthesia reports a 98% accuracy rate for English based on internal user satisfaction surveys). For Romance languages (Spanish, French, Italian, Portuguese) and Germanic languages (German, Dutch, Swedish), accuracy is similarly high — these languages share enough phonetic overlap with English that the model transfers well. For languages with distinctly different phonetic structures — Mandarin Chinese, Japanese, Korean, Arabic, Hindi — the accuracy is slightly lower, with occasional minor mismatches noticeable on close viewing. Synthesia's v3 lip-sync model, released in 2025, significantly improved Asian language accuracy by incorporating native-speaker training data for each language. For course creators localizing into non-European languages, Synthesia recommends generating a test video in each target language and reviewing the lip-sync carefully before scaling to full course production. In most cases, the discrepancies are subtle enough that learners focused on the educational content (not scrutinizing the avatar's mouth) do not notice or are not distracted by them.
What is the actual turnaround time from script to finished video?
Based on feedback from active course creators, the realistic timeline for producing a 5-minute educational video in Synthesia is: 20-30 minutes to write and refine the script (assuming you know your subject matter), 10-15 minutes to select and configure your avatar, background, and slide visuals in the Synthesia editor, 3-5 minutes for the AI to render the video (varies slightly based on server load and video complexity), and 10-15 minutes for quality review — checking lip-sync, verifying text overlays, ensuring slide timings feel natural, and re-rendering any problematic slides. Total end-to-end: approximately 45-75 minutes per 5-minute video for a creator who is familiar with the platform. First-time users should budget closer to 2 hours per video as they learn the interface. For a 20-module course with 60 total videos (3 per module), the total production time is roughly 45-75 hours — spread over 3-4 weekends or 2-3 weeks of full-time work. By contrast, traditional video production for the same course would require 200-400 hours when accounting for filming, retakes, editing, and post-production. The time savings are real, but Synthesia is not instant — the creative decisions (scripting, visual design, pacing) still require human judgment and iteration.
Does Synthesia own the videos I create?
No. Synthesia's terms of service (as of June 2026) clearly state that you retain full ownership of all content you create using the platform — including the video files, scripts, and any custom assets you upload. Synthesia does not claim any ownership, license, or usage rights over user-generated content. This is essential for course creators: you own your course videos outright and can sell, license, distribute, or modify them however you choose. The AI avatars themselves remain Synthesia's intellectual property — you cannot extract an avatar and use it outside the Synthesia platform — but the videos you generate using those avatars are fully yours. Custom Avatars (your own digital clone) are an exception: you retain full rights to your custom avatar, though the underlying AI technology that animates it remains Synthesia's IP. If you cancel your Synthesia subscription, you keep all previously generated videos and can continue using them indefinitely. You simply cannot generate new videos without an active subscription. This is a standard SaaS model and is consistent across all major AI video platforms.
Can I use Synthesia for YouTube course previews or marketing videos?
Yes, and many course creators do exactly this. The most common workflow: create full course modules as SCORM exports for your paid LMS, then use Synthesia to generate shorter preview or trailer videos (2-3 minutes) that you publish on YouTube as free content to attract learners to your paid course. Synthesia's terms permit commercial use of generated videos — including YouTube monetization, social media promotion, and embedding in paid courses. The key consideration for YouTube specifically: YouTube's algorithm evaluates viewer engagement signals (watch time, likes, comments) regardless of whether your video uses an AI avatar or a human presenter. If your content is valuable, the AI avatar will not hurt your performance. But if the content feels generic — which is a risk when using AI voices without custom scripting — viewers will click away, and that will hurt your metrics. The course creators who succeed with AI-avatar YouTube content invest heavily in scripting and visual design to compensate for the avatar's lack of human warmth. One effective strategy: use the AI avatar for the educational "meat" of the video (the lesson content) but record a brief human intro and outro on your webcam to establish a personal connection with viewers. This hybrid approach combines the efficiency of AI video with the trust-building of human presence.