Synthesia is purpose-built for one thing: creating videos with AI-generated avatars. You write a script, pick an avatar, and Synthesia generates a video of that avatar speaking your script. No recording, no editing, no complex workflow. The question: is it worth the $30+/month price tag for creators?
We tested Synthesia for the use cases it's actually designed for — course creation, explainers, training videos — and compared it to HeyGen, which does something similar. This review covers what Synthesia does well, where it falls short, and whether the pricing is justified.
For context on this and other text-to-video tools, see our complete AI tool review cluster covering 8 essential tools.
What Synthesia Does
Write a script in Synthesia's editor or paste from your notes. Pick an avatar from their library (50+ realistic avatars with different appearances, genders, ages, styles). Synthesia generates a video of that avatar speaking your script in sync. Add backgrounds, music, text overlays. Export as MP4.
The avatar movements are realistic — not jerky, not uncanny valley. The lip-sync is accurate. The voice quality is good but recognizable as AI (not as good as Descript's AI voice).
Best use case: Course creators. You can create 50 course lesson videos without ever being on camera. You don't need to manage recording equipment, lighting, or audio quality. Synthesia handles all of that. The trade-off: you lose the personal connection of seeing your face.
Scoring
| Category | Score |
|---|---|
| Overall | 7.6/10 |
| Features | 8/10 |
| Ease of Use | 9/10 |
| Pricing Value | 6.5/10 |
Pricing 2026
Starter: $30/month. 10 videos/month, basic avatars, basic backgrounds.
Pro: $100/month. 100 videos/month, all avatars, custom backgrounds, API access.
Custom: $3k+/month. Your own avatar, white-label, priority support.
Real-World Test: Course Creator Workflow
We created 5 course lesson videos using Synthesia. Process:
1. Write 2-minute lesson scripts (10 minutes). 2. Paste scripts into Synthesia (1 minute). 3. Pick avatars and backgrounds (5 minutes). 4. Generate videos (15 minutes render time). 5. Review and download (5 minutes).
Total: 36 minutes to create 5 videos. Quality was professional and ready to publish to your course platform immediately. Same 5 videos shot live with a human would take 2+ hours of recording, lighting setup, and editing.
When Synthesia Makes Sense
Use Synthesia if: You create course or training content. You don't want to be on camera. You value consistency and speed. You can afford the pricing.
Don't use if: You're a YouTuber who needs your face for brand recognition. You want to edit heavily. You prefer human narration. Budget is tight and you need to minimize costs.
Comparison to HeyGen
HeyGen is the closest competitor. Similar features, similar pricing ($29-99/month). Key differences: Synthesia has more avatar options. HeyGen has better voice quality. Synthesia is simpler. HeyGen is more customizable. Most creators should try both free tiers and pick based on preference.
The Verdict
Synthesia is genuinely useful for specific creators — course creators especially. The pricing is high, but the value is real if you're creating lots of video content and don't want to be on camera.
For YouTube creators, HeyGen might be better. For course creators, Synthesia is the best in its category.
The $30/month entry point is reasonable for testing. If you generate 10+ videos per month, the math works out.
See the full cluster review for comparisons and guidance on when to use each tool.
