In this guide (5 steps)
  1. Match the tool to the job
  2. Write the script first
  3. Test with your real script
  4. Avoid the uncanny valley
  5. Check rights

Guides · 8 min read · Updated Oct 16, 2026

Best AI video tools: Synthesia vs HeyGen vs Descript vs Canva

Honest comparison of AI video tools by job: avatar presenter videos (Synthesia, HeyGen), editing recordings (Descript), quick social videos (Canva), and AI voiceovers (ElevenLabs).

In this guide (5 steps)
  1. Match the tool to the job
  2. Write the script first
  3. Test with your real script
  4. Avoid the uncanny valley
  5. Check rights

How we pick: we compare what each tool is built for, using vendors' own documentation. Some links on this page may be affiliate links; if you buy through one we may earn a commission at no cost to you. See our disclosure. Prices and plans change often, so check each tool's pricing page.

"AI video" means very different things. Pick by the job, not the hype.

Step 1

Match the tool to the job

JobGood fit
Training or explainer video with a presenter, no cameraSynthesia, HeyGen
Translate a video into other languages with lip-syncHeyGen (check current language support)
Edit your own talking-head video or podcastDescript
Quick social posts and templatesCanva
Voiceover onlyElevenLabs, Murf
Step 2

Write the script first

Write a 60-second explainer video script about [topic] for [audience]. Spoken style, one idea per sentence, a hook in the first 5 seconds, and an on-screen text suggestion for each scene in [brackets].
Step 3

Test with your real script

Use a free plan or trial to make the same 30-second clip in two tools. Compare naturalness, how easy edits are, and export options (resolution, watermark on free tiers).

Step 4

Avoid the uncanny valley

  • Keep avatar videos short and informational. They suit training and explainers more than emotional storytelling.
  • Use screen recordings and b-roll to break up talking heads.
  • Disclose AI avatars where viewers would expect a real person.
Step 5

Check rights

Read the commercial-use terms of your plan, and never create avatars or voices of real people without written consent.

SynthesiaAI-avatar presenter videos for training and explainers.
Try Synthesia →Official site
HeyGenAI avatars, video translation and lip-sync.
Try HeyGen →Official site
DescriptEdit video and podcasts by editing the transcript.
Try Descript →Official site
CanvaDesign platform with built-in AI image and writing tools.
Try Canva →Official site
Open This spot is open for sponsors. Put your AI tool in front of readers who are learning to use AI right now. See sponsor options →

Quick tips on this topic

⚡ Pick AI video by the job

Avatar explainer, editing your own footage, or quick social clip are three different tools.

⚡ Hook in 5 seconds

Ask AI for a video script with a hook up front and on-screen text per scene.

Swipe 50+ quick AI tips →One tip per screen, 10 seconds each
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