How they really differ
CapCut needs raw material and gives you control over every cut. HeyGen creates the raw material, the presenter clip, but you have less control over pacing than in a real edit.
Many creators use HeyGen for the talking segment and CapCut for everything around it: B-roll, captions, music and the final export for each platform.
Check the current terms for both before you monetize: commercial use of templates, music and avatars can depend on your plan.
Using both
Generate the presenter clip in HeyGen, then drop it into CapCut to add captions, B-roll and a hook for Shorts.
The verdict
CapCut to edit, HeyGen to generate a presenter. If you only pick one and you have footage, start with CapCut.
Want the full write-up on each? Read our CapCut review and HeyGen review.