HeyGen is the go-to for avatar videos and translating video into 175+ languages. Mostly is for brands that need a steady stream of social posts: carousels first, with image ads and product videos alongside.
If your content is a person talking to camera, HeyGen is the specialist. If your content is carousels and product visuals posted every week, Mostly does more of the job.
Anything in Mostly that isn't fully live yet is labelled Beta, Rolling out or Coming soon.
Taken from each pricing page in November 2026. Prices change, so check before you buy.
Flat plans, not per channel or per seat. Top up anytime at $0.01 a credit.
HeyGen's Pro plan scales by credits, from 1,000 credits at $49 up to custom volumes. Source: heygen.com, heygen.com/pricing.
A hire costs a salary. A stack of tools costs a bill per tool, and someone still has to run it all. Switch on what you pay for today and compare it with one Moss.
Your stack today
$179/mo
7 tools · $2,148 a year
With Mostly
You save
$130/mo
That's $1,560 a year, in one place, with one login.
Prices checked Nov 2026 on each vendor's pricing page: entry plan that does the job, billed monthly, USD. Foreplay, Canva, HeyGen, Creatify, OpusClip, Buffer, Hootsuite, Metricool.
Both are good tools for different jobs. Here's when we'd point you to each.
No import scripts. Moss starts from your website, so there's nothing to rebuild by hand.
Moss reads your brand and products, so carousels and product visuals are on-brand from the first draft.
Use HeyGen where a presenter matters and Mostly for your carousels and product visuals. Video posting in Mostly is rolling out.
Ask Moss for a mix of carousels and product visuals, approve, and schedule to TikTok and Instagram.
Mostly has AI UGC avatars in Beta for short talking-head clips. For realistic digital twins, long videos and translation, HeyGen is the stronger tool today.
HeyGen exports videos for you to post. Mostly publishes carousels straight to TikTok and Instagram on your schedule.
Both start at $29/mo. HeyGen's credits go to avatar video minutes; Mostly's go to carousels, images and video, with publishing included.
Paste your website. Moss learns your brand and hands you a carousel worth posting.