Comparison

Theia vs HeyGen: a video tool, or someone to run your TikTok?

HeyGen turns a script into an AI avatar video. Theia decides what to make, makes it, posts it and changes what she does from the numbers.

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HeyGen is a strong, cheap tool for avatar videos when you already know what to say. Theia is for founders who want the TikTok run for them: ideas, films, posting and learning from every result.

At a glance

	Theia	HeyGen
What it is	An AI TikTok content studio. She runs the account: decides what to make, makes it, posts it and learns from the numbers.	A tool that makes AI avatar talking-head videos.
What you get	Finished short films: written, cast, shot and cut, with the same cast and places coming back from film to film.	Avatar videos, up to 30 minutes on Creator and Pro and 60 on Business, exported at up to 1080p (Creator) or 4K (Pro and Business).
Who decides what to make	Theia. She researches your niche and picks the idea and format, and tells you why.	You. Its pricing page does not say it writes scripts or picks ideas.
Posts to TikTok	Yes. Approve each film, or switch on auto-post once you trust her.	Not stated on its website. Business lists integrations with n8n, Make, HubSpot and Zapier.
Reads TikTok analytics	Yes. Views, likes, shares, saves and retention, second by second, for every post.	Not stated on its website.
Learns from results	Yes. Each result changes what she makes next. She rewrites her own process from the numbers.	Not stated on its website.
Price	$1,500 for the first month, no commitment. Scope after that is agreed together.	Free (3 videos a month, watermarked, 1 minute). Creator $29 a month ($24 billed yearly). Pro from $49. Business $149 a month plus $20 a seat.
How you buy	An engagement: a call, then a pilot month.	Self-serve sign-up.

Choose HeyGen if

You already write your own scripts and want a fast, cheap way to turn them into videos.
You need a presenter-style video: training, explainers, product walkthroughs, translations.
Your budget is tens of dollars a month, not thousands.

Choose Theia if

You want TikTok handled, not another tool to operate.
You do not know what to post, and want someone to work it out from your niche and your numbers.
You want films with a story and a recurring cast, not a talking head reading a script.
You want every post measured and the next one changed because of it.

The real difference

HeyGen answers "how do I make this video?". Theia answers "what should we post, and did it work?".

With HeyGen you still choose the idea, write the script, post it, read the analytics and decide what to change. With Theia that whole loop is the product, and you step in only where you want to.

Price, honestly

HeyGen is far cheaper: from $29 a month. Theia starts at $1,500 for a pilot month.

They are priced for different jobs. HeyGen prices the software. Theia is priced against what founders otherwise pay for someone to run the account: an agency retainer or a content hire.

Facts about HeyGen come from the sources below, checked on 2026-10-21. Prices and features change, so check the source before you decide. If something here is wrong, email hello@retina.dev and we will fix it.

HeyGen pricing (heygen.com/pricing)

Pilot month

See what a month of films does for you

Start with a $1,500 pilot month, nothing to sign. Approve every film, or switch on auto-post once you trust her.

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