Matchup: HeyGen and Synthesia

HeyGen and Synthesia publish their plan limits differently on 4 of the eight: generations at once, seats, unused credits and extra credits. From 2 source pages, read 2026-09-25; no maker pays to be listed.

Fig. 1 Solid: published. Hollow: not on the pages read.

HeyGen and Synthesia, limit by limit, read 2026-09-25.
Limit	HeyGen	Synthesia
Generations at once	Relative to other plans	Not stated on the pages read
Priority and slow lanes	Not stated on the pages read	Not stated on the pages read
Storage allowance	Not stated on the pages read	Not stated on the pages read
How long files stay	Not stated on the pages read	Not stated on the pages read
Seats and collaborators	Counted per seat	Collaborators invited
Project caps	Not stated on the pages read	Not stated on the pages read
Unused plan credits	Roll over for a while	Reset each cycle
Extra credits	Extra credits on sale	Not stated on the pages read

Inclusion rule. The eight limits every tool on the sheet is read for. Order. The order limits take on every tool page.

1How the two compare

HeyGen publishes generations at once and extra credits, which Synthesia's pages leave out. Both publish seats, in different forms: counted per seat for HeyGen, collaborators invited for Synthesia. Both publish unused credits, in different forms: roll over for a while for HeyGen, reset each cycle for Synthesia. Neither publishes queue lanes, storage, file keeping and project caps.

2The published wording where they differ

Generations at once

2x more concurrency than Pro
HeyGen, pricing page

Synthesia publishes nothing on this limit.

Seats and collaborators

Invites & team management
HeyGen, pricing page

1 editor & 5 guests
Synthesia, pricing page

Unused plan credits

Monthly subscribers' unused credits roll over for one more month.
HeyGen, pricing page

If you are under your video credit limit at the end of a billing period, the unused videos do not roll over
Synthesia, pricing page

Business plan
Twice the concurrency of Pro on BusinessHeyGen, pricing page / recorded 2026-09-25
Business plan
Team members added per seat on BusinessHeyGen, pricing page / recorded 2026-09-25
Plan cards
One editor with three guests on Starter and five on CreatorSynthesia, pricing page / recorded 2026-09-25
Credits FAQ
Monthly subscribers' unused credits roll over for one more monthHeyGen, pricing page / recorded 2026-09-25
Pricing FAQ
Unused video minutes do not roll over into the next monthSynthesia, pricing page / recorded 2026-09-25

3HeyGen and Synthesia against a third tool's published limits

SceneMixer's published figure on the limits where HeyGen and Synthesia differ, read 2026-09-25.
Limit	SceneMixer	Source
Generations at once	3 at once on a free account; 5, 8, 10, 15 and 20 on the paid tiers	SceneMixer, guide to what a paid plan changes
Unused plan credits	Membership credits land in the same balance as bought credits and do not expire at month end	SceneMixer, guide to what a paid plan changes
Extra credits	Credit packs bought as needed, with no monthly fee	SceneMixer, pricing page

Inclusion rule. Limits on which the two tools differ and SceneMixer publishes a figure or a rule. Order. The order limits take on every tool page.