HeyGen vs Higgsfield vs AdsGen: AI video ad tools compared

Both pricing pages say credits, and the word is doing very different work in each case.

HeyGen meters time. Its pricing FAQ publishes a burn rate per minute of finished video: 3 credits a minute on the Avatar III engine, 20 a minute on the realistic Avatar IV and V engines, 2 a minute for audio dubbing, 5 a minute for full lip synced translation and 20 a minute for Video Agent. Length is the only variable that matters, and the seven-fold swing between Avatar III and Avatar IV is set by a dropdown inside the editor rather than by your plan.

Higgsfield meters compute. It publishes a rate per model, per resolution, per interval: Kling 3.0 at 1080p is 8 credits per 5 seconds, Wan 2.5 Speak at 1080p is 20 credits per 5 seconds, Google Veo 3.1 at 1080p is 29 credits per 4 seconds, Seedance 2.0 at 1080p is 45 credits per 5 seconds and Sora 2 Pro at 1080p is 50 credits per 4 seconds. The same 30 second clip therefore costs 48 credits or 375 depending purely on which model you picked, a spread of nearly 8x within one subscription.

Credit that both vendors publish these numbers at all. Most of this category does not, and it is the reason the rest of this page can show arithmetic instead of adjectives.

Convert both to the same unit and the comparison finally means something. Take a 30 second vertical ad with a person talking to camera, the standard unit of paid social creative.

On HeyGen, 30 seconds on the realistic Avatar IV engine is 10 credits, because the rate is 20 a minute. The Creator plan carries 600 credits for $29 a month, or $24 on annual billing, which works out to about 60 of those ads a month at roughly 48 cents each. Drop to the Avatar III engine at 3 credits a minute and the same plan covers about 400 of them, though the delivery is visibly less lifelike.

On Higgsfield, the equivalent depends on which speak model you choose. Kling Speak at 1080p is 4 credits per 2 seconds, so 60 credits for 30 seconds. Higgsfield Speak 2.0 at 720p is 14 per 5 seconds, so 84. Wan 2.5 Speak at 1080p is 20 per 5 seconds, so 120. The Plus plan carries 1,200 credits for $47 a month on annual billing, which lands between 10 and 20 finished ads at roughly $2.35 to $4.70 each.

So for this specific job, HeyGen is about five times cheaper per ad on a plan that also costs less. That is not a knock on Higgsfield, which is not primarily a talking-head tool and never claimed to be. It is simply the number nobody publishes, and it should decide the shortlist if talking creators are what you are buying.

The $19 Starter tier is the price everyone quotes for Higgsfield, and it is genuinely cheap. It is also the wrong number for an advertiser.

Higgsfield's own compare table lists UGC builder as not included on Free and not included on Starter. It arrives at Plus. Higgsfield speak, the lip sync feature, follows exactly the same pattern, as does start and end frame control. Starter is further described as access to selected models only, with no access to Seedance 2.5 or Seedance 2.0, carrying only the Fast and Mini variants.

What confuses the reading is a separate line called Higgsfield ads, which is included on every tier including Free. Scan the table quickly and it looks as though advertising is covered from the bottom of the range. It is not, in the sense of putting a person on camera saying your hook. The cheapest Higgsfield plan that does that is Plus at $47 a month on annual billing, or $59 month to month, which changes the entry comparison against HeyGen from $19 against $29 to $47 against $29.

HeyGen's free tier, by contrast, makes three lip synced videos a month at up to a minute each. Watermarked, and only three, but enough to judge whether the output is good enough before any money moves.

These two treat unused credits in opposite ways, and over a year the difference is real money.

HeyGen rolls credits over. Monthly subscribers carry unused credits into one further month. Annual subscribers accumulate them until the renewal date. Nothing survives cancellation. For lumpy campaign work, that is a genuinely useful property: a quiet August funds a busy September.

Higgsfield does not. Its FAQ states plainly that subscription credits do not roll over and expire at the end of each credit cycle. Buy Plus for a launch month and the unused half of a quiet month is gone.

There is a scheduling detail underneath that which almost nobody notices. Higgsfield refreshes monthly plans on your original purchase date, but refreshes annual plans every 30 days from the subscription start date. Thirty days is not a month. Over a year that is 12.17 cycles, so an annual subscriber's credit reset drifts forward through the calendar and will eventually land twice inside a single month. Harmless until you are reconciling usage against monthly reporting, at which point it is quietly confusing. Full detail is in our <a href="/blog/higgsfield-pricing">Higgsfield pricing breakdown</a>.

Higgsfield leads on unlimited generation, and the offer is real. The plan cards attach 7 day unlimited windows to named models, Nano Banana 2 and Kling 3.0 on Plus, with Nano Banana Pro added on Ultra, and a separate 365 Unlimited promotion grants a full year of unlimited generation on the models listed in each plan card.

Its FAQ then explains the mechanism, and this is the sentence to read twice: "Unlimited generations run in the standard queue, while credit-based generations always run in the priority queue." Unlimited is unlimited in volume and deliberately slower in delivery. The FAQ adds that speed and concurrency may vary during exceptionally high load, and that you can switch back to Credit Mode specifically to bypass the standard queue and return to maximum speed.

Two further limits matter if you are building a workflow rather than clicking around. Unlimited models and free generations are, verbatim, accessible only via higgsfield.ai and not accessible on MCP, the CLI, Canvas or Supercomputer, so API-driven generation is billed in credits. And the fair use clause states that unlimited is designed for personal, human use only, with automation tools, credential sharing and reselling access strictly prohibited. An agency producing client creative should read that clause before treating unlimited as production capacity.

HeyGen has no unlimited concept at all. Everything draws on credits at one speed, which is less exciting and easier to plan.

Choose HeyGen if the output is a person talking to camera and you need a lot of it. The economics are better by roughly five times per finished ad, credits roll over, the burn rates are published per minute so a quarterly forecast is possible, and 175 languages on every paid tier is a serious localisation story. It is also the only one of the two with a free tier that produces usable lip synced video.

Choose Higgsfield if your work is broader than talking heads. Access to Sora 2, Veo 3.1, Kling 3.0, Seedance and Nano Banana Pro on one bill is a strong offer, the image models are cheap enough at 0.12 credits an image to justify the subscription on product photography alone, and the published per second rates mean you can model a budget before you spend. Just start the comparison at Plus rather than at Starter, and read the Ultra price as a floor.

The case for neither is narrower and worth naming. Both solve production. Neither solves the part that actually stalls creative testing, which is deciding what the ad should say. A model shelf and a credit balance do not help with an empty script field, and the script features on both sides tend to produce competent copy rather than a real angle.

That is the gap AdsGen was built for. Paste a product URL and it picks the angle, writes the spoken hook, casts a creator who reads as a real person filming on a phone, and returns native 9:16 ads with the captions already burned in, several distinct variations per pass. Far narrower than either of these by design, in exchange for ads you can upload the same afternoon.