HappyHorse 1.1 Image-to-Video is priced per second of output: 9 credits per second at 720p and about 11.6 credits per second at 1080p, so a 5-second clip costs 45 credits ($2.25) at 720p or 58 credits ($2.90) at 1080p, and the maximum 15-second clip costs 135 credits ($6.75) or 173 credits ($8.65). Durations are selectable at every whole second from 4 to 15, which means the price scales smoothly rather than jumping between fixed presets. Dollar figures here convert at the Lite plan rate of $0.05 per credit.

The full duration and resolution table

Because HappyHorse 1.1 bills by the second, the price grid is long but entirely predictable. Every whole-second duration is available, and both resolutions are offered at each one.

Duration	720p credits	720p cost	1080p credits	1080p cost
4 seconds	36	$1.80	47	$2.35
5 seconds	45	$2.25	58	$2.90
6 seconds	54	$2.70	70	$3.50
7 seconds	63	$3.15	81	$4.05
8 seconds	72	$3.60	93	$4.65
9 seconds	81	$4.05	104	$5.20
10 seconds	90	$4.50	116	$5.80
11 seconds	99	$4.95	127	$6.35
12 seconds	108	$5.40	139	$6.95
13 seconds	117	$5.85	150	$7.50
14 seconds	126	$6.30	162	$8.10
15 seconds	135	$6.75	173	$8.65

The 720p column is exactly linear at 9 credits per second, so there is no volume discount for choosing a longer clip and no penalty either. The 1080p column works out to roughly 11.55 credits per second after rounding, which makes the high-resolution premium about 28% — notably gentler than models that double their rate at 1080p.

Second-level duration control is the real cost lever

Most video models make you pick from two or three fixed durations, which means you routinely pay for seconds you will trim out in the edit. HappyHorse 1.1 does not. If the motion you want resolves in 7 seconds, you pay 63 credits at 720p instead of rounding up to 10 seconds and 90. Across a batch of twenty clips that is 540 credits — $27 at the Lite rate — saved by simply asking for what you need.

The practical rule: decide your edit length before you generate, not after. If a clip is going into a cut at 6 seconds, render 6 seconds. The only reason to render longer is to give yourself trim handles on either side of the action, and two extra seconds at 720p costs 18 credits.

Version 1.1 is materially cheaper than 1.0

The original HappyHorse image animator is still in the catalog, and the pricing difference between the generations is worth knowing before you pick one from the model list.

Setting	HappyHorse 1.0	HappyHorse 1.1	You save
720p, 5 seconds	58 credits	45 credits	22%
720p, 10 seconds	115 credits	90 credits	22%
1080p, 5 seconds	99 credits	58 credits	41%
1080p, 10 seconds	197 credits	116 credits	41%
1080p, 15 seconds	295 credits	173 credits	41%

The two generations share an identical spec envelope for image-to-video — 4 to 15 seconds at one-second granularity, 720p or 1080p, both rated 4.8 in the catalog with MODERATE content filtering. There is no capability you give up by choosing the newer version, and at 1080p you pay roughly 40% less for it. Unless you have a prompt library tuned specifically against HappyHorse Image-to-Video 1.0, the 1.1 model is the default.

What each plan buys

The credit figures above are fixed, but the dollars behind them depend on which plan on the pricing page you bought your credits through. A 10-second 720p clip, priced at 90 credits, works out very differently across tiers.

Plan	Price	Credits	$/credit	Cost of a 10s 720p clip
Starter pack	$2.49 one-time	75	$0.033	$2.99
Lite monthly	$15	300	$0.050	$4.50
Lite annual	$10/mo	300	$0.033	$3.00
Pro 2,000 monthly	$59	2,000	$0.030	$2.66
Pro 2,000 annual	$49/mo	2,000	$0.025	$2.21

Two planning notes. A Lite month of 300 credits covers three 10-second 720p clips, or eight 4-second ones — HappyHorse is a premium per-second model, not a volume workhorse, and a heavy schedule points at a Pro tier. And the 10 free credits every new account gets will not cover a HappyHorse render, whose floor is 36 credits; spend those on cheaper catalog models while you learn the interface, then top up when you have a shot worth animating at this quality.

Where the credits actually go wrong

The expensive mistake on an image-to-video model is not choosing 1080p — it is animating a still that was never going to work. HappyHorse 1.1 Image-to-Video takes your upload as the literal opening frame and inherits its framing, so there is no aspect-ratio control on this variant; the clip comes out shaped like your source. If you need ultrawide 21:9, 9:21 or the 4:5 and 5:4 feed ratios, that is HappyHorse Reference-to-Video 1.1 territory, which prices off the identical per-second matrix.

So fix the still first. Generate or crop it to the shape you need in image generation, then take it to the image-to-video tab, where the exact credit cost of your current duration and resolution is shown before you confirm. Prototype the motion at 4 seconds and 720p for 36 credits, and only rerun at 12 or 15 seconds at 1080p once the movement reads correctly. If your source photo shows a real person, you must have that person’s consent to animate it.

Frequently asked questions

How much does a HappyHorse 1.1 Image-to-Video clip cost?

From 36 credits for the 4-second minimum at 720p up to 173 credits for 15 seconds at 1080p. At the Lite rate of $0.05 per credit that is $1.80 to $8.65 per clip, and less on Pro or annual billing.

Is 1080p worth the extra credits on this model?

The 1080p premium is about 28% — 11.6 credits per second against 9 at 720p — which is modest for a resolution doubling. Draft at 720p, deliver at 1080p.

Does a longer clip cost proportionally more?

Yes. Pricing is strictly per second with no discount for length, so 10 seconds costs exactly 2.5 times what 4 seconds costs. The upside is that you can request any whole second from 4 to 15 and pay only for it.

Should I use HappyHorse 1.0 or 1.1?

1.1, in almost every case. Same durations, same resolutions, same 4.8 rating and same MODERATE filtering, at 22% less cost at 720p and 41% less at 1080p.

Can I choose the aspect ratio?

Not on the image-to-video variant — the output follows your source image. The text-to-video and reference-to-video variants of HappyHorse 1.1 offer nine aspect ratios, including 21:9 and 9:21, at the same per-second credit rates.

HappyHorse 1.1 Image-to-Video Pricing: Per-Second Credit Costs From 4 to 15 Seconds