AI Video Generator Cost Comparison: The Honest Pricing Math

TL;DR: Most AI video tools sell you a flat monthly plan and then quietly meter what you can actually make, by AI minutes, by video count, or by credits. Keyvello is credit-based too, but the credits map to length and quality so the cost of a specific video is knowable before you click. This page lays the real numbers side by side: Keyvello's per-video credit costs against the monthly plans of Revid.ai, InVideo, Pictory and Synthesia, including what each plan includes and where the cheap sticker hides a low cap. Pricing for every competitor was checked against their public pages in May 2026, with source links; where a number was not clearly stated, the cell says "check site" rather than a guess.

One thing to settle first, because it changes the math: "cost" is not the headline price, it is price divided by the videos you will actually publish. So this comparison reports both the plan price and the metering model that decides your real cost.

Where the money goes (the 3-step flow)

Keyvello does not bill per render attempt or per timeline edit. You describe a video, choose a look, and a finished vertical short comes back. Knowing the flow matters because it is where credits are spent.

Step 1 - Describe it or paste a script

Type a prompt like "5 strange facts about the deep ocean" or drop in your own script. The AI writes the narration, splits it into scenes, and queues the visuals plus an ElevenLabs voiceover in parallel. No credits are charged for typing or previewing the idea.

Step 2 - Pick a template, which sets the price band

There are 11 templates. This screen is also the cost lever: narrated AI-image templates (like AI Stories) are the cheap path, while true AI-video motion costs several times more credits per second. You decide the spend here, not after the fact.

Step 3 - Generate, preview, then spend only to fix

Generation takes about 2 to 5 minutes. You watch the full result with real audio and captions in the browser. If one scene is wrong, you regenerate just that image for 1 credit or redo the voice for 3, instead of paying to rebuild the whole video. That granularity is a real cost saving most flat-plan tools do not offer.

See a real output before reading prices

Numbers are meaningless if the output is not usable, so judge the quality first. Below is an actual Keyvello-generated sample. Treat it as a reference for the AI output quality, not as your exact niche or a hand-polished marketing render. Watch it on a phone with sound on, the way your audience will.

If that clears your bar, the rest of this page is about paying the least to make a lot of it.

Keyvello's actual per-video cost (base quality)

Keyvello runs on credits, and the credit cost of a video is set by length, captions, and a quality multiplier, not a flat per-video fee. For narrated AI-image videos at base quality:

Length	Base credits	+ Captions
30s	10	12
60s	18	20
90s	25	27
3 min	40	42
5 min	70	72
10 min	120	122

Quality multipliers stack on top: base 1x, pro 1.5x, ultra 2.5x. So a 30s clip is 10 credits at base, 15 at pro, 25 at ultra. The expensive line item is AI video (generated motion, not still images): roughly 60 credits for 30s and about 108 credits for 60s. That gap is honest and it exists in every tool, because generated motion costs far more compute. The cheap strategy is to use AI-image templates for the bulk of your output and reserve AI-video for the few scenes that truly need motion.

A real data point on cost-per-published-video

The average video our creators actually make is about 36 seconds and costs roughly 15 credits at base quality. That number matters more than any list price, because it tells you how far a plan's credits really stretch: a monthly budget spread across many 15-credit clips is a posting habit, not one or two showcase renders. When you compare plans below, mentally divide each plan's allowance by your own typical clip, not by the longest video the tool can make.

Side-by-side: Keyvello vs the monthly-plan crowd

Below is the honest comparison. Prices were checked against each company's public pricing in May 2026 with source links. Read the "metering / what you get" column, not just the price, because that is what sets your real cost per video.

Tool	Entry paid plan	Metering / what you get	Free downloads?	Watermark
Keyvello	$19/mo (Starter)	Credit-based by length & quality; AI-image ~10cr/30s (avg clip ~15cr), AI-video ~60cr/30s; regen 1 image = 1cr	No - download needs a paid plan	No watermark on any plan, even the free preview
Revid.ai	$39/mo (Hobby / Growth)	Growth: 2,000 AI credits/mo, 100+ tools, 3 auto-workers; Ultra $199/mo = 12,000 credits	No - exports need a paid plan (~70 welcome credits free)	check site
InVideo AI	$28/mo (Plus)	Plus: ~50 AI minutes/mo, watermark-free exports; Max $50/mo ~200 min (verify on site)	Free tier exports are watermarked	Yes on free; removed on paid
Pictory	$25/mo (Starter, billed annually)	Starter: 200 video min/mo, 1080p, no watermark; Pro $35/mo = 600 min	14-day trial only, 720p	None on paid plans; trial limited to 720p
Synthesia	$29/mo (Starter)	Starter: 10 video minutes/mo, 125+ avatars, logo removal, download included	No - free is trial only	Logo removal included from Starter

What the table actually tells you: InVideo's $28 Plus plan looks cheap until you see ~50 AI minutes a month that do not roll over (invideo.io), so a heavy week eats it. Synthesia's $29 Starter buys only 10 minutes of finished video (synthesia.io) - generous per minute of avatar footage, tight for volume. Pictory's $25 Starter is genuinely good value at 200 minutes and 1080p with no watermark (pictory.ai), but its model is stock-footage assembly, not generated AI scenes. Revid's entry plans both sit at $39 (revid.ai). Keyvello starts lowest at $19 and, because the average clip is ~15 credits, the credit-by-length model is the most predictable for daily faceless shorts.

When a different tool is the better buy

No single tool wins on cost for every job, and pretending otherwise would just waste your money. If you need a realistic talking-avatar presenter for training, sales or corporate explainers, Synthesia is purpose-built for that and worth its per-minute premium. If your content is mostly stock-footage montages with voiceover rather than generated scenes, Pictory's 200 minutes for $25 is hard to beat on raw minutes. And if you want one paid plan with a very large credit pool plus an automation API and auto-posting baked in, Revid.ai's Growth tier bundles those. Keyvello is the right pick when your goal is high-volume faceless short-form at the lowest predictable cost per upload, with the option to spend up on AI-video motion only when a scene earns it.

The proof behind the price

Cost claims only matter if people are actually shipping at that price. Creators have generated more than 9,000 videos on Keyvello, including over 2,400 in the last 30 days, across a community of 6,000+ creators. That is real, ongoing volume on a value-priced plan, not a launch-week spike.

Run the numbers yourself, free

New accounts get 20 credits with no card, enough to generate and fully preview a couple of shorts and see exactly how many credits your typical video costs. Be aware of the honest catch: the free tier is preview-only, so downloading the finished MP4 requires a paid plan. There is no watermark on the preview or on any plan, so the credits you spend testing buy you the genuine output, and Starter is $19/mo when you are ready to export.