AI video credits vs pay-as-you-go (what a second actually costs)

The short answer

A credit is a prepaid token. Pay-as-you-go is a dollar per second on the lab that bills the clip. lotgen sells neither as the clip. Dated 2026-09-21.

1. A credit is not a dollar. Kling’s website app spends credits. Official Credits Policy peg: $1 USD = 66 credits. Membership grants expire in a month. The generate chip is the source of truth for how many credits that take burns. There is no public credits-per-second table for the app.
2. Pay-as-you-go is a published dollar row. Kling’s developer API: 1 video Unit = $0.14. Google Veo: per second on Gemini (audio default) and per count on Vertex (silent and with-audio). fal prints dollars per second on the model page. Failed takes often do not bill. Unused prepaid grant often does.
3. lotgen sells the studio, not a third meter. The pricing page says it in four words: “Two prices. No credits.” You pay Google, BytePlus ARK, and Kling for seconds, at their list rate, on your own keys. You pay lotgen for the seat. There is nothing in between: no packs, no units, no percentage on your keys.

One conversion, a crosswalk rather than an in-app chip: a 10-second Kling 3.0 take at 1080p with native audio is 12 Units = $1.68 on the API. At $1 = 66 credits, that is 110.88 credits of purchased-credit dollars. The full Kling grid lives on Kling AI pricing explained. Do not treat 110.88 as what the app’s chip will show.

What “AI video credits vs pay per use” means here

On this page, “AI video credits vs pay per use” is two bills, not one slogan.

The lab’s bill is the clip. It arrives as credits in an app, as Units on a developer invoice, or as dollars per second on Gemini, Vertex, fal, or another key. Same model family can still be two meters. Kling’s website app and Kling’s video API share a name and not a spreadsheet. Veo’s Gemini table and Veo’s Vertex table do not print the same silent column.

The studio’s bill is the place you plan the lot, quote the take, compare, review, and export. That is a seat, and the pricing page is where it is sold.

Search uses “pay per use” for both of those lab meters, and sometimes for a reseller that sells credits on top of the labs. Those are not the same invoice:

• Prepaid credits. You buy a grant. The UI deducts tokens. Unused membership credits expire. Kling: membership credits valid 1 month from distribution; purchased credits valid 2 years; trial credits 7 days. Official Credits Policy.
• Pay-as-you-go on the lab. You hold a key. The lab publishes a dollar row. You pay if the take succeeds. Kling developer API, Gemini Veo, Vertex Veo, fal model pages.
• A studio on top of your keys. You still pay the lab. You also pay a seat so the quote, the cap, and the review live in one graph. lotgen does not resell the second and does not sell a lotgen credit pack.

Twelve generation keys lotgen.ai pastes: Google, BytePlus ARK, fal, evolink, Kling, OpenAI, MiniMax, Black Forest Labs, Alibaba, ElevenLabs, xAI and Runway. Luma and Sora are models on fal or evolink, not keys. BytePlus ARK is the console that issues the Seedance key, not the parent company. The invitation form says “thirteen platforms” because it also lists Anthropic, which is text only. The twelve keys above are the ones that render, the same list how much AI video generation costs prices.

Creators usually meet the credit UI first. Agencies meet a client invoice that has to name a dollar. Technical buyers meet an API unit price and a credit pack on the same brand’s marketing site. The argument is the same: convert the token to a dollar before you compare anything else.

How a credit pack hides the dollar

Kling is the worked example because it sells both meters under one brand. The full grid, plan by plan, is on Kling pricing explained. This section shows one conversion.

Read on 2026-09-21 from Kling’s English membership list and from kling.ai/dev/pricing. The list price is the renewal price, not the cheaper first-cycle offer.

How to read this: the full notes on first-cycle prices, renewal prices, yearly plans, Team and purchased packs are on Kling pricing explained. First-cycle prices shown the same day were cheaper (Standard $6.99, Pro $25.99, Premier $64.99, Ultra $127.99). Those are not the list price. Unused membership credits still expire. Higher plans are cheaper per credit only if the grant is used.

The hide, in one conversion. Kling does not publish a public credits-per-second table for the app. The Credits Policy is explicit: consumption is “subject to the display of the relevant interface at that time.” The public per-second meter is the developer API.

• Video API: 1 Unit = $0.14 (list). Image API on the same page uses 1 Unit = $0.0035. Same word, different dollar. Do not convert video with the image unit.
• Kling 3.0, 1080p, native audio: 1.2 Units /s = $0.168 /s.
• Official purchase peg: $1 USD = 66 credits. That is exactly Standard list ($10.00 / 660) and the no-bonus top-up packs.

The crosswalk, from those two official pegs (it is not the in-app chip):

$1 purchased credits = 66 credits
1 video API Unit     = $0.14
1 Unit               ≈ 9.24 purchased credits ($0.14 × 66)

A 10-second Kling 3.0 clip at 1080p with native audio:

1.2 Units/s × 10 s = 12 Units
12 × $0.14         = $1.68   (API list)
12 × 9.24          = 110.88 credits  (if the app burned the same dollars)

If the in-app chip shows a different credit count, trust the chip and keep the formula. A blog’s “Kling is 20 credits” figure is not on Kling’s public pages, so keep it out of your math.

Pro row: $37.00 / 3,000 = $0.012333 per credit × 110.88 = $1.37. Ultra list would print a cheaper second, and it is only cheaper if you actually burn 26,000 credits before the 31-day TTL. A cheap per-credit rate with a prepaid grant you do not burn is more expensive than a dearer pay-per-success API.

Four things the pack hides that the dollar row does not:

1. Expiry, not rollover. Membership credits last 1 month. Kling’s membership list on 2026-09-21 gives the grant a 31-day life. Purchased credits last 2 years. API resource packs: unused balance does not carry over, in Kling’s own words on the developer pricing page.
2. The chip is the meter. Until you read it, you do not know what a second costs in the app. The API row is public.
3. Credits are not membership. Credits Policy: credits cannot be exchanged for a membership. 1080p, watermark removal, fast-track, Master shot, and extension are named as premium-only. A pile of credits in a Basic account is not the Pro generate path.
4. Retries bill. Failed generations return credits in the app and do not deduct Units on the video API, in Kling’s own words. A take that succeeds and is unusable still costs the full clip. Usable-shot math, clip dollars times attempts, is on how much AI video generation costs and in the calculator.

The pricing page keeps a dated checkout comparison against one credit-pack vendor (Higgsfield, observed 20 August 2026, $0.080 per credit at the till). Kling is the lab that sells both meters. Higgsfield is a reseller pack on top of the labs.

What pay-as-you-go looks like on the labs

Pay-as-you-go, on the labs, is a published dollar per second (or per Unit, or per count). You hold a key. You pay the row you actually called. You do not pre-buy a grant that expires.

Veo is the clean PAYG example because it does not sell credits. It sells seconds, in three named tiers, on two Google checkouts that do not print the same table. The full grid is on Veo 3 cost per second.

Gemini API, paid tier, “video with audio price (default)”, as read on 2026-09-18. Vertex, read on 2026-09-21, prints the same with-audio cells as $X / 1 count. Label the checkout.

Vertex / Gemini Enterprise prints the same with-audio dollars as $X / 1 count, and a silent column the Gemini page does not have. Read on 2026-09-21 from Vertex generative AI pricing, which now redirects to the Gemini Enterprise Agent Platform pricing page:

If one blog says Veo is $0.20 a second and another says $0.40 a second, they may both be quoting Google: one silent on Vertex, one with audio on Gemini. Label the checkout. A Gemini key and a Vertex key are not interchangeable credit piles.

An 8-second Veo 3.1 take at 720p, Gemini audio default: Lite $0.40, Fast $0.80, Standard $3.20. Veo 3.1 predict accepts 4, 6, or 8 seconds, not 10. Ask for 10 seconds and you do not get a 10-second invoice. You get a refusal, then you generate 8 (or two clips). Eight-second Kling vs Veo dollars are on Kling vs Veo cost.

Kling PAYG is Units, not credits. Read the same day on kling.ai/dev/pricing: Video API 1 Unit = $0.14. Kling 3.0 720p no audio 0.6 Units ($0.084 /s); 720p native audio 0.9 Units ($0.126 /s); 1080p native audio 1.2 Units ($0.168 /s). Native audio is a separate rate row at 720p and 1080p, not a multiplier you apply after the fact. 4K is a flat $0.42 /s either way.

fal is a marketplace key, not Google’s price and not Kling’s. fal’s Kling Video v3 Standard page on 2026-09-21: $0.084 /s audio off, $0.126 /s audio on. That matches Kling’s own 720p rates on that day. Coincidence, not a promise that 1080p or 4K match. fal’s Veo 3.1 Fast with audio is $0.15 /s (the fal aside on Veo 3 cost per second), against Gemini Fast $0.10 / $0.12. fal is the invoice you hold if that is the key you pasted. It is not Google’s list. Luma and Sora stay models on fal or evolink.

The other ten keys sit on How much AI video generation costs: BytePlus ARK tokens, MiniMax PAYG Hailuo dollars, Black Forest Labs at $0.01 / credit, Alibaba Wan 2.7 International per second, Runway Dev credits, xAI per second by resolution. Put your own spec into the AI video cost calculator to price all twelve at once.

Same second, two invoices

The second the lab bills is one line. The studio that quotes it, caps it, and puts a review link on it is another.

The pricing page puts it in four words, “Two prices. No credits.”, and then: “You pay Google, BytePlus ARK and Kling for seconds, at their list rate, on your own keys. You pay us for the studio. There is nothing in between: no packs, no units, no percentage on your keys.”

MCP is on every plan. The Solo card says: “Claude over MCP, the same price as the UI.”

The quote in the product is a dollar, not a token. On Developers, the same render route with dry_run: true returns total_usd and cap. The pricing page’s illustration is a 5-second Kling 3.0 take at 1080p at $0.56 on the button before you press it. That figure is the catalog rate the product bills against, not a run made for this page.

Caps sit per workspace and per lot. The workspace cap is the month’s total. The lot cap is one project’s own budget. Either can refuse, and the refusal names which one did. A queued render counts against the cap immediately. Unpriced models refuse under a cap rather than walking through as $0.00. The pricing page still shows Wan 2.7 1080p as unpriced. Believe the button. Usable-shot math (clip dollars × attempts) is in the calculator and on how much AI video generation costs.

The pricing page’s own worked example, “A month on one seat”, prints 41 takes, to the labs $63.20, lotgen $99.00, total $162.20. Two invoices. The labs’ $63.20 would have been a credit grant in an app, with a leftover that expired. Here it is seconds that billed, and a seat that did not hold a balance of yours.

There is no lotgen credit pack. There is no conversion table from “lotgen credits” to Kling Units. If a page invents one, it is not this product.

When a credit pack still makes sense

A credit pack is the right meter when you live in one lab’s UI and never leave.

Stay on Kling credits (or Runway credits, or whoever’s grant) when all of these are true:

1. One lab, one app. You generate, review, and export inside that website. You do not need Veo on Tuesday and Kling on Wednesday. Switching labs would mean a second login and a second prepaid pile.
2. You burn the grant. Pro’s cheaper per-credit rate only exists if 3,000 credits actually leave the balance before the 31-day TTL. A $37 pile you half-use is a $37 pile.
3. You want the membership gate, not just the tokens. Kling: 1080p, watermark removal, fast-track, extension. Credits Policy says credits alone do not unlock those. The subscription does.
4. Nobody has to see a dollar on an invoice. You are posting the output yourself. You are not billing a client per take, and you are not running an agent that needs total_usd in a tool response.
5. Volume is small enough that a key is overhead. Pasting a Kling API key, a Google key, and a cap is more machinery than a $10 Standard grant you will finish this week.

The pack stops making sense when any of these show up: a second lab, a client who asks what a second cost, an agent loop, a leftover grant you forfeit, or a blog that quoted Units as if they were app credits. Then convert once, using the lab’s own peg, and keep the dollar.

lotgen is the second case. It is a bad fit for the first. Do not buy a Solo seat to replace a $10 Kling grant you will finish inside Kling’s UI.

Request access

lotgen.ai is an invite-only beta. The door is the invitation form:

Request an invitationSeats and pricing

Pick Creator (“You post the output yourself.”) if that is who you are. If one of the asides above was yours, pick that tile instead:

• Agency or studio (“You make them for clients, and they have to approve.”).
• Brand or in-house team (“You make ads for your own product.”).
• Developer or agent builder (“You want the API or MCP more than the studio.”).

The form does not create an account and it charges nothing. A person reads it. The providers you already pay for is the part that shapes the answer. If it is a fit, the invitation arrives by email and creates the workspace when you accept it.

Or start today: Solo is $99 a month and checkout creates the workspace. Same graph, same keys, no queue. Seats and pricing. What a second costs across the twelve keys: How much AI video generation costs. Your own spec: AI video cost calculator.

Related: One API across your keys is the product page for the graph, and Generate AI video from Claude Code is the MCP how-to.

Prices checked on 2026-09-21: how to re-check yourself

1. Kling membership list: GET https://kling.ai/api/store/package/v3/memberships-by-duration. List is originalPrice, not the cheaper FIRST row. Credits Policy peg: kling.ai/docs/point-policy ($1 USD = 66 Credits).
2. Kling video API: kling.ai/dev/pricing. Confirm 1 Unit = $0.14 and do not mix the image unit ($0.0035).
3. Veo: Gemini API pricing (audio default, per second) and Vertex / Gemini Enterprise pricing (silent vs with-audio, $X / 1 count). Label the checkout.
4. fal marketplace: the model page for the key you actually hold. Coincidence with Kling 720p is not a 1080p promise.
5. lotgen seats: Seats and pricing (“Two prices. No credits.” Solo $99, Team $90 from 3, $79 from 6). Partner $149 on Developers.
6. Your own spec: AI video cost calculator. Every key’s rate: How much AI video generation costs.

Related: Kling vs Veo cost, Kling pricing explained, Veo 3 cost per second, One API across your keys, Generate AI video from Claude Code, How to compare AI video takes, Developers.

Request an invitationSeats and pricingSee the dollar, not the token.

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