Correction, 2026-10-02: the Kling section said Kling gives free users daily credits. Kling's credits policy describes daily login credits as an event offer for subscribers, so a free account has no allowance to plan around; the section now says so and shows what the Standard membership buys, including that its $6.99 price is for the first month and the plan renews at $8.80. We also called 8frame's credits "non-expiring": subscription credits roll over while your plan is active, and the page now says exactly that. Every outside figure was re-checked on its source today.
Correction, 2026-10-01: an earlier version of this page said Kling's free tier gives 66 credits a day (Kling publishes no daily figure), described a Kling API credit split we could not source, put Runway's entry tier at 125 seconds of Gen-4 Turbo (Runway's own pricing page says 104), and advised upscaling finished clips with Topaz or Clarity on 8frame (both are image upscalers; 8frame has no video upscaler). Failed generations on 8frame are refunded, not charged. Every outside figure now carries its source and date.
An AI video credit is a prepaid token that a platform deducts when you generate a clip, with the deduction scaled by the length, resolution, and model tier you asked for. Credits are an abstraction layer sitting on top of real compute cost. The platform buys GPU time, then resells it to you in round-number bundles so the pricing feels simple. The problem is that the abstraction hides the thing you actually care about: how many finished clips you get before the meter runs out.
The reason this matters is that credit math is deliberately hard to eyeball. A plan that advertises "1,000 credits a month" tells you nothing until you know what a single generation costs in that system, and that number changes with every resolution bump and model swap. This guide breaks down how three real credit systems price a clip, where credits quietly expire, and when you're better off paying per clip instead.
How credits map to a clip
Every credit system ties the deduction to three variables: duration, resolution, and which model or quality preset you pick. A higher tier of any of the three costs more credits, and the relationship is rarely linear. In Google's Veo 3.1 API, 4K costs one and a half times the 1080p rate on the Standard model ($0.60 against $0.40 a second). Model tier moves the price most: on 8frame an 8-second Veo 3.1 Standard clip with sound is 448 credits and the same clip on Veo 3.1 Lite is 54, more than eight times less.
Here is how three systems price generation, from their own pages, checked on the dates in the Sources section.
Runway
Runway runs on a monthly credit allowance. In its API, Gen-4 Turbo costs 5 credits per second and Gen-4.5 costs 12, so a 10-second Gen-4.5 clip is 120 credits, at $0.01 a credit. Plan credits do not roll over on Standard or Pro; Max rolls unused credits over for one month.
The practical translation: Runway's Standard plan ($15 a month, $12 billed annually) includes 625 credits, which its pricing page equates to 104 seconds of Gen-4 Turbo or 52 seconds of Gen-4.5. That is ten finished 5-second Gen-4.5 clips before you top up, and fewer once you count the drafts that don't make the cut.
Kling
Kling's free Basic plan is listed as "$0; free forever" with "No monthly Credits", and free generations carry a watermark. Kling's credits policy treats daily login credits as an event offer for subscribers ("During the event (as shown in the interface), Kling subscribers can claim daily credits upon login/refresh"), with amounts "subject to platform announcement", so a free account has no allowance you can plan a workload around. Paid memberships add a monthly credit pool and remove the watermark. The Standard membership lists 660 credits a month, which Kling equates to 33 720p videos, at $6.99 for the first month: Kling marks that as a first-subscription discount, and the plan renews at $8.80 a month. Membership credits are "valid for 1 month from the date of distribution".
Google Flow
Flow, Google's creator front-end for Veo, prices per generation rather than per second. Per Google's Flow credits help page, a Veo 3.1 Lite generation costs 10 credits, Fast 20 and Quality 100 (Ultra subscribers pay half on Lite and Fast). Google AI Pro adds 1,000 Flow credits a month: 10 Quality videos, 50 Fast or 100 Lite. The same page says everyone gets 50 Flow credits a day to try it, though another Flow help page says a subscription is required; Google's pages disagree, so check before you plan on free use.
The pattern across all three: the sticker number on the plan is meaningless until you divide it by the cost of the generation you'll actually run. Run the division before you subscribe, not after.
The expiry trap
Credits are not money, and platforms design them so you can't treat them like money. Two mechanics do most of the damage.
Monthly reset with no rollover. Runway's Standard and Pro credits reset each month and unused credits vanish; Google says Flow's monthly subscription credits do not roll over either. If you have a slow month, you paid for compute you never used. If you have a heavy month, you run out mid-project and either top up at a worse marginal rate or wait for the reset. Neither outcome is in your favor, which is the point.
Daily allowances that don't bank. Flow's 50 daily credits do not roll over, per Google: "If you don't use the full 50 Google Flow credits in a day, the unused Google Flow credits don't roll over." You cannot save a week of free credits for one ambitious Saturday. A daily allowance forces a slow drip rather than a usable batch.
The net effect is a subtle tax on irregular workflows. Most brand and agency work is irregular by nature: a burst around a campaign launch, quiet weeks in between. Credit systems are optimized for steady daily users and penalize everyone else. If your generation load spikes and dips, you are paying for the shape of your calendar as much as the compute.
Credits vs per-clip pricing
The real dividing line isn't credits versus no credits. It's whether the unit you bought expires, and whether one pool covers every model you use. The 8frame canvas runs on credits too, but with the two damage mechanics above removed: subscription credits roll over from month to month while your plan is active, and top-up packs add credits when a heavy month needs them. Each clip has a transparent credit price tied to the model, so the pool maps to a clip count you can plan around.
The canon credit costs are readable at a glance. Veo 3.1 runs 448 credits per 8-second clip with audio (224 silent), with Veo 3.1 Fast at 168 and Veo 3.1 Lite at 54, the cheapest Veo tier. Kling 2.6 Pro runs 95 with audio and 47 silent, Wan 2.5 runs 102, Wan 2.2 runs 50, Hailuo H3 runs 88, and Seedance 2.0 runs 108. On the $19/month Starter plan's 1,000 credits, that's about 21 silent Kling clips or 20 Wan 2.2 clips; at the $10-per-1,000 top-up rate a credit is roughly a cent. For a fuller breakdown of what AI video actually costs across the market, see how much does AI video cost in 2026 and the pay-as-you-go versus subscription math.
Rollover credits win when your load is uneven, when you route work across several models, or when you want the invoice to match the work. Expiring allowances can win only when you generate a large, steady volume on a single tool every day and the bundle discount beats the marginal rate. Most brand teams are in the first camp, not the second.
The waste-reduction checklist
Whichever system you're on, most wasted credits come from generating expensive footage before the idea is validated. This sequence keeps the spend on the clips that ship.
- Draft at the lowest resolution the model offers. Composition, timing, and motion read fine at 480p or 720p. On 8frame, Wan 3.0 is 24 credits for 5 seconds at 480p and 95 at 1080p; lock the shot cheap before you pay for the top resolution.
- Draft on a cheap model, finish on the expensive one. Block the sequence on Veo 3.1 Lite (from 17 credits for a silent 4-second clip), Wan 3.0 at 480p, or silent Kling to confirm the concept works, then regenerate only the winners on full Veo 3.1. Generating every variant on your most expensive model is the single most common way credits disappear.
- Batch your prompt revisions. Every finished generation you throw away still costs credits (on 8frame a failed one is refunded automatically, see do failed AI generations cost credits). Write and pressure-test the prompt before you spend on it. A prompt guide pays for itself in avoided regenerations.
- Choose the delivery resolution before the final run. 8frame has no video upscaler (Topaz, Clarity and BRIA there work on images), so the resolution you generate at is the resolution you deliver. Regenerate only the approved shot at delivery resolution; if you upscale video elsewhere, do it on the winner, not on every draft. Which model delivers what is in AI video resolution by model.
- Kill the queue-and-forget habit. Credits spent on generations you never review are pure waste. Only generate what you'll actually watch and judge.
The theme across all five: spend credits at the resolution and model tier that matches the decision you're making. Cheap output for exploration, expensive output only for delivery.
What this means for brand teams
If you're running AI video at any real volume, the credit abstraction is working against your finance team as much as your creative one. Unpredictable burn rates and expiring allowances make forecasting harder than the compute itself justifies. The move that consolidates the problem is separating the two decisions credits force you to bundle: how much you commit up front, and how much any single clip costs.
Rollover credits decouple them. You pick a plan sized to the volume you actually run, unused credits roll over while you stay subscribed instead of vanishing at the reset, and each clip's credit price is knowable before you generate it. For a team routing briefs across four models a week, one pool that covers all of them is worth more than any single-tool bundle discount. For a solo creator generating on the same tool every day, a per-tool bundle can tip the other way, and that's a real trade to weigh, not a marketing line.
FAQ
How many AI videos do 1,000 credits make? It depends on the system. On 8frame, 1,000 credits are 2 Veo 3.1 Standard clips with sound (448 each), 18 on Veo 3.1 Lite (54), 21 silent Kling 2.6 Pro clips (47) or 41 Wan 3.0 clips at 480p (24). In Google Flow, 1,000 credits are 10 Veo 3.1 Quality generations or 100 Lite.
Do AI video credits expire? Runway's Standard and Pro plan credits reset monthly (Max rolls over one month), Kling's membership credits are valid for one month from the date they are issued, and Google says Flow's monthly and daily credits do not roll over. On 8frame, subscription credits roll over while your plan is active.
Does a failed generation cost credits? On 8frame, no: the credits return to your balance automatically. A finished generation you dislike is not a failure and is not refunded.
Sources
- Runway API credit rates: docs.dev.runwayml.com/guides/pricing, checked 2026-10-02
- Runway plans, seconds per plan and rollover: runwayml.com/pricing, checked 2026-10-02
- Kling free plan, Standard membership credits, first-subscription price and renewal price: Kling 3.0 credit cost guide, checked 2026-10-02
- Kling daily login credits (an event offer for subscribers) and membership-credit validity: kling.ai/docs/point-policy, checked 2026-10-02
- Kling free-tier watermark: kling.ai/feature/ai-video-generator, checked 2026-10-02
- Google Flow credits per generation, Pro allowance, daily credits and rollover: Manage your Google Flow credits, checked 2026-10-02
- Google Flow eligibility (a Google AI Plus, Pro or Ultra subscription required): Google Flow help, 16353333, checked 2026-10-02
- Veo 3.1 API rates by resolution: ai.google.dev/gemini-api/docs/pricing, checked 2026-10-02
- 8frame plans, top-up packs, rollover while subscribed and credit prices: live plan catalog and tool registry cost functions, read 2026-10-02; refunds of failed generations: tool registry and production data, read 2026-09-30
Buy credits that roll over while you stay subscribed and spend them across every model on one canvas. See the 8frame plans, from $19/month for 1,000 rollover credits, and run the division before you subscribe anywhere.
Try it without signing up: the 8frame canvas opens on a real board. The canvas is free and unlimited; generation is paid from $19/month.