The Real Cost of AI Video Editing Tools in 2026

The monthly price on an AI video tool's pricing page is not what you're actually paying for. Credits are. Every tool in this post runs on some version of a credit system, and the number of credits your subscription buys tells you almost nothing until you know what one generation actually costs. We checked four tools with genuinely different credit economics: Runway ML, HeyGen, Opus Clip, and InVideo AI, to see what a subscription actually gets you once the credits start getting spent.

Pricing and credit costs below were verified directly from each company's own pricing and help pages on August 12, 2026. Credit costs, model access, and monthly allowances change on these platforms more often than flat-fee subscriptions, treat this as a snapshot.

Runway ML: the most transparent credit math, and it's still tight

Runway publishes exactly what each model costs, and it's not just one number. Gen-4.5 runs 12 credits per second of video, Aleph 2.0 runs 28 credits per second, and Seedance 2.0 Pro runs 40 credits per second, three models on the same plan, three very different burn rates. Do the math on the cheapest paid plan and it's not much. Standard costs $12/month billed annually and includes 625 credits, which Runway's own pricing page states plainly is enough for about 52 seconds of Gen-4.5 video, or 104 seconds on the faster, lower-quality Gen-4 Turbo model. Pro, at $28/month annually, bumps that to 2,250 credits, roughly 187 seconds. Credits on Standard and Pro don't roll over between billing cycles either, they reset within 24 hours of your billing date, so unused credits are gone, not banked.

That per-model spread is also where we got caught out ourselves. The first month we used Runway, we subscribed and just started generating images and video without checking which model we were using, treating the monthly credit pool like it'd stretch evenly across a full month. It didn't. Between the pricier video models and a run of image generations, the entire month's credits were gone in a single day. That's not a billing trick on Runway's part, their per-model pricing is right there on the page, it's just how these tools actually work: check what a specific model costs before generating, not just what the plan costs.

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HeyGen: transparent per-minute cost, but the premium engine burns fast

HeyGen publishes its credit costs per minute directly: the standard Avatar III engine costs 3 credits per minute, while the more realistic Avatar IV/V engine costs 20 credits per minute, over 6x more. On the Creator plan ($29/month), 600 monthly credits works out to roughly 200 minutes of Avatar III video, or only about 30 minutes if you're using the premium Avatar IV engine that most people actually want for a polished result. Pro ($49/month, 1,000 credits) stretches that to about 50 minutes on the premium engine. The credit cost is transparent, it's just easy to underestimate how quickly the good-looking avatar option eats a monthly allowance.

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Opus Clip: the free tier's real cost is losing your own clips

Opus Clip's free tier gives you 60 credits a month, but two details matter more than the credit count: free exports carry a watermark, and per Opus Clip's own pricing page, clips stop being exportable after 3 days if you haven't downloaded them. That's a different kind of hidden cost than a credit shortage, it's a deadline on content you already generated. The Starter plan ($15/month, 150 credits) removes the watermark. Pro ($29/month, or $14.50/month billed annually) adds export to Adobe Premiere Pro and DaVinci Resolve, AI B-roll, and video dubbing on top of a larger annual credit pool. We've named Opus Clip before, both as one of the AI clipping tools behind auto-generating viral shorts and as a way to automate part of the 10-pieces-from-one-video breakdown, the credit and export limits above are worth knowing before you build a workflow around it.

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InVideo AI: the one tool that won't tell you the real cost upfront

This is the tool where "real cost" is hardest to pin down before you pay. InVideo AI's help documentation shows credit-cost examples for image generation, but nowhere on the pricing page, the models page, or the individual model pages we checked (including its Google Veo 3.1 page) does InVideo publish a flat credit-per-second or credit-per-minute rate for video generation. Per InVideo's own help center, the cost "depends on the model, the output length, and the resolution," and you only see the exact credit cost "before you confirm each generation," meaning inside the app, after you've already subscribed. The Plus plan starts at $20/month for 75 credits, but there's no way to calculate from the pricing page alone how many actual videos that gets you.

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Which one actually fits your use case

The credit math matters less than whether the tool does the job you need in the first place. Runway ML is built for cinematic B-roll and standalone shots, useful when you need footage that doesn't exist yet rather than editing footage you already have. HeyGen is for talking-head or avatar-led content, product explainers, localized versions of a video, training content, where a presenter on screen matters more than cinematic camera work. Opus Clip is a clipping and repurposing tool, not a generator, it's built to turn footage you already have into shorts, not create new footage. InVideo AI tries to cover all of the above in one platform, which is also why its credit cost is the hardest of the four to predict, a generalist tool pulling from 200+ models doesn't have one simple rate.

How to actually estimate your real cost before signing up

Three of these four tools will tell you their real cost if you know where to look. Runway and HeyGen publish per-generation credit costs directly, so you can do the math yourself: credits per month divided by credits per output equals your real monthly capacity, but check that math per model, not just per plan, since a single tool can have models that cost 6x or more of each other per second. Opus Clip's real cost shows up in what the free tier takes away (the watermark, the 3-day export window) rather than in a credit calculation. InVideo AI is the outlier, its credit cost for the thing most people are actually there for, AI video generation, isn't published anywhere public. If a tool doesn't publish its per-generation credit cost, the only way to find your real number is to sign up, generate something, and check what it actually cost you, which is a worse way to find out than reading a pricing page.

We covered a related side of this in free vs paid AI video editors: traditional editors like CapCut and Premiere gate features behind a flat subscription. These four tools gate output volume behind a credit meter instead, which is a different kind of cost to plan around, and one that's easy to underestimate if you only look at the sticker price.

FAQ

Why do AI video tools use credits instead of flat pricing? Because the underlying video-generation models have real, variable compute costs per generation depending on length, resolution, and which AI model is used. A credit system lets these companies pass that variable cost through, rather than eating it on a flat monthly fee.

Which tool gives the most video for the money? Based on the credit math above, Runway's Standard plan works out to roughly 52 seconds of top-tier video for $12/month, while HeyGen's Creator plan gets you about 30 minutes of premium avatar video for $29/month, a very different kind of output. Which one is "worth it" depends on whether you need cinematic video generation or avatar-led talking content.

Does InVideo AI publish how many credits a video costs? Not for video generation specifically. InVideo's own help documentation says the cost "depends on the model, the output length, and the resolution," and the exact credit cost only appears at the moment you generate, inside the app. Pricing-page examples only cover image generation costs.

Do unused credits roll over to the next month? It varies by tool. Runway's Standard and Pro plans reset credits within 24 hours of your billing date, with no rollover. Runway's Max plan rolls over up to one month of unused credits. HeyGen rolls over one month for monthly subscribers and accumulates credits until renewal for annual subscribers. Always check the specific tool's current policy before assuming.

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Credits, watermarks, and export deadlines are exactly the kind of fine print that's easy to miss when you're comparing sticker prices. Tell us what you're trying to produce and how often, and we'll tell you which of these tools actually pencils out for that volume, and where a flat-rate editor beats a credit meter entirely. Book a call, or see how we actually use these tools ourselves first.