By Kevin Yi
Free credits are a sample, not a gift. Most AI cartoon tools give new accounts enough to make one short thing, and most people spend them on the most exciting prompt they can think of. Then they buy a plan based on one lucky clip.
A better use of free credits is a test: the same small job, run the same way on every tool you’re considering, with notes. This protocol takes about 30 minutes per tool. Run it on two or three tools and you’ll have a fair comparison instead of a gut feeling.
Before you start: the test kit
Prepare these once and reuse them for every tool:
- One character image. A clear, front-facing drawing or picture of a character you own, on a plain background. You’ll use it to check consistency.
- A four-scene script. About 15–20 seconds of narration, with four obvious scene changes: indoors, outdoors, close-up, a scene with a second character. Variety is what exposes drift.
- A notes file with the six headings below, and a phone timer.
- A screenshot habit. Capture every price, licence line and cost prompt with the date visible. Terms change, and your screenshot is your record.
Keep the script identical across tools. Changing the prompt between tools is the most common way to ruin a comparison.
Minutes 0–5: sign up and read the meter
Create the account and note:
- Did it ask for a card?
- How many free credits did you get, and does the dashboard show the balance clearly?
- Is there a price list for credits per action, or only for plans?
The last one matters most. You want to know what a scene costs, not what a month costs. A tool that publishes per-step costs lets you predict a real project; one that only shows plan tiers leaves you guessing.
As an example of what a good answer looks like, ToonBee AI’s credits guide lists each story-video step separately: about 0.11 credits per second of narration, 15 credits per scene picture (a redraw costs the same), ready-made music free, and 20 credits per second for each scene you animate. New accounts there get 100 free credits with no card. With numbers like those you can work out a project’s cost before you write it. Look for the same level of detail on any tool you test.
Minutes 5–10: watermark and rights
Before generating anything, find the answers to two questions in writing, on the site, not in a sales chat:
- Do free-credit exports carry a watermark? Some tools stamp free output and only remove the mark on paid plans. That’s fine for testing, but it means your free test video isn’t a usable deliverable.
- Can you use the output commercially, and does that include free credits? If you plan to monetise a channel, run ads or make videos for clients, the licence line is the most important sentence on the site.
If either answer is missing or vague, write “unclear” in your notes. Unclear counts as a no until support confirms otherwise in writing.
While you’re here, check the platform side too. If the videos will go on YouTube, read YouTube’s rules on altered or synthetic content so you know what you’ll need to disclose, whatever tool you choose.
Minutes 10–20: the consistency test
This is the real test, and the one most free trials skip. Upload your character image (or let the tool design one), paste your four-scene script and generate the scene pictures.
Spend your credits on pictures first, not motion. On most tools a still costs a fraction of an animated clip; on ToonBee AI, for example, a scene picture is 15 credits while a single 5-second clip on H3 Max Turbo at 480p is 63. Four stills tell you more about consistency than one moving shot.
Score each scene from 0 to 2:
- Face – same shape, eyes, features?
- Outfit – same clothes and colours?
- Proportions – same height and build next to the second character?
A perfect run is 24. Anything under 18 means you’ll be fixing drift on every project. Then try one fix: redraw the worst scene on its own. Note whether the tool lets you redo a single scene without regenerating everything, what it costs, and whether it keeps the old version. That single-scene redo is the feature you’ll use most in real work.
If credits allow, animate just one scene, the one with the most going on. Check whether the character stays on-model while moving, and whether the motion matches what the script says.
Minutes 20–25: the cost and failure check
Now look back at what you spent:
- Did the tool show the cost before each step? A clear “this will cost X credits” prompt before every generation is the single best protection against surprise bills.
- Did your balance match the shown costs? Add up what the prompts said and compare it with the dashboard. They should agree exactly.
- What happens when a render fails? You may not hit a failure in 30 minutes, so read the policy. Are credits returned automatically, only on request, or not at all? Is the refund partial? ToonBee AI’s guide, for instance, separates the cases: animation credits come back automatically when a video fails, while scene pictures you’ve already seen stay paid for. That level of detail is what you want to find.
- Is there a payment refund window, and what voids it? Some tools refund a purchase only if none of its credits were used, which matters if you plan to “just try” a paid plan.
Minutes 25–30: export and score
Download whatever you made and check:
- Formats and shapes. Is 16:9 available for YouTube and 9:16 for Shorts, Reels and TikTok, or do you have to crop?
- Resolution and file. Does the file play on your phone and upload cleanly?
- Captions and audio. Are captions included or extra? Is narration clean, at a sensible pace?
- Watermark reality. Does the exported file match what the site claimed in minutes 5–10?
Then fill in the scorecard.
The scorecard
| Check | What to record | Pass if |
| Free start | Credits, card required? | No card, enough credits for 4 stills |
| Watermark | On free exports? | Matches the written claim |
| Rights | Commercial use, incl. free credits | Stated in writing |
| Cost visibility | Cost shown before each step | Every step, totals match balance |
| Failure policy | Automatic credit return? | Written and specific |
| Consistency | Score out of 24, single-scene redo | 18+ and redo available |
| Export | 16:9 / 9:16, captions, file plays | Both shapes, clean file |
Running the same test elsewhere
The protocol only works if you run it more than once. Pick a second tool with a different approach. A general short-video generator is a useful comparison: a short-video generator that gives new accounts 100 free credits and exports without a watermark, for example, lets you run the same script and see whether a shot-by-shot tool or a story-first tool suits your work better.
Compare the scorecards side by side. The tool with the most impressive single clip is rarely the one that wins; the one that keeps your character steady, tells you the price before you click and treats failures fairly usually is.
Kevin Yi builds AI video tools, including ToonBee AI.
