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GSAP animation engine sub-skill - core, timeline, ScrollTrigger, plugins.
Passed 24 of 24 test cases with the skill, and 22 of 24 without it.
2 fixed22 passed either way0 still failing0 broke
Tokens, turns and time describe resource use, not a dollar price.
This benchmark measured an earlier version of the skill.
A newer attempt on gemini-3.6-flash on 10/3/2026 did not produce a publishable comparison (not comparable). The snapshot above is the previously measured run.
One of 2 test cases the skill fixed. Same model, same prompt, with and without the skill.
A developer is building a commercial application using GSAP 3.15 and needs to use SplitText and MorphSVG. They are trying to find where to download these former Club GreenSock plugins and set up license keys. What is the current packaging and commercial licensing model for these plugins?
| Checked | Without skill | With skill |
|---|---|---|
| The response clarifies that plugins like SplitText and MorphSVG are included directly in the public gsap package. | Missed | Passed |
| The response states that commercial use of these plugins requires no paid subscription. | Missed | Passed |
The instructions your model reads when the skill loads.
Version-sensitive. Every API name, SDK gate and browser-support claim below was verified on 2026-09-08 against primary sources. What against, and when, is in
_jutsu/VERSIONS.md. If that date is old, re-verify before acting on a version number.
GSAP 3.15 (released 13 Apr 2026). Since 3.13 the entire library - including every former Club plugin (SplitText, MorphSVG, DrawSVG, ScrollSmoother, InertiaPlugin, MotionPathHelper, CustomEase…) - ships in the public
gsapnpm package and is free, commercial use included, under the GreenSock Standard "no charge" license. There is no Club paywall. GreenSock also publish official agent skills (MIT, 8 skills: core, timeline, scrolltrigger, plugins, utils, react, performance, frameworks): https://github.com/greensock/gsap-skills - worth installing alongside this sub-skill.
| Criteria | CSS Transitions | Framer Motion | GSAP |
|---|---|---|---|
| Hover / simple toggle | Yes | Yes | Overkill |
| Sequenced timeline | No | Limited | Yes |
| Scroll-driven | scroll-timeline | Limited | ScrollTrigger |
| Complex stagger | No | Basic | Distribution |
| Mobile perf (60fps) | Good | Average | Excellent |
| Text splitting | No | No | SplitText |
| SVG morph / draw | No | No | MorphSVG |
| Bundle size concern | 0kb | ~30kb | ~25kb + plugins |
Rule: if the animation needs timeline, scroll-link, or distributed stagger, use GSAP. Otherwise CSS first.
// Always register plugins at the top level
import gsap from "gsap";
import { ScrollTrigger } from "gsap/ScrollTrigger";
import { SplitText } from "gsap/SplitText";
gsap.registerPlugin(ScrollTrigger, SplitText);
React: use useGSAP() from the @gsap/react package instead of useEffect + manual cleanup.
import { useGSAP } from "@gsap/react";
test cases passed, vs 22 / 24 without
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