The author says they used LongCat-2.5 through Claude Code to generate a rocket launch animation in one go. The original post includes a full text brief and a demo video, but does not make the referenced images or generated code available.
Suitable task: Generating a Three.js animation prototype from reference images and written requirements.
Unsuitable task: Using this case to assess the model's success rate on other programming tasks or its production readiness.
Applicable model version: LongCat-2.5; the specific model ID is not provided.
Applicable client, agent, or API: Claude Code; the author says they used the LongCat API.
Recommended reasoning level and parameters: Not specified.
The original post presents the complete English brief, which can be viewed at the original URL. It asks for a single-file HTML implementation using Three.js, based on images in inputs/: a rocket with a white body, red nose cone and fins, and red and blue stripes; a launch tower and platform; and an animation showing ignition, liftoff, and departure with an exhaust trail.
This is a case summary, not a verbatim copy of the author's original prompt. The images in inputs/ were not made available with the post, so the input cannot be fully reconstructed.
The author says they connected the LongCat API to Claude Code.
They submitted the text brief from the original post and referenced images in inputs/.
The author says the result was generated in one go, without follow-up prompts or fixes; the original post includes a demo video of about 45 seconds.
The video in the original post plays and shows a rocket lifting off with a trail. The claims that it was generated in one go, needed no fixes, and that the video was the direct output are all the author's account; the post provides no run logs or generated HTML for independent verification.
The author also says the model independently chose a movie title, price, and membership tiers, but this does not match the publicly available rocket animation brief or the rocket footage reviewed. There is no basis for concluding that these items were part of this output.
The reference images, full setup, generated code, and run logs were not made available. The reasoning parameters, time taken, and cost are unknown. The video does not establish the code's structure, completeness of its interactions, or cross-browser compatibility.
Review the English brief in the original post, prepare your own reference images, and put them in inputs/. Configure LongCat and Claude Code as needed, then run it. Since the original images and parameters are missing, the result can only serve as a test of a similar task, not a strict reproduction.
LongCat 2.5
