Haiper

What it does: Haiper offers text-to-video, image-to-video, and video restyling. Users provide a text prompt or upload an image to generate a short clip (about 4 seconds), or apply artistic styles to existing footage.

Strengths: Performs well on motion graphics and natural scenery; early versions were completely free and required no subscription; the interface is beginner‑friendly and pairs well with AI-generated images from tools like Midjourney. Its underlying diffusion model plus Transformer architecture improves frame‑to‑frame consistency to some extent.

Weaknesses & Risks: Human realism remains weak, making it unsuitable for high‑fidelity character videos; output is limited to roughly 4 seconds, which may not meet longer‑form needs. The product shifted from free access to a credit‑based trial with paid plans, but exact pricing is not disclosed—users face uncertainty about future costs.

Ideal for: social media creators, video prototypers, and hobbyists who need quick, visually appealing short clips; less suited for professional film production or projects demanding realistic human performance.