HeyGen Video API

HeyGen Video is a generative video model from HeyGen that builds complete scenes from scratch rather than assembling clips from a stock library. It accepts text prompts, images, and reference videos as input, and produces video with visuals, dialogue, and sound effects in a single pass. Output resolution ranges from 480p up to 2K, and the model supports fixed seeds plus up to 12 reference materials. It handles both text-to-video and image-to-video work, and generates sound effects natively. The model responds best to shot-list style instructions: describe subject motion, camera setup, visual style, and audio or other constraints item by item to keep results controllable. That makes it well suited to product review videos such as unboxings, comparisons, and tutorials; advertising and marketing assets including social ads, brand films, and e-commerce product showcases; and education and training content, where avatar presenters can explain material in more than 175 languages. Teams can also stack shot descriptions to build storyboards for film-style scenes and short films, or apply it to vertical industries such as real estate and corporate communications. HeyGen Video is API- and agent-friendly, with an MCP server, llms.txt, and typed schemas that let AI agents like Claude and Cursor call it directly. It also integrates into the Video Agent workflow, which automates scripting, scene construction, avatar selection, voiceover, and subtitles.

Your bill depends on the provider you use, its prices and your usage. Longer inputs or other conditions may have different prices. Billed based on the actual generation cost. See your bill for the final amount.

It accepts text prompts, images, and reference videos, and can use up to 12 reference materials in a single generation.

It outputs video that includes visuals, dialogue, and sound effects, at resolutions from 480p up to 2K.

It fits product reviews, advertising and marketing assets, education and training content, film-style scenes and short films, and vertical applications such as real estate and corporate promotion.

Shot-list style instructions work best: describe subject motion, camera settings, visual style, and audio or constraints item by item for controllable results.

Yes. It provides an MCP server, llms.txt, and typed schemas so agents such as Claude and Cursor can invoke video generation directly.

HeyGen Video serves as the core generation engine, running alongside Seedance 2.0 and Veo 3.1 on the HeyGen platform, where users can pick a model per shot in the editor.