Models

Legnext supports v6, v6.1, niji 6, v7, v8, v8.1, and v8.2. When --v is omitted, the API renders with v7. Pin the version explicitly when repeatability or parameter compatibility matters.

Choose a model

Model	Choose it for	Important compatibility notes
`--v 8.2`	Current V8 aesthetics and native 2K with `--hd`	Rejects `--turbo`, `--q`, `--oref`, `--cref`, and `--sd`
`--v 8.1`	V8 image prompting and native 2K with `--hd`	Same parameter surface as V8.2
`--v 8`	—	Retired upstream on July 24, 2026. The API still accepts it for backward compatibility, but upstream rendering is undefined — migrate to `--v 8.1` or `--v 8.2`. No inpaint, outpaint, or pan actions
`--v 7`	Default behavior and Omni Reference with `--oref`	Supports V7 actions and Draft Mode
`--v 6.1` / `--v 6`	Legacy prompts and Character Reference with `--cref`	Keep only for compatibility with existing workflows
`--niji 6`	Anime and East Asian illustration styles	Uses the Niji model family

The V8 family does not support Turbo mode. Use --fast. The API returns HTTP 400 when a version-specific parameter is rejected.

Exact compatibility

Use the generated image parameter matrix for accepted flags, ranges, and cost multipliers. Agents can validate against the machine-readable mj-image-params.v1.json. The available_actions field is a useful guide for follow-up operations, but it is not an authorization guarantee. Some edit-derived images can still reject an advertised action. Handle that 400 response without retrying the same source image.

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Choose a model

Exact compatibility

​Choose a model

​Exact compatibility

Choose a model

Exact compatibility