invoke-ai/invokeai (Invoke) is a creative engine that produces and refines images with Stable Diffusion models. It ships both a locally hosted web server and a React UI, so image generation, editing, and workflow construction all live in one place. The latest release of this repository is v6.14.2, and the source is the invoke-ai/invokeai repository on GitHub.
What the tool does is tie image generation and modification together at the level of whole workflows. The repository description notes that Invoke also serves as the basis for several commercial products. In Unified Canvas, image generation comes with inpainting and outpainting (filling in hidden areas and extending the drawing beyond the edges of the image) plus brush tools, all on a single screen. Workflows & Nodes lets you chain work steps into nodes to build and share generation pipelines, while Board & Gallery Management organizes finished work on boards so you can pull it out and reuse it. The implementation language is TypeScript and the license is Apache-2.0. The repository was created on August 17, 2022, and the recorded star count is 28801.
That said, the scope this record speaks to is limited. v6.14.2 lists no changed items and no performance figures or benchmarks, so what this release fixed and at what level cannot be known. The feature descriptions are confined to a few sentences on what is supported. On a 10-point evaluation scale, only momentum remains at 5.6, while novelty, tech, and quality are empty. This repository can therefore be treated as a target for checking what the project can do, and if you want to base a choice on v6.14.2, it makes sense to confirm the actual change list in the repository's release notes first.