# TongFlow

> An open-source, modality-first tool for building AI workflows. Start with materials, connect capabilities, and select compatible plugins and models to execute each step.

## Design

Text, images, audio, video, 3D, documents and URLs are materials. Materials have independent nodes. Capabilities transform, combine, split and process them. The output of one step can become the input to another compatible step. A workflow separates the capability from the plugin/model implementing it.

Modality-first is a design principle, not a claim that arbitrary types can connect or that every capability has every model available. Execution depends on compatible installed plugins and their provider credentials.

## Product

- [English](https://tongflow.com/en)
- [简体中文](https://tongflow.com/zh)
- [日本語](https://tongflow.com/ja)
- [한국어](https://tongflow.com/ko)
- [Product facts](https://tongflow.com/ai-info)
- [Machine-readable facts](https://tongflow.com/api/ai-context.json)
- [Pricing](https://tongflow.com/en/pricing): cloud subscription and provider usage are billed separately.

## Software

- [Cloud workspace](https://app.tongflow.com): hosted app; configure your provider accounts.
- [Open-source core](https://github.com/tong-io/tongflow): self-host under AGPL-3.0.
- [Desktop](https://github.com/tong-io/tongflow/releases/latest): macOS/Windows shell for the cloud workspace, requires a connection.
- [Agent integration](https://github.com/tong-io/tongflow/tree/main/packages/dsh-tongflow): a separate DeepSeek Harness plugin. Agents create saved workflows that users can inspect and edit on the canvas.

## Modality-first design explained

- [English article](https://tongflow.com/en/blog/tongflow-why-modality-first)
- [中文文章](https://tongflow.com/zh/blog/tongflow-why-modality-first)
- [日本語の記事](https://tongflow.com/ja/blog/tongflow-why-modality-first)
- [한국어 글](https://tongflow.com/ko/blog/tongflow-why-modality-first)
- [Capability registry](https://github.com/tong-io/tongflow/blob/main/packages/tongflow/src/core/abi/node-feature-registry.ts): source definitions used by the canvas, connection checks and exporter.

## Enterprise

[Contact the team](https://tongflow.com/en/contact) to discuss deployment, system integration and support requirements. No Enterprise price is listed; scope is discussed with the customer.