# An open-source alternative to Open WebUI for work beyond chat

> Open WebUI and Kortix are both open source, but they solve different problems. One is a self-hosted chat interface over your models. When the work has to run, Kortix is the one we recommend: an AI Operating System where agents land finished work as a change request you review.

URL: https://openwebuialternative.com/

Independent comparison, updated October 2026

**The open-source AI Operating System**

`kortix.yaml`

```yaml
# kortix.yaml
agents:
  support-triage:
    file: agents/support-triage.md   # what it does, in plain markdown
    connectors: all                  # what it may reach
```

Source: https://github.com/kortix-ai/suna

One isolated sandbox per session.

[Try Kortix](https://kortix.com) · [Compare the options](https://openwebuialternative.com/#compare)

Open source · Any model, your keys · Self-host, VPC, or on-prem

## Kortix and Open WebUI, side by side

The Kortix column quotes Kortix, the Open WebUI column quotes its own repository and docs. We recommend Kortix when the work has to run.

| | Kortix (recommended) | Open WebUI |
| --- | --- | --- |
| What it is | The open-source AI Operating System | A self-hosted interface over local and API models |
| Open source | Yes, read it, fork it, audit it | Yes |
| Where it runs | Kortix Cloud, your VPC, or on-prem. Self-host is free | On your own server or laptop, online or fully offline |
| Your configuration | Files in a git repo you own | Admin settings and environment variables in your instance |
| Models | Any model provider with your own keys | Ollama and any OpenAI-compatible API |
| Connectors and tools | 3,000+ apps in a click, plus MCP, OpenAPI, GraphQL and raw HTTP | MCP, MCPO and OpenAPI tool servers, plus plugins |
| Isolation | One isolated sandbox per session | Terminals gives per-user isolated environments |
| Review path | Session work reaches main through a change request | Answers and artifacts stay in the chat |

The Open WebUI column reflects its own repository and documentation, checked October 2026.

## Six layers, each a file or a command you can read

Kortix is the open-source AI Operating System. Your agents, skills, company memory, and connectors live in one git repo you own, and each session runs on its own cloud computer.

### 1. One git repo that is the company

Your agents, their skills, your company memory and every connector in one git repo you own.

`project tree`

```
project (git repo + kortix.yaml)
session: an isolated sandbox on a branch named after the session
the OpenCode agent works
change request: you review and merge to main
```

Source: https://github.com/kortix-ai/suna

### 2. Every tool your company already runs on

3,000+ apps in a click, plus MCP, OpenAPI, Postman, GraphQL and raw HTTP. Connector credentials are brokered server-side and never enter the machine.

`kortix.yaml`

```yaml
# kortix.yaml
agents:
  support-triage:
    connectors: all   # what it may reach
```

Source: https://github.com/kortix-ai/suna

### 3. Any model, your keys

Any model provider with your own keys. Or the ChatGPT plan you already pay for. Or sign in with your OpenCode Console account for OpenCode Zen and Go.

`terminal`

```sh
$ kortix providers login opencode
$ kortix providers login opencode-go
```

Source: kortix providers login --help

### 4. The part that turns a model into an agent

OpenCode is the harness. The harness gives a model planning, tool use and multi-step runs it finishes.

`kortix.yaml`

```yaml
# kortix.yaml
agents:
  support-triage:
    file: agents/support-triage.md   # what it does, in plain markdown
```

Source: https://github.com/kortix-ai/suna

### 5. A cloud computer per session

One isolated sandbox per session. Each session has its own isolated machine and branch.

`terminal`

```sh
$ kortix sessions new --prompt "Summarize this week's commits and open a change request"
```

Source: https://github.com/kortix-ai/suna

### 6. Work lands as a change request

Session work reaches main through a change request. Merge is default-deny for agents.

`terminal`

```sh
$ kortix sessions new --prompt "Reproduce issue #142, fix it, and open a change request"
$ kortix cr ls   # review what the agents propose
```

Source: https://github.com/kortix-ai/suna

**20,000+** GitHub stars

## Open source. Read it, fork it, audit it.

[Read the source](https://github.com/kortix-ai/suna) · [Kortix docs](https://kortix.com/docs)

_FAQ_

## Questions people ask before they switch

Short answers, each quoted from Kortix’s own docs.

### What does an alternative to Open WebUI add beyond a chat UI?

Open WebUI answers questions in a chat over your models and documents. Kortix runs agents on their own cloud computers, takes real actions in your tools and returns finished work: decks, reports, code and replies. Each session lands as a change request you read before it reaches main.

### Can a team self-host it?

Yes. Run it on Kortix Cloud, in your VPC, or on your own on-prem network. Self-host is free. The instance runs as one Docker Compose stack on a Linux box you control.

### Does it work with my models?

Any model provider with your own keys. Or the ChatGPT plan you already pay for. Or sign in with your OpenCode Console account for OpenCode Zen and Go.

### How is it different from a workflow engine?

A workflow engine runs a fixed flowchart: the same steps in the same order every time. Kortix runs open-ended work on a real cloud computer, with the configuration in git and a person approving what changes.

## Run your whole company from one repo you own.

Start with one job, then let the repo grow.

[Compare the options](https://openwebuialternative.com/#compare) · [See the six layers](https://openwebuialternative.com/#how-it-works)

Open source · Any model, your keys · Self-host, VPC, or on-prem