Text Generation WebUI vs 
Cortex
Text Generation WebUI vs Cortex compared for 2026 — features, license, ease of use, performance and which one to choose. Feature-rich web UI for local models vs Ollama-style runtime from the Jan team.
Updated regularly · curated by OpenSourceAI.tech
Text Generation WebUI vs Cortex at a glance
| Spec | Text Generation WebUI | Cortex |
|---|---|---|
| Category | Run LLMs locally | Run LLMs locally |
| Type | Web UI | Local runtime (CLI) |
| License | AGPL-3.0 | Apache-2.0 |
| Runs locally | Yes | Yes |
| Primary language | Python | C++ |
| Ease of use | Intermediate | Beginner |
| Best for | power users who want maximum knobs and formats | a clean Ollama alternative with swappable engines |
| GitHub stars | — | — |
Feature comparison
| Feature | Text Generation WebUI | Cortex |
|---|---|---|
| Runs locally | ✓ | ✓ |
| Graphical UI | ✓ | ✗ |
| OpenAI-compatible API | ✓ | ✓ |
| Docker | ✓ | ✓ |
| GPU acceleration | ✓ | ✓ |
| Built-in model library | ✓ | ✓ |
How Text Generation WebUI and Cortex score
| Criterion | Text Generation WebUI | Cortex |
|---|---|---|
| Popularity | n/a | n/a |
| Maintenance | n/a | n/a |
| Ease of use | 3.5 | 5.0 |
| Privacy | 5.0 | 5.0 |
| License freedom | 3.5 | 5.0 |
Scores are computed automatically from public signals — GitHub stars (popularity), recent commit activity (maintenance), license type (freedom), local-first design (privacy) and onboarding complexity (ease of use). Indicative, not a verdict.
What each one is
Text Generation WebUI
Text Generation WebUI (oobabooga) is a comprehensive Gradio web interface for running local models across many backends and formats, with extensions and fine-tuning hooks.
- Supports many model formats and backends
- Rich extension ecosystem and parameter control
- Web-based, accessible from any device on your network
Cortex
Cortex is a local AI engine with a simple CLI, an OpenAI-compatible API and multiple backends (llama.cpp, TensorRT-LLM), designed to power the Jan desktop app or run standalone.
- Multiple inference engines behind one CLI
- OpenAI-compatible server out of the box
- Backed by the team behind the Jan desktop app
Key differences
Text Generation WebUI is web UI, while Cortex is local runtime (CLI). Their licenses differ (AGPL-3.0 vs Apache-2.0), which matters if you ship a commercial product. Text Generation WebUI leans more intermediate-friendly, whereas Cortex is more suited to beginner users. In short, Text Generation WebUI fits power users who want maximum knobs and formats, and Cortex fits a clean Ollama alternative with swappable engines.
Which should you choose?
Choose Text Generation WebUI for power users who want maximum knobs and formats. Choose Cortex for a clean Ollama alternative with swappable engines.
There is rarely one winner — many setups use both. The right pick depends on your hardware, your team's skills, and whether you value simplicity or control.
Frequently asked questions
Is Text Generation WebUI or Cortex easier to use?
Cortex is generally the easier of the two to get started with, while Text Generation WebUI rewards more setup with more control.
Are Text Generation WebUI and Cortex free?
Text Generation WebUI is free and open source (AGPL-3.0), and Cortex is free and open source (Apache-2.0). Neither charges for the core software.
Can I run Text Generation WebUI and Cortex locally?
Text Generation WebUI: yes · Cortex: yes. Both can be used without sending your data to a third-party cloud where their setup allows.
Text Generation WebUI vs Cortex — which should I pick in 2026?
Choose Text Generation WebUI for power users who want maximum knobs and formats. Choose Cortex for a clean Ollama alternative with swappable engines.
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