# Observal vs Transformer Lab

> Two self-hosted projects, compared on the numbers selfhost.directory tracks live: score, popularity, release cadence and setup effort.

| | Observal | Transformer Lab |
|---|---|---|
| Score | 65/100 ✓ | 61/100 |
| Rank in category | #40 of 209 in AI Agents | #12 of 25 in LLM Inference |
| GitHub stars | 4 534 | 5 199 ✓ |
| Stars, last 30 days | +1 160 ✓ | +2 |
| Stable releases, 12 months | 33 ✓ | 9 |
| Latest release | v1.15.1 · 16 Oct 2026 ✓ | v0.40.1 · 19 Jun 2026 |
| Setup | Moderate | Moderate |
| Official Docker image | Yes ✓ | No |
| License | Apache-2.0 | AGPL-3.0 |
| Main language | Python | Python |

## Which one should you pick?

Observal scores 65/100 against 61/100 for Transformer Lab, so it is the safer default.

Observal ships more often: 33 stable releases in the past year, against 9 for Transformer Lab.

Observal is growing faster right now (+1 160 stars in 30 days).

## Details

- [Observal](https://selfhost.directory/project/observal) (markdown: https://selfhost.directory/project/observal.md)
- [Transformer Lab](https://selfhost.directory/project/transformerlab-app) (markdown: https://selfhost.directory/project/transformerlab-app.md)

---
Source: https://selfhost.directory/compare/observal-vs-transformerlab-app