Local LLM runtime
TabbyAPI
TabbyAPI is a AGPL-3.0-licensed local-LLM server-capable runtime for Linux · Windows, running on CUDA · ROCm, with an OpenAI-compatible API. Ease of use 3/5 in our sourced ratings.
- License
- AGPL-3.0
- Operating systems
- Linux · Windows
- Backends
- CUDA · ROCm
- Install
- source
- Ease of use
- 3/5
- GitHub stars
- 1,273
- Engine
- exllamav2
- Graphical app (GUI)
- Server mode
- OpenAI-compatible API
- CPU offload
- Multi-GPU
- Speculative decoding
- LoRA support
- KV-cache quantization
As of 2026-07-08 · source · GitHub
Quant-format support
What the feasibility gate checks before any VRAM math — per format and backend.
| Format | Backend | Supported |
|---|---|---|
| exl2 | CUDA | yes |
| exl2 | Metal | no |
Will your machine run a model with TabbyAPI?
Check with TabbyAPI preselected →Support facts come from each runtime's own documentation, stamped and dated — how the math works.