Files
LocalAI/docs/content/reference/architecture.md
Ettore Di Giacinto 6af83592d0 docs: cut marketing filler from user-facing prose
A no-ai-slop detect pass over all 85 docs pages and the 8 website content
files. The docs came out clean on every pattern that actually got the blog
post criticized on HN: zero faux-insight setups, zero unearned framing, zero
ledger metaphors, zero pre-chewed numbers, zero importance puffery, zero
weasel attribution, zero recap endings, zero rhetorical setups.

What was left was vocabulary, so that is all this changes. Ten edits in eight
files, no links or code blocks touched:

- overview.md: "In today's AI landscape, privacy, control, and flexibility are
  paramount" and "Ready to dive in?"
- architecture.md: "seamlessly integrate ... effortlessly implemented"
- customize-model.md: "is utilized", "utilizes a shorthand format"
- advanced/_index: "fully leverage LocalAI's capabilities beyond basic usage"
- agents.md, object-detection.md, text-to-audio.md, faq.md: leverage/seamless
  used as filler. text-to-audio also had "before the api provide its response".

Deliberately left alone: "GPU utilization", "KV utilization" and
"highest-leverage knob" are the correct technical terms, not filler.

The docs are reference material and read like it. They do not need the
treatment the blog posts got.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-08-03 21:11:43 +00:00

2.9 KiB

+++ disableToc = false title = "Architecture" weight = 25 +++

LocalAI is an API written in Go that serves as an OpenAI shim, enabling software already developed with OpenAI SDKs to integrate with LocalAI. It can be used as a substitute, even on consumer-grade hardware. This capability is achieved by employing various C++ backends, including ggml, to perform inference on LLMs using both CPU and, if desired, GPU. Internally LocalAI backends are just gRPC server, indeed you can specify and build your own gRPC server and extend LocalAI in runtime as well. It is possible to specify external gRPC server and/or binaries that LocalAI will manage internally.

LocalAI uses a mixture of backends written in various languages (C++, Golang, Python, ...). You can check [the model compatibility table]({{%relref "reference/compatibility-table" %}}) to learn about all the components of LocalAI.

How LocalAI works: clients speak one API to a small core, which routes each request over gRPC to separate backend processes pulled on demand

Backstory

As much as typical open source projects starts, I, mudler, was fiddling around with llama.cpp over my long nights and wanted to have a way to call it from go, as I am a Golang developer and use it extensively. So I've created LocalAI (or what was initially known as llama-cli) and added an API to it.

But guess what? The more I dived into this rabbit hole, the more I realized that I had stumbled upon something big. With all the fantastic C++ projects floating around the community, it dawned on me that I could piece them together to create a full-fledged OpenAI replacement. So, ta-da! LocalAI was born, and it quickly overshadowed its humble origins.

Now, why did I choose to go with C++ bindings, you ask? Well, I wanted to keep LocalAI snappy and lightweight, allowing it to run like a champ on any system and avoid any Golang penalties of the GC, and, most importantly built on shoulders of giants like llama.cpp. Go is good at backends and API and is easy to maintain. And hey, don't forget that I'm all about sharing the love. That's why I made LocalAI MIT licensed, so everyone can hop on board and benefit from it.

As if that wasn't exciting enough, as the project gained traction, mkellerman and Aisuko jumped in to lend a hand. mkellerman helped set up some killer examples, while Aisuko is becoming our community maestro. The community now is growing even more with new contributors and users, and I couldn't be happier about it!

Oh, and let's not forget the real MVP here-llama.cpp. Without this extraordinary piece of software, LocalAI wouldn't even exist. So, a big shoutout to the community for making this magic happen!