Best Onyx Alternatives in 2026

#1 alternative

Hebbia

AI built for the rigor of finance, law, and enterprise research

#2 alternative

Buzz

Transcribe and caption audio offline on your computer.

#3 alternative

InvokeAI

A professional local studio for AI image generation.

#4 alternative

Jan

Run open-source AI chatbots offline on your own computer.

#5 alternative

Ollama

Run open LLMs locally with a single command.

#6 alternative

LlamaIndex

Data framework for LLM apps and knowledge agents

#7 alternative

Milvus

Open-source vector database built for scale

#8 alternative

vLLM

High-throughput open-source LLM inference engine

#9 alternative

Civitai

Open model hub and image generator for Stable Diffusion, LoRAs and custom checkpoints

#10 alternative

Jina AI Reader

Turn any URL into clean, LLM-friendly Markdown with a single prefix

#11 alternative

Plandex

Open-source terminal AI coding agent built for large, multi-file projects

#12 alternative

Kilo Code

Open-source, model-agnostic AI coding agent for VS Code and JetBrains