Run LibreChat on GLM-5.3

Name: LibreChat
Author: LibreChat

by LibreChatChat applibrechat.ai

LibreChat is the leading open-source AI chat platform, a self-hosted ChatGPT alternative with multi-model chat, agents, file handling, and search. Custom endpoints are a headline feature: one block in librechat.yaml adds any OpenAI-compatible provider. Point it at Opper and your whole workspace chats across 700+ models on one key, with a choice of EU or US inference behind it.

Run

LibreChatonin

Connect LibreChat to GLM-5.3

Set up with agents

Paste this into your coding agent (Claude Code, Cursor, Codex, and more) and it will set up and build with Opper for you.

Get your API key

Where you can run it

GLM-5.3 runs on the routes below. Route only to EU providers when your data has to stay in Europe.

Provider	Region	Zero data retention	Training	Input	Output
Melious	EU	Zero data retention	No	$1.16	$4.63
TensorX	EU	Zero data retention	No	$1.75	$4.50
Novita	US	Zero data retention	No	$1.40	$4.40

The model

GLM-5.3

by Z.ai

GLM-5.3 is Z.ai's flagship coding and agentic model, post-trained on the GLM-5.2 base (753B MoE): 1M-token context, 128K output, text-only, reasoning always on with a low/high/max effort ladder.