Run Hermes on GLM-5.3

Name: Hermes
Author: Nous Research

Hermes is an open agent from Nous Research, the team behind the Hermes family of open-weight models. It runs as a terminal agent for general assistant and tool-use workflows, designed in the open and built to be steerable and unopinionated rather than locked down. On Opper it runs on a single key across 700+ models with full observability and a choice of region.

Run

Hermesonin

Launch Hermes on 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.