Kilo Code is an open-source AI coding agent for VS Code. It combines autonomous editing, planning and architect modes, and a provider catalogue built from the open models.dev listing, where Opper is one of the providers. Pick Opper, paste your key, and you can run it on any of 700+ models on one gateway, with a choice of region.
RunKilo Codeonin
Connect Kilo Code to GLM-5.3-Flash
Add Opper in Kilo Code
In Kilo Code, open Settings → Providers → Show more providers, search for Opper and paste your Opper key. Then pick GLM-5.3-Flash.
GLM-5.3-Flash runs on the routes below. Route only to EU providers when your data has to stay in Europe. Some routes also sell flex and priority processing: the same model at another price, picked per request with service_tier. How service tiers work.
GLM-5.3-Flash by Z.ai is a natively multimodal 320B MoE with 18B active parameters, hybrid sparse and linear attention, a 1M-token context, and MIT open weights for coding and agent work.