GLM 4.6 is Zhipu's iterative advance over GLM-4.5, with 357 billion total parameters (32 billion active) in a Mixture-of-Experts configuration tuned for extended reasoning and agent workflows. Its 200K context window, with up to 128K output, supports long documents, multi-turn technical conversations, and complex tool-driven agentic systems. Released September 2025, GLM 4.6 improves coding performance, function calling, and search-based agent integration over GLM-4.5, making it well suited to retrieval-augmented generation, support automation, and information synthesis. It keeps the bilingual training and hybrid reasoning design of the earlier release, balancing depth and speed. Available as open weights under an MIT license, GLM 4.6 targets developers building production agents that need deeper context for sophisticated multi-step reasoning, tool coordination, and long-horizon planning, including code review automation, document-heavy question answering, and multi-document reasoning.
GLM 4.6 runs on 2 different routes through the Opper gateway. Compare residency, ZDR, and training posture at a glance β full data-handling detail per route below.
Training posture across routes: No training on prompts by default.
Each route hosting GLM 4.6 has its own privacy posture, residency, and GDPR terms. Postures are maintained by Opper with a last-verification timestamp.
Zero data retention is available via Opper Enterprise contract. No training on customer data. US; unknown.
Zero data retention is available via Opper Enterprise contract. No training on customer data. US; SCCs; DPA available.
Independent benchmark scores β composite indices for reasoning, coding, and math, plus individual eval scores where available.
Call GLM 4.6 through the Opper gateway with one API key. Let your coding agent set it up, or call it directly β Opper is drop-in compatible with the OpenAI, Anthropic, and Google AI SDKs.
Copy this and paste it into your coding agent β Claude Code, Cursor, Codex, and more β and it'll wire up Opper for you.
import OpenAI from "openai";const client = new OpenAI({apiKey: process.env.OPPER_API_KEY,baseURL: "https://api.opper.click/v3/compat",});const completion = await client.chat.completions.create({model: "deepinfra/zai-org/GLM-4.6",messages: [{ role: "user", content: "Hello" }],});console.log(completion.choices[0].message.content);
Side-by-side on privacy, EU hosting, pricing, and benchmarks.
