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Sourced model record · Catalog current through July 21, 2026

GLM-5.1

A reviewed catalog record from Z.ai, released April 7, 2026. This page reports only what named sources publish about this exact record, with receipts.

Not documented in sourceWeights unknownLanguage

What the evidence says

Developer
Z.ai
Released
April 7, 2026
Domains
Language
Tasks
Language modeling/generation · Question answering
Access
Not documented in source
Weights
Weights unknown

Platform facts

OpenRouter's platform listing, retrieved July 22, 2026. Routed platform prices, not first-party provider prices.

Input price
$0.97 per 1M tokens
Output price
$3.04 per 1M tokens
Context length
204,800 tokens
Listed on OpenRouter
April 7, 2026

Common questions

What is GLM-5.1?

GLM-5.1 is a Z.ai model released April 7, 2026, according to Epoch AI's reviewed catalog record. The record classifies it under language.

How does GLM-5.1 rank on LMArena?

No board Model Gauntlet mirrors currently lists this exact model revision under a reviewed identity, so no rating is reported here.

What does GLM-5.1 cost?

OpenRouter lists it at $0.97 per million input tokens and $3.04 per million output tokens, retrieved July 22, 2026. Those are the platform's routed prices, not first-party provider prices.