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AI model reference · 2026

GLM 5

Z.AIModel details, evidence, and API facts

GLM-5 is Z.ai’s flagship open-source foundation model engineered for complex systems design and long-horizon agent workflows.

Text generation
Reasoning
Provider endpoint accepts tool parameters
Try GLM 5Compare with another model
Context window
204,800 tokens
Maximum output
128,000 tokens
Base provider API input
$0.60 / 1M tokens
Base provider API rate
Published evidence
1 benchmark, 2 Arena results

Overview

About GLM 5

A concise catalog overview. Technical limits and published evaluation evidence are listed separately below.

GLM-5 is Z.ai’s flagship open-source foundation model engineered for complex systems design and long-horizon agent workflows.

text
reasoning

Published evaluations

Benchmark results

Only results mapped to this exact model and backed by a named source appear here. Different evaluation protocols are not treated as interchangeable.

Source-backed benchmark results for GLM 5
BenchmarkScoreEvaluation detailsSource
SWE-Bench VerifiedA human-validated subset of real GitHub issues used to measure whether a coding agent can produce repository patches that resolve the associated tests.72.8%ResolvedVersion: SWE-Bench Verified 500 · Split: Verified, 500 tasks · Harness: mini-SWE-agent / version 2.0.0 · Attempts: One attempt · Reasoning effort: highProtocol note: Harness version: 2.0.0; Run date: 2026-02-17Methodology SWE-benchBenchmark owner

Human preference

Arena results

Arena scores come from blind human preference votes. They are reported separately from task benchmarks and are not used as substitutes for missing benchmark results.

Arena results for GLM 5
CategoryScoreRankVotesStatus
Arena TextBlind human preference score for text responses.1,457±4#5527,850Published
Arena WebDevBlind human preference score for code and web development.1,435±8#557,068Published

Technical reference

Specifications and API facts

Technical limits and reference provider prices come from the current catalog unless a reviewed external source is listed. Missing values stay marked as unavailable.

Model
Provider
Z.AI
Release date
Not available in reviewed sources
Catalog added
Feb 11, 2026
Context window
204,800 tokens
Maximum output
128,000 tokens
Knowledge cutoff
Not available in reviewed sources
License
Not available in reviewed sources
Capabilities and API
Input types
Text
Output types
Text
Reasoning
Supported
Provider endpoint tool parameters
Accepts tool parameters
Base provider API input
$0.60 / 1M tokens
Base provider cached input
$0.12 / 1M tokens
Base provider API output
$1.92 / 1M tokens

These are reference provider API rates, not Writingmate checkout charges. Access in Writingmate follows the allowances of your Writingmate plan.

Provenance

Sources and update status

Source links are attached to the facts and evaluations they support. Catalog-only values are not presented as independently verified claims.

Evidence last updated Aug 23, 2026.

Catalog record updated Feb 11, 2026.

Catalog-added dates describe when a model entered the catalog, not necessarily its public release date.

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