GLM 5.1
Z.ai (Zhipu AI)family · GLM5.1huggingface.co/zai-org/GLM-5.1
GLM-5.1 delivers a major leap in coding capability, with particularly significant gains in handling long-horizon tasks. Unlike previous models built around minute-level interactions, GLM-5.1 can work independently and continuously on...
Updated 5 h ago · first seen 11 Sept 2026
model_01M294WW1CDHH48R3T2VC41VX7
Overview
Identity
- Canonical model
- Yesidentity confidence: mediumOne row per real model release. Artifacts (checkpoints, quantisations, conversions) and folded evaluation variants point here.
- Official checkpoints
- official_checkpoints = hf_repo identifiers carried by the model itself; artifacts are separate entities pointing here through canonical_id.
- Artifacts
- 1 quantization0 official · 1 third-partySeparate entities (checkpoint · quantization · conversion · packaging) pointing to this model through canonical_id.
- Provider deployments
- 2
- API aliases
- glm-5-1glm-5-1-non-reasoningz-ai/glm-5.1Identifiers under which providers and evaluators refer to this model.
- Folded evaluation variants
- 1Effort / thinking variants (…-high, …-non-reasoning) are result configurations of this model, not separate models. Their old URLs redirect here.
Openness
Open weights— weights downloadable under MIT; commercial use allowed; redistribution allowed; derivatives allowed; 4 dimensions unknown.
Weights downloadable under a permissive or Creative Commons licence allowing commercial use; code or data may be missing.
Weights
Yes
Inference code
—
Training code
—
Training data
—
Dataset
—
Commercial use
Yes
Redistribution
Yes
Derivatives
Yes
Licence: MIT License (permissive · SPDX MIT · stated as “mit”)
dimensions marked null are unknown, not false
Key facts
- Release date
Source:Hugging Face Hub (public pages, model cards, papers)T2observed 10 h agomedium
- Status
Source:Artificial AnalysisT2observed 13 h agomedium
- Model card
Source:Hugging Face Hub (public pages, model cards, papers)T2observed 15 h agomedium
- Openrouter id
Source:OpenRouter public model & pricing listingT2observed 15 h agomedium
Architecture
- Architecture
Source:Hugging Face Hub (public pages, model cards, papers)T2observed 14 h agomedium
- Model type
Source:Hugging Face Hub (public pages, model cards, papers)T2observed 14 h agomedium
- Parameters
Source:Hugging Face Hub (public pages, model cards, papers)T2observed 15 h agomedium
- Weights dtype
Source:Hugging Face Hub (public pages, model cards, papers)T2observed 14 h agomedium
- File size
Source:Hugging Face Hub (public pages, model cards, papers)T2observed 14 h agomedium
- Library name
Source:Hugging Face Hub (public pages, model cards, papers)T2observed 14 h agomedium
- Pipeline tag
Source:Hugging Face Hub (public pages, model cards, papers)T2observed 15 h agomedium
- Hugging Face repo
Source:OpenRouter public model & pricing listingT2observed 15 h agomedium
Capabilities
Modalities
- Modalities
- text
- Input
- text
- Output
- text
Capabilities
Tool calling
Yes
OpenRouter public model & pricing listing · T2
Structured output
Yes
OpenRouter public model & pricing listing · T2
Reasoning
Yes
Artificial Analysis · T2
Vision
Unavailable
Audio
Unavailable
Fine-tuning available
Unavailable
- Context window
Source:OpenRouter public model & pricing listingT2observed 12 h agomedium
- Max output
Source:OpenRouter public model & pricing listingT2observed 15 h agomedium
- Languages
Source:Hugging Face Hub (public pages, model cards, papers)T2observed 14 h agomedium
Benchmarks30
Compare with another model →Comparable same task and conditions · Partially comparable same task, conditions differ (effort, temperature, judge) · Not comparable different variant or metric
Current rows only, grouped by benchmark → canonical metric → comparability group (task configuration). Effort variants folded into this model appear as rows of the same group. 30 current rows in total. “vs leader” compares with the current leader of the benchmark's primary group only; other groups are not directly comparable. Comparability rules →
Providers & Pricing2
All offers in the price terminal →USD per 1M tokens as published by each provider; native units (per-request fees, flex/priority tiers) are kept verbatim. Rows are append-only — every price change is kept in the history below. Cost of a workload →
Price history
Output price · USD / 1M tokens 2 providers
- Z.ai API
- OpenRouter
- OpenRouterfirst observed $3.0412 Sept 2026
- Z.ai APIfirst observed $3.0411 Sept 2026
Input price · USD / 1M tokens 2 providers
- Z.ai API
- OpenRouter
- OpenRouterfirst observed $0.96612 Sept 2026
- Z.ai APIfirst observed $0.96611 Sept 2026
Hardware fit37
Assumptions (7)
- Estimated, not measured: weights = parameters × bytes/param × 1.15 runtime overhead (or the observed artifact file size when one is recorded).
- bytes/param: 4bit = 0.5, 8bit = 1.0, fp16 = 2.0 (uniform quantization, no per-layer exceptions).
- KV cache: 2 × layers × kv_heads × head_dim × 2 bytes × context × batch when the architecture is known; otherwise 0.5 GB per 8 192 tokens (× batch), independent of architecture (GQA/MLA models need less).
- A model 'fits' when the estimate is at most the device memory minus 2 GB reserved for the OS and framework.
- Mixture-of-experts models are estimated on total parameters (all experts must be resident); active parameters are ignored.
- Device memory uses the largest configuration when several are listed (e.g. Apple silicon tiers).
- Multi-GPU: device memories are summed; interconnect bandwidth, tensor-parallel replication and pipeline bubbles are not modelled.
Lineage
Open in Graph →Versions & Artifacts1
Version history
Context window2 changes
11 Sept 2026→11 Sept 2026→12 Sept 2026current
Licensefirst observation only
11 Sept 2026current
Max outputfirst observation only
11 Sept 2026current
Opennessfirst observation only
11 Sept 2026current
Parametersfirst observation only
11 Sept 2026current
Statusfirst observation only
11 Sept 2026current
Each hop is a claim: click a value for its source, tier and observation time. Nothing is overwritten — a new observation closes the previous claim.
Artifacts 1
quantization 1
- zai-org/GLM-5.1-FP8Z.ai (Zhipu AI) · FP8 · BF16/F32/F8_E4M3756.2 GB
Papers1
- arXiv:2602.15763Active35
Timeline20
Full timeline →OpenRouter lists GLM 5.1 at $0.966 in / $3.036 out per 1M tokens
openrouterGLM 5.1 scores 43.18% on Terminal-Bench
artificial_analysisGLM 5.1 scores 61.8% on Terminal-Bench
artificial_analysisGLM 5.1 scores 2.02% on Terminal-Bench
artificial_analysisGLM 5.1 scores 30.07% on Humanity's Last Exam
artificial_analysisGLM 5.1 scores 26.45 on Artificial Analysis Intelligence Index
artificial_analysisGLM 5.1 scores 35.61% on Terminal-Bench
artificial_analysisGLM 5.1 scores 27.94% on Humanity's Last Exam
artificial_analysisGLM 5.1 scores 24.24 on Artificial Analysis Intelligence Index
artificial_analysisGLM 5.1: reasoning changed from false to true
ReasoningNo→Yesartificial_analysisGLM 5.1: context length changed from 200000 to 204800
Context window200K tokens→204.8K tokensopenrouterGLM 5.1: release date changed from 2026-04-03 to 2026-04-07
Release date3 Apr 2026→7 Apr 2026openrouterGLM 5.1: release date changed from 2026-04-07 to 2026-04-03
Release date7 Apr 2026→3 Apr 2026huggingface
Change history55
Viewing AI Atlas as of 12 Aug 2026 — attributes exactly as the atlas knew them on that day; later corrections are not shown.
Back to today →GLM 5.1 was not yet in AI Atlas on 12 Aug 2026
Release daterelease_date6
Statusstatus2
Opennessopenness2
Licenselicense1
Architecturearchitecture1
Parametersparameter_count1
Context windowcontext_length4
Max outputmax_output_tokens1
Modalitiesmodalities1
Input modalitiesmodalities_input1
Output modalitiesmodalities_output1
Languageslanguages1
File sizefile_size_gb1
Hugging Face repohf_repo1
Pipeline tagpipeline_tag1
Model cardmodel_card_url1
Downloadsmetric.downloads1
Likesmetric.likes1
Aa context windowaa_context_window1
Aa deprecatedaa_deprecated1
Aa opennessaa_openness1
Commercial use allowedcommercial_use_allowed1
Derivatives allowedderivatives_allowed1
Descriptiondescription1
Gatedgated1
Hf inference providershf_inference_providers1
Last modifiedlast_modified1
Library namelibrary_name1
Aa median output tokens per secondmetric.aa_median_output_tokens_per_second3
Downloads all timemetric.downloads_all_time1
Model typemodel_type1
Openrouter idopenrouter_id1
Openrouter listed atopenrouter_listed_at1
Reasoningreasoning3
Redistribution allowedredistribution_allowed1
Structured outputstructured_output1
Supported parameterssupported_parameters1
Tool callingtool_calling1
Weights availableweights_available1
Weights dtypeweights_dtype1
Claims are temporal and append-only: a new observation closes the previous claim (valid_to) instead of overwriting it. Conflicting claims from different sources are kept side by side and flagged — never averaged. Methodology →
Provenance
Attributed facts
43
Source tiers
T243
Freshest observation
5 h ago
Conflicts
None
Source documents 5
Tier 1 = official/primary, 2 = quality secondary, 3 = community, 4 = unverified. Every snapshot is archived; see all sources and the methodology.
Data quality (72/100) measures how well AI Atlas knows this entity — completeness, primary-source ratio, freshness, conflicts — never how good the model is. Methodology →