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Z.ai: GLM 5.1

z-ai/glm-5.1

26th smartest of 180ReasoningToolsJSON
Use via OpenRouter ↗
Intelligence
43.8
26th of 180
Design Elo
1366
Data Viz
Speed
93
74th fastest
Latency
529ms
first token
Input price
$0.980
203rd cheapest
Context
203K

How it compares

Smarter than86%
of all ranked models
Faster than76%
of all ranked models
Cheaper than32%
of all ranked models

Overview

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...

Benchmarks

independent · via OpenRouter
Artificial Analysis81th percentile
Intelligence Index
43.8
Coding Index
35.8
Agentic Index
66.0
GPQA Diamond
84%
Humanity's Last Exam
26%
SciCode
36%
Tau²-Bench (agentic)
97%
Design Arena · Elo5,939 tournaments
3D
1341
Game Dev
1337
UI Component
1333
codecategories
1332
Data Viz
1325
Website
1320
svg
1290
webapps
1259
agenticslides
1245
mobileapps
1245
fullstack
1244
godotgamedev
1236
agenticslides(python-pptx)
1234
androidnative
1225
agenticgamedev
1216
agentichtmlslides
1205
agenticslides(html)
1204

Providers & pricing (19)

ProviderIn $/MOut $/MUptime
GMICloudfp8$0.980$3.0870.7%
Baidufp8$0.980$3.08100%
Waferfp4$1.00$3.2098.6%
DeepInfrafp4$1.05$3.5099.9%
StreamLake$1.19$3.7499.9%
Chutesfp8$1.20$4.0096%
Phala$1.21$4.2094.7%
AtlasCloudfp8$1.26$3.9699.7%
BaseTenfp4$1.30$4.302.1%
Novitafp8$1.38$4.40100%
Together$1.40$4.4096.7%
Parasailfp8$1.40$4.40100%
Fireworks$1.40$4.40100%
Z.AIfp8$1.40$4.40100%
SiliconFlowfp8$1.40$4.4099.8%
Ambientfp8$1.40$4.4096.5%
Friendli$1.40$4.4099.9%
Inceptronfp8$1.40$4.4099.1%
Venicefp8$1.75$5.50100%

Specifications

Context window203K
Max output
Knowledge cutoff
Input modalitiestext
Output modalitiestext
Prompt caching
Cache read price$0.182/M
ModeratedNo

GLM 5.1 FAQ

How much does GLM 5.1 cost?

GLM 5.1 costs $0.980 per million input tokens and $3.08 per million output tokens via OpenRouter, making it 203rd cheapest of 298 paid models.

How smart is GLM 5.1?

GLM 5.1 scores 43.8 on the Artificial Analysis Intelligence Index, ranking 26th of 180 benchmarked models, with a GPQA Diamond score of 84%.

How fast is GLM 5.1?

GLM 5.1 generates around 93 tokens per second with 529ms time-to-first-token (p50), the 74th fastest tracked model.

What is GLM 5.1's context window?

GLM 5.1 supports a 203K-token context window. It accepts text input.

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