Model comparison

GLM-4.5V vs Grok 4.20 Multi-Agent

Grok 4.20 Multi-Agent is the stronger model overall, scoring 46.2 to 39.8 on the Noometry Index. GLM-4.5V costs 1.7× less per token, which makes it the better buy when Grok 4.20 Multi-Agent's lead doesn't matter for your workload.

Last verified October 10, 2026. 14 shared benchmarks.

GLM-4.5V Z.ai (Zhipu)

39.8

Rank #158 Confirmed

Grok 4.20 Multi-Agent xAI

46.2

Rank #65 Confirmed

Summary

They share 14 benchmarks with published results for both. GLM-4.5V scores higher in 0 categories and Grok 4.20 Multi-Agent in 9 categories; 9 gaps are clear of the uncertainty.
The widest gap is in reasoning, where Grok 4.20 Multi-Agent leads 43.9 to 27.4.
GLM-4.5V is cheaper at $0.60 / $1.80 per million input/output tokens, against $1.25 / $2.50 for Grok 4.20 Multi-Agent.
Grok 4.20 Multi-Agent accepts more context: 1M tokens versus 64K.
GLM-4.5V has downloadable open weights; the other is API-only.

Side by side

GLM-4.5V and Grok 4.20 Multi-Agent specifications
	GLM-4.5V	Grok 4.20 Multi-Agent
Provider	Z.ai (Zhipu)	xAI
Noometry Index	39.8	46.2
Released	2025-08-11	2026-03-09
Weights	Open	Proprietary
Context window	64K	1M
Max output	16K	30K
Input $ / M tokens	$0.60	$1.25
Output $ / M tokens	$1.80	$2.50
Results tracked	15	20

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Category by category

Coding Grok 4.20 Multi-Agent leads

GLM-4.5V: 39.5 (#155), Grok 4.20 Multi-Agent: 43.0 (#92)

Coding benchmarks
Benchmark	GLM-4.5V	Grok 4.20 Multi-Agent
LMArena Coding	1347	1457

Agentic & Tool Use Not comparable

GLM-4.5V: —, Grok 4.20 Multi-Agent: —

Agentic & Tool Use benchmarks
Benchmark	GLM-4.5V	Grok 4.20 Multi-Agent
LMArena Search	—	1204

Reasoning Grok 4.20 Multi-Agent leads

GLM-4.5V: 27.4 (#119), Grok 4.20 Multi-Agent: 43.9 (#48)

Reasoning benchmarks
Benchmark	GLM-4.5V	Grok 4.20 Multi-Agent
LMArena Hard Prompts	1334	1448
Kagi LLM Benchmark	59.8%	—
NYT Connections (extended)	—	89.6%

Math Grok 4.20 Multi-Agent leads

GLM-4.5V: 37.4 (#159), Grok 4.20 Multi-Agent: 39.4 (#104)

Math benchmarks
Benchmark	GLM-4.5V	Grok 4.20 Multi-Agent
LMArena Math	1354	1442

Knowledge Grok 4.20 Multi-Agent leads

GLM-4.5V: 37.5 (#156), Grok 4.20 Multi-Agent: 40.4 (#119)

Knowledge benchmarks
Benchmark	GLM-4.5V	Grok 4.20 Multi-Agent
LMArena Expert	1353	1445

Multimodal Grok 4.20 Multi-Agent leads

GLM-4.5V: 34.3 (#92), Grok 4.20 Multi-Agent: 40.5 (#48)

Multimodal benchmarks
Benchmark	GLM-4.5V	Grok 4.20 Multi-Agent
LMArena Vision	1154	1259

Multilingual Grok 4.20 Multi-Agent leads

GLM-4.5V: 44.6 (#177), Grok 4.20 Multi-Agent: 54.4 (#43)

Multilingual benchmarks
Benchmark	GLM-4.5V	Grok 4.20 Multi-Agent
LMArena Non-English	1303	1440
LMArena Chinese	1337	1475
LMArena Russian	1298	1457
LMArena Spanish	1336	1447
LMArena French	—	1466
LMArena German	—	1456
LMArena Japanese	—	1405
LMArena Korean	—	1416

Instruction Following Grok 4.20 Multi-Agent leads

GLM-4.5V: 69.2 (#175), Grok 4.20 Multi-Agent: 74.8 (#84)

Instruction Following benchmarks
Benchmark	GLM-4.5V	Grok 4.20 Multi-Agent
LMArena Instruction Following	1311	1420

Long Context Grok 4.20 Multi-Agent leads

GLM-4.5V: 39.6 (#171), Grok 4.20 Multi-Agent: 43.7 (#88)

Long Context benchmarks
Benchmark	GLM-4.5V	Grok 4.20 Multi-Agent
LMArena Longer Query	1304	1431

Writing & Preference Grok 4.20 Multi-Agent leads

GLM-4.5V: 52.5 (#170), Grok 4.20 Multi-Agent: 64.0 (#59)

Writing & Preference benchmarks
Benchmark	GLM-4.5V	Grok 4.20 Multi-Agent
LMArena Text	1333	1450
LMArena Creative Writing	1295	1436
LMArena Multi-Turn	1332	1452

Frequently asked questions

Is GLM-4.5V better than Grok 4.20 Multi-Agent?

Which is cheaper, GLM-4.5V or Grok 4.20 Multi-Agent?

GLM-4.5V is cheaper. It lists at $0.60 per million input tokens and $1.80 per million output tokens; Grok 4.20 Multi-Agent lists at $1.25 and $2.50.

Is GLM-4.5V or Grok 4.20 Multi-Agent better for coding?

Grok 4.20 Multi-Agent scores higher on coding benchmarks: 43.0 versus 39.5 in the Noometry coding category.

Which has the bigger context window?

Grok 4.20 Multi-Agent does, with 1M tokens against 64K.

How many benchmarks do GLM-4.5V and Grok 4.20 Multi-Agent share?

14 benchmarks have published results for both models. GLM-4.5V has 15 scored results on Noometry and Grok 4.20 Multi-Agent has 20.