Model comparison

GLM-4.5-Air vs Mistral Medium 3.5

Mistral Medium 3.5 is the stronger model overall, scoring 40.2 to 38.9 on the Noometry Index. GLM-4.5-Air costs 7.1× less per token, which makes it the better buy when Mistral Medium 3.5's lead doesn't matter for your workload.

Last verified October 10, 2026. 17 shared benchmarks.

GLM-4.5-Air Z.ai (Zhipu)

38.9

Rank #177 Confirmed

Mistral Medium 3.5

Mistral AI

40.2

Rank #152 Confirmed

Summary

They share 17 benchmarks with published results for both. GLM-4.5-Air scores higher in 1 category and Mistral Medium 3.5 in 7 categories; 8 gaps are clear of the uncertainty.
The widest gap is in reasoning, where GLM-4.5-Air leads 24.1 to 17.3.
GLM-4.5-Air is cheaper at $0.20 / $1.10 per million input/output tokens, against $1.50 / $7.50 for Mistral Medium 3.5.
Mistral Medium 3.5 accepts more context: 262K tokens versus 131K.

Side by side

GLM-4.5-Air and Mistral Medium 3.5 specifications
	GLM-4.5-Air	Mistral Medium 3.5
Provider	Z.ai (Zhipu)	Mistral AI
Noometry Index	38.9	40.2
Released	2025-07-20	—
Weights	Open	Open
Context window	131K	262K
Max output	98K	210K
Input $ / M tokens	$0.20	$1.50
Output $ / M tokens	$1.10	$7.50
Results tracked	27	22

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Category by category

Coding Mistral Medium 3.5 leads

GLM-4.5-Air: 33.3 (#259), Mistral Medium 3.5: 36.0 (#213)

Coding benchmarks
Benchmark	GLM-4.5-Air	Mistral Medium 3.5
LMArena Coding	1397	1461
LMArena WebDev	—	1264
GSO	2.9%	—

Reasoning GLM-4.5-Air leads

GLM-4.5-Air: 24.1 (#166), Mistral Medium 3.5: 17.3 (#295)

Reasoning benchmarks
Benchmark	GLM-4.5-Air	Mistral Medium 3.5
Kagi LLM Benchmark	43%	41.4%
LMArena Hard Prompts	1379	1436
NYT Connections (extended)	—	12.9%
Epoch Capabilities Index	—	141.35
ForecastBench	59.2	—

Math Mistral Medium 3.5 leads

GLM-4.5-Air: 36.2 (#170), Mistral Medium 3.5: 39.1 (#113)

Math benchmarks
Benchmark	GLM-4.5-Air	Mistral Medium 3.5
LMArena Math	1396	1431
Omni-MATH	39.1%	—

Knowledge Mistral Medium 3.5 leads

GLM-4.5-Air: 35.0 (#191), Mistral Medium 3.5: 40.0 (#126)

Knowledge benchmarks
Benchmark	GLM-4.5-Air	Mistral Medium 3.5
LMArena Expert	1370	1432
Humanity's Last Exam	8.1%	—
MMLU-Pro	76.2%	—
Vectara Hallucination Rate	9.3%	—
GPQA (HELM)	59.4%	—

Multimodal Not comparable

GLM-4.5-Air: —, Mistral Medium 3.5: 38.3 (#65)

Multimodal benchmarks
Benchmark	GLM-4.5-Air	Mistral Medium 3.5
LMArena Vision	—	1223

Multilingual Mistral Medium 3.5 leads

GLM-4.5-Air: 49.1 (#135), Mistral Medium 3.5: 51.9 (#100)

Multilingual benchmarks
Benchmark	GLM-4.5-Air	Mistral Medium 3.5
LMArena Non-English	1366	1404
LMArena Chinese	1426	1442
LMArena French	1399	1448
LMArena German	1377	1451
LMArena Korean	1308	1385
LMArena Russian	1373	1395
LMArena Spanish	1386	1409
LMArena Japanese	1348	—

Instruction Following Mistral Medium 3.5 leads

GLM-4.5-Air: 69.6 (#171), Mistral Medium 3.5: 74.6 (#90)

Instruction Following benchmarks
Benchmark	GLM-4.5-Air	Mistral Medium 3.5
LMArena Instruction Following	1354	1415
IFEval	81.2%	—

Long Context Mistral Medium 3.5 leads

GLM-4.5-Air: 41.6 (#135), Mistral Medium 3.5: 43.2 (#103)

Long Context benchmarks
Benchmark	GLM-4.5-Air	Mistral Medium 3.5
LMArena Longer Query	1366	1415

Writing & Preference Mistral Medium 3.5 leads

GLM-4.5-Air: 55.9 (#139), Mistral Medium 3.5: 58.5 (#117)

Writing & Preference benchmarks
Benchmark	GLM-4.5-Air	Mistral Medium 3.5
LMArena Text	1384	1421
LMArena Creative Writing	1343	1374
LMArena Multi-Turn	1371	1423
WildBench	78.9%	—
EQ-Bench 4	—	993

Frequently asked questions

Is GLM-4.5-Air better than Mistral Medium 3.5?

Which is cheaper, GLM-4.5-Air or Mistral Medium 3.5?

GLM-4.5-Air is cheaper. It lists at $0.20 per million input tokens and $1.10 per million output tokens; Mistral Medium 3.5 lists at $1.50 and $7.50.

Is GLM-4.5-Air or Mistral Medium 3.5 better for coding?

Mistral Medium 3.5 scores higher on coding benchmarks: 36.0 versus 33.3 in the Noometry coding category.

Which has the bigger context window?

Mistral Medium 3.5 does, with 262K tokens against 131K.

How many benchmarks do GLM-4.5-Air and Mistral Medium 3.5 share?

17 benchmarks have published results for both models. GLM-4.5-Air has 27 scored results on Noometry and Mistral Medium 3.5 has 22.