Model comparison

Claude Sonnet 5.5 vs GLM-4.6V

Claude Sonnet 5.5 is the stronger model overall, scoring 60.5 to 40.9 on the Noometry Index. GLM-4.6V costs 8.9× less per token, which makes it the better buy when Claude Sonnet 5.5's lead doesn't matter for your workload.

Last verified October 10, 2026. 0 shared benchmarks.

Claude Sonnet 5.5 Anthropic

60.5

Rank #10 Confirmed

GLM-4.6V Z.ai (Zhipu)

40.9

Rank #133 Confirmed

Summary

The widest gap is in knowledge, where Claude Sonnet 5.5 leads 66.0 to 37.4.
GLM-4.6V is cheaper at $0.30 / $0.90 per million input/output tokens, against $2 / $10 for Claude Sonnet 5.5.
Claude Sonnet 5.5 accepts more context: 1M tokens versus 128K.
GLM-4.6V has downloadable open weights; the other is API-only.

Side by side

Claude Sonnet 5.5 and GLM-4.6V specifications
	Claude Sonnet 5.5	GLM-4.6V
Provider	Anthropic	Z.ai (Zhipu)
Noometry Index	60.5	40.9
Released	2026-09-28	2025-12-08
Weights	Proprietary	Open
Context window	1M	128K
Max output	128K	33K
Input $ / M tokens	$2	$0.30
Output $ / M tokens	$10	$0.90
Results tracked	16	12

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Category by category

Coding Claude Sonnet 5.5 leads

Claude Sonnet 5.5: 65.5 (#6), GLM-4.6V: 40.2 (#128)

Coding benchmarks
Benchmark	Claude Sonnet 5.5	GLM-4.6V
FrontierCode	52.1%	—
CursorBench	55.5%	—
LMArena WebDev	1699	—
FrontierSWE	61.9%	—
SciCode	61%	—
LMArena Coding	—	1390
ALE-Bench	1,819	—

Agentic & Tool Use Not comparable

Claude Sonnet 5.5: 44.9 (#14), GLM-4.6V: —

Agentic & Tool Use benchmarks
Benchmark	Claude Sonnet 5.5	GLM-4.6V
APEX-Agents	75.5%	—

Reasoning Claude Sonnet 5.5 leads

Claude Sonnet 5.5: 52.4 (#29), GLM-4.6V: 26.5 (#117)

Reasoning benchmarks
Benchmark	Claude Sonnet 5.5	GLM-4.6V
CritPt	31.4%	—
LMArena Hard Prompts	—	1368
Mystery Game Puzzles	65%	—

Math Not comparable

Claude Sonnet 5.5: 88.7 (#4), GLM-4.6V: —

Math benchmarks
Benchmark	Claude Sonnet 5.5	GLM-4.6V
FrontierMath (Tiers 1-3)	88.8%	—
FrontierMath Tier 4	80.5%	—
OTIS Mock AIME 2024-2025	100%	—
ProofBench	100%	—

Knowledge Claude Sonnet 5.5 leads

Claude Sonnet 5.5: 66.0 (#11), GLM-4.6V: 37.4 (#148)

Knowledge benchmarks
Benchmark	Claude Sonnet 5.5	GLM-4.6V
GPQA Diamond	95.6%	—
SimpleQA Verified	46.5%	—
LMArena Expert	—	1372

Multimodal Claude Sonnet 5.5 leads

Claude Sonnet 5.5: 53.2 (#5), GLM-4.6V: 34.2 (#83)

Multimodal benchmarks
Benchmark	Claude Sonnet 5.5	GLM-4.6V
LMArena Vision	—	1164
Furniture Assembly	75%	—

Multilingual Not comparable

Claude Sonnet 5.5: —, GLM-4.6V: 48.8 (#135)

Multilingual benchmarks
Benchmark	Claude Sonnet 5.5	GLM-4.6V
LMArena Non-English	—	1359
LMArena Chinese	—	1426
LMArena Russian	—	1341

Instruction Following Not comparable

Claude Sonnet 5.5: —, GLM-4.6V: 71.6 (#145)

Instruction Following benchmarks
Benchmark	Claude Sonnet 5.5	GLM-4.6V
LMArena Instruction Following	—	1351

Long Context Not comparable

Claude Sonnet 5.5: —, GLM-4.6V: 41.3 (#138)

Long Context benchmarks
Benchmark	Claude Sonnet 5.5	GLM-4.6V
LMArena Longer Query	—	1358

Writing & Preference Not comparable

Claude Sonnet 5.5: —, GLM-4.6V: 56.8 (#132)

Writing & Preference benchmarks
Benchmark	Claude Sonnet 5.5	GLM-4.6V
LMArena Text	—	1377
LMArena Creative Writing	—	1347
LMArena Multi-Turn	—	1359

Frequently asked questions

Is Claude Sonnet 5.5 better than GLM-4.6V?

Which is cheaper, Claude Sonnet 5.5 or GLM-4.6V?

GLM-4.6V is cheaper. It lists at $0.30 per million input tokens and $0.90 per million output tokens; Claude Sonnet 5.5 lists at $2 and $10.

Is Claude Sonnet 5.5 or GLM-4.6V better for coding?

Claude Sonnet 5.5 scores higher on coding benchmarks: 65.5 versus 40.2 in the Noometry coding category.

Which has the bigger context window?

Claude Sonnet 5.5 does, with 1M tokens against 128K.

How many benchmarks do Claude Sonnet 5.5 and GLM-4.6V share?

0 benchmarks have published results for both models. Claude Sonnet 5.5 has 16 scored results on Noometry and GLM-4.6V has 12.