Noometry

Model comparison

Claude Opus 4.1 vs GLM-4.5V

Claude Opus 4.1 is the stronger model overall, scoring 41.0 to 39.8 on the Noometry Index. GLM-4.5V costs 33× less per token, which makes it the better buy when Claude Opus 4.1's lead doesn't matter for your workload.

Last verified . 13 shared benchmarks.

Claude Opus 4.1 Anthropic

41.0

Rank #142 Confirmed

GLM-4.5V Z.ai (Zhipu)

39.8

Rank #158 Confirmed

Summary

  • They share 13 benchmarks with published results for both. Claude Opus 4.1 scores higher in 7 categories and GLM-4.5V in 2 categories; 9 gaps are clear of the uncertainty.
  • The widest gap is in math, where GLM-4.5V leads 37.4 to 22.3.
  • GLM-4.5V is cheaper at $0.60 / $1.80 per million input/output tokens, against $15 / $75 for Claude Opus 4.1.
  • Claude Opus 4.1 accepts more context: 200K tokens versus 64K.
  • GLM-4.5V has downloadable open weights; the other is API-only.

Side by side

Claude Opus 4.1GLM-4.5V
ProviderAnthropicZ.ai (Zhipu)
Noometry Index41.039.8
Released2025-08-052025-08-11
WeightsProprietaryOpen
Context window200K64K
Max output32K16K
Input $ / M tokens$15$0.60
Output $ / M tokens$75$1.80
Results tracked4815

Sponsored placements are available on pages like this one. Advertise on Noometry

Category by category

Coding Claude Opus 4.1 leads

Claude Opus 4.1: 44.4 (#73), GLM-4.5V: 39.5 (#155)

BenchmarkClaude Opus 4.1GLM-4.5V
LMArena Coding14791347
SWE-bench Verified73.3%—
LMArena WebDev1390—
WeirdML45.9%—
ALE-Bench674.77—
AlgoTune1.34—

Agentic & Tool Use Not comparable

Claude Opus 4.1: 35.0 (#41), GLM-4.5V: —

BenchmarkClaude Opus 4.1GLM-4.5V
Terminal-Bench38%—
GDPval43.6%—
Cybench42%—
DeepResearch Bench48.3%—
LMArena Search1148—
METR Time Horizons66.8%—

Reasoning Claude Opus 4.1 leads

Claude Opus 4.1: 32.2 (#76), GLM-4.5V: 27.4 (#119)

BenchmarkClaude Opus 4.1GLM-4.5V
LMArena Hard Prompts14431334
SimpleBench60%—
Kagi LLM Benchmark—59.8%
Chess Puzzles7%—
EnigmaEval7.2%—
EBR-Bench7.9%—
Mystery Game Puzzles21%—
DTBench80%—
LMCA37.1%—
Epoch Capabilities Index144.12—
ForecastBench62—

Math GLM-4.5V leads

Claude Opus 4.1: 22.3 (#277), GLM-4.5V: 37.4 (#159)

BenchmarkClaude Opus 4.1GLM-4.5V
LMArena Math14311354
FrontierMath (Tiers 1-3)12.6%—
FrontierMath Tier 42.4%—
OTIS Mock AIME 2024-202568.9%—
FrontierMath (Feb 2025 set)7.2%—
FrontierMath Tier 4 (v1)4.2%—

Knowledge Claude Opus 4.1 leads

Claude Opus 4.1: 42.0 (#101), GLM-4.5V: 37.5 (#156)

BenchmarkClaude Opus 4.1GLM-4.5V
LMArena Expert14391353
GPQA Diamond77.3%—
Humanity's Last Exam11.5%—
Confabulations17.1%—
Vectara Hallucination Rate11.8%—

Multimodal GLM-4.5V leads

Claude Opus 4.1: 26.8 (#119), GLM-4.5V: 34.3 (#92)

BenchmarkClaude Opus 4.1GLM-4.5V
LMArena Vision—1154
VPCT35%—

Multilingual Claude Opus 4.1 leads

Claude Opus 4.1: 52.0 (#95), GLM-4.5V: 44.6 (#177)

BenchmarkClaude Opus 4.1GLM-4.5V
LMArena Non-English14051303
LMArena Chinese14271337
LMArena Russian14221298
LMArena Spanish14481336
LMArena French1431—
LMArena German1413—
LMArena Japanese1378—
LMArena Korean1380—

Instruction Following Claude Opus 4.1 leads

Claude Opus 4.1: 75.6 (#58), GLM-4.5V: 69.2 (#175)

BenchmarkClaude Opus 4.1GLM-4.5V
LMArena Instruction Following14351311

Long Context Claude Opus 4.1 leads

Claude Opus 4.1: 44.5 (#63), GLM-4.5V: 39.6 (#171)

BenchmarkClaude Opus 4.1GLM-4.5V
LMArena Longer Query14551304

Writing & Preference Claude Opus 4.1 leads

Claude Opus 4.1: 62.4 (#74), GLM-4.5V: 52.5 (#170)

BenchmarkClaude Opus 4.1GLM-4.5V
LMArena Text14191333
LMArena Creative Writing14121295
LMArena Multi-Turn14441332
Short-Story Creative Writing84.7%—

Frequently asked questions

Is Claude Opus 4.1 better than GLM-4.5V?

Claude Opus 4.1 is the stronger model overall, scoring 41.0 to 39.8 on the Noometry Index. GLM-4.5V costs 33× less per token, which makes it the better buy when Claude Opus 4.1's lead doesn't matter for your workload.

Which is cheaper, Claude Opus 4.1 or GLM-4.5V?

GLM-4.5V is cheaper. It lists at $0.60 per million input tokens and $1.80 per million output tokens; Claude Opus 4.1 lists at $15 and $75.

Is Claude Opus 4.1 or GLM-4.5V better for coding?

Claude Opus 4.1 scores higher on coding benchmarks: 44.4 versus 39.5 in the Noometry coding category.

Which has the bigger context window?

Claude Opus 4.1 does, with 200K tokens against 64K.

How many benchmarks do Claude Opus 4.1 and GLM-4.5V share?

13 benchmarks have published results for both models. Claude Opus 4.1 has 48 scored results on Noometry and GLM-4.5V has 15.

Related comparisons

Go deeper