Noometry

Model comparison

GLM-4.7 vs GPT-5.5 Pro

GPT-5.5 Pro is the stronger model overall, scoring 64.3 to 42.0 on the Noometry Index. GLM-4.7 costs 68× less per token, which makes it the better buy when GPT-5.5 Pro's lead doesn't matter for your workload.

Last verified . 8 shared benchmarks.

GLM-4.7 Z.ai (Zhipu)

42.0

Rank #124 Confirmed

GPT-5.5 Pro OpenAI

64.3

Rank #8 Confirmed

Summary

  • They share 8 benchmarks with published results for both. GLM-4.7 scores higher in 0 categories and GPT-5.5 Pro in 3 categories; 3 gaps are clear of the uncertainty.
  • The widest gap is in reasoning, where GPT-5.5 Pro leads 73.3 to 24.3.
  • The biggest single-benchmark swing is Chess Puzzles: 6% for GLM-4.7 and 64% for GPT-5.5 Pro.
  • GLM-4.7 is cheaper at $0.60 / $2.20 per million input/output tokens, against $30 / $180 for GPT-5.5 Pro.
  • GPT-5.5 Pro accepts more context: 1.05M tokens versus 205K.
  • GLM-4.7 has downloadable open weights; the other is API-only.

Side by side

GLM-4.7GPT-5.5 Pro
ProviderZ.ai (Zhipu)OpenAI
Noometry Index42.064.3
Released2025-12-222026-04-23
WeightsOpenProprietary
Context window205K1.05M
Max output131K128K
Input $ / M tokens$0.60$30
Output $ / M tokens$2.20$180
Results tracked3614

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Category by category

Coding Not comparable

GLM-4.7: 44.0 (#79), GPT-5.5 Pro: —

BenchmarkGLM-4.7GPT-5.5 Pro
LMArena WebDev1435—
SciCode45.1%—
LMArena Coding1454—
ALE-Bench399.48—

Agentic & Tool Use Not comparable

GLM-4.7: 26.5 (#103), GPT-5.5 Pro: —

BenchmarkGLM-4.7GPT-5.5 Pro
Terminal-Bench33.4%—
Vending-Bench 22,377—

Reasoning GPT-5.5 Pro leads

GLM-4.7: 24.3 (#164), GPT-5.5 Pro: 73.3 (#10)

BenchmarkGLM-4.7GPT-5.5 Pro
SimpleBench47.7%76.9%
CritPt1.7%30.6%
Chess Puzzles6%64%
Epoch Capabilities Index143.51162.07
ARC-AGI-2—84.6%
ARC-AGI-1—96.5%
LMArena Hard Prompts1443—
DTBench—96%
LMCA—53.9%

Math GPT-5.5 Pro leads

GLM-4.7: 38.6 (#135), GPT-5.5 Pro: 84.0 (#10)

BenchmarkGLM-4.7GPT-5.5 Pro
OTIS Mock AIME 2024-202583.3%100%
FrontierMath (Feb 2025 set)2.4%52.4%
FrontierMath Tier 4 (v1)0%39.6%
FrontierMath (Tiers 1-3)—87.7%
FrontierMath Tier 4—78%
ProofBench6%—
LMArena Math1423—

Knowledge GPT-5.5 Pro leads

GLM-4.7: 47.0 (#80), GPT-5.5 Pro: 64.1 (#19)

BenchmarkGLM-4.7GPT-5.5 Pro
GPQA Diamond83.3%93.9%
SimpleQA Verified32.2%—
Vectara Hallucination Rate11.7%—
LMArena Expert1424—

Multilingual Not comparable

GLM-4.7: 52.8 (#79), GPT-5.5 Pro: —

BenchmarkGLM-4.7GPT-5.5 Pro
LMArena Non-English1417—
LMArena Chinese1495—
LMArena French1432—
LMArena German1424—
LMArena Japanese1439—
LMArena Korean1399—
LMArena Russian1423—
LMArena Spanish1434—

Instruction Following Not comparable

GLM-4.7: 74.4 (#95), GPT-5.5 Pro: —

BenchmarkGLM-4.7GPT-5.5 Pro
LMArena Instruction Following1411—

Long Context Not comparable

GLM-4.7: 42.8 (#116), GPT-5.5 Pro: —

BenchmarkGLM-4.7GPT-5.5 Pro
CL-bench15.9%—
CL-bench Life10.9%—
LMArena Longer Query1432—

Writing & Preference Not comparable

GLM-4.7: 60.9 (#93), GPT-5.5 Pro: —

BenchmarkGLM-4.7GPT-5.5 Pro
LMArena Text1435—
LMArena Creative Writing1401—
EQ-Bench Creative Writing1413—
LMArena Multi-Turn1446—

Frequently asked questions

Is GLM-4.7 better than GPT-5.5 Pro?

GPT-5.5 Pro is the stronger model overall, scoring 64.3 to 42.0 on the Noometry Index. GLM-4.7 costs 68× less per token, which makes it the better buy when GPT-5.5 Pro's lead doesn't matter for your workload.

Which is cheaper, GLM-4.7 or GPT-5.5 Pro?

GLM-4.7 is cheaper. It lists at $0.60 per million input tokens and $2.20 per million output tokens; GPT-5.5 Pro lists at $30 and $180.

Which has the bigger context window?

GPT-5.5 Pro does, with 1.05M tokens against 205K.

How many benchmarks do GLM-4.7 and GPT-5.5 Pro share?

8 benchmarks have published results for both models. GLM-4.7 has 36 scored results on Noometry and GPT-5.5 Pro has 14.

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