Noometry

Model comparison

GLM-4.6 vs Step 5 Preview

Step 5 Preview is the stronger model overall, scoring 47.9 to 41.4 on the Noometry Index.

Last verified . 16 shared benchmarks.

GLM-4.6 Z.ai (Zhipu)

41.4

Rank #135 Confirmed

Step 5 Preview StepFun

47.9

Rank #58 Confirmed

Summary

  • They share 16 benchmarks with published results for both. GLM-4.6 scores higher in 0 categories and Step 5 Preview in 8 categories; 6 gaps are clear of the uncertainty.
  • The widest gap is in reasoning, where Step 5 Preview leads 40.0 to 23.7.
  • The biggest single-benchmark swing is SciCode: 38.4% for GLM-4.6 and 58.9% for Step 5 Preview.
  • GLM-4.6 is cheaper at $0.60 / $2.20 per million input/output tokens, against $1 / $2.70 for Step 5 Preview.
  • Step 5 Preview accepts more context: 1.02M tokens versus 205K.
  • GLM-4.6 has downloadable open weights; the other is API-only.

Side by side

GLM-4.6Step 5 Preview
ProviderZ.ai (Zhipu)StepFun
Noometry Index41.447.9
Released2025-09-302026-09-16
WeightsOpenProprietary
Context window205K1.02M
Max output131K66K
Input $ / M tokens$0.60$1
Output $ / M tokens$2.20$2.70
Results tracked2918

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Category by category

Coding Step 5 Preview leads

GLM-4.6: 40.1 (#148), Step 5 Preview: 51.8 (#36)

BenchmarkGLM-4.6Step 5 Preview
LMArena WebDev13401564
SciCode38.4%58.9%
LMArena Coding14491480
SWE-bench Verified (bash only)55.4%—
ALE-Bench340.82—

Agentic & Tool Use Not comparable

GLM-4.6: 32.3 (#66), Step 5 Preview: —

BenchmarkGLM-4.6Step 5 Preview
Terminal-Bench24.5%—
Berkeley Function Calling Leaderboard72.4%—

Reasoning Step 5 Preview leads

GLM-4.6: 23.7 (#172), Step 5 Preview: 40.0 (#57)

BenchmarkGLM-4.6Step 5 Preview
CritPt1.1%20.9%
LMArena Hard Prompts14401465
Kagi LLM Benchmark47.4%—

Math Step 5 Preview leads

GLM-4.6: 39.1 (#111), Step 5 Preview: 46.1 (#72)

BenchmarkGLM-4.6Step 5 Preview
LMArena Math14321470
ProofBench—42%
FrontierMath (Feb 2025 set)3.8%—
FrontierMath Tier 4 (v1)2.1%—

Knowledge Too close to call

GLM-4.6: 40.2 (#124), Step 5 Preview: 41.2 (#112)

BenchmarkGLM-4.6Step 5 Preview
LMArena Expert14311470
Vectara Hallucination Rate9.5%—

Multimodal Not comparable

GLM-4.6: —, Step 5 Preview: 41.0 (#41)

BenchmarkGLM-4.6Step 5 Preview
LMArena Vision—1267

Multilingual Too close to call

GLM-4.6: 53.5 (#66), Step 5 Preview: 53.8 (#54)

BenchmarkGLM-4.6Step 5 Preview
LMArena Non-English14261432
LMArena Chinese14991519
LMArena Russian14191436
LMArena Spanish14361439
LMArena French1459—
LMArena German1447—
LMArena Japanese1393—
LMArena Korean1400—

Instruction Following Step 5 Preview leads

GLM-4.6: 74.3 (#98), Step 5 Preview: 76.0 (#50)

BenchmarkGLM-4.6Step 5 Preview
LMArena Instruction Following14101444

Long Context Step 5 Preview leads

GLM-4.6: 43.4 (#94), Step 5 Preview: 44.5 (#64)

BenchmarkGLM-4.6Step 5 Preview
LMArena Longer Query14221455

Writing & Preference Step 5 Preview leads

GLM-4.6: 61.1 (#90), Step 5 Preview: 62.8 (#71)

BenchmarkGLM-4.6Step 5 Preview
LMArena Text14401442
LMArena Creative Writing14111410
LMArena Multi-Turn14271447
EQ-Bench Creative Writing1411—

Frequently asked questions

Is GLM-4.6 better than Step 5 Preview?

Step 5 Preview is the stronger model overall, scoring 47.9 to 41.4 on the Noometry Index.

Which is cheaper, GLM-4.6 or Step 5 Preview?

GLM-4.6 is cheaper. It lists at $0.60 per million input tokens and $2.20 per million output tokens; Step 5 Preview lists at $1 and $2.70.

Is GLM-4.6 or Step 5 Preview better for coding?

Step 5 Preview scores higher on coding benchmarks: 51.8 versus 40.1 in the Noometry coding category.

Which has the bigger context window?

Step 5 Preview does, with 1.02M tokens against 205K.

How many benchmarks do GLM-4.6 and Step 5 Preview share?

16 benchmarks have published results for both models. GLM-4.6 has 29 scored results on Noometry and Step 5 Preview has 18.

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