Noometry

Model comparison

Seed 2.0 Pro vs GLM-4.5

Seed 2.0 Pro is the stronger model overall, scoring 43.2 to 42.0 on the Noometry Index.

Last verified . 17 shared benchmarks.

Seed 2.0 Pro ByteDance Seed

43.2

Rank #96 Confirmed

GLM-4.5 Z.ai (Zhipu)

42.0

Rank #122 Confirmed

Summary

  • They share 17 benchmarks with published results for both. Seed 2.0 Pro scores higher in 7 categories and GLM-4.5 in 1 category; 6 gaps are clear of the uncertainty.
  • The widest gap is in long context, where Seed 2.0 Pro leads 43.6 to 38.2.
  • GLM-4.5 is cheaper at $0.60 / $2.20 per million input/output tokens, against $0.50 / $3 for Seed 2.0 Pro.
  • Seed 2.0 Pro accepts more context: 256K tokens versus 131K.
  • GLM-4.5 has downloadable open weights; the other is API-only.

Side by side

Seed 2.0 ProGLM-4.5
ProviderByteDance SeedZ.ai (Zhipu)
Noometry Index43.242.0
Released2026-02-142025-07-27
WeightsProprietaryOpen
Context window256K131K
Max output128K98K
Input $ / M tokens$0.50$0.60
Output $ / M tokens$3$2.20
Results tracked2027

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Category by category

Coding Seed 2.0 Pro leads

Seed 2.0 Pro: 43.5 (#86), GLM-4.5: 41.4 (#125)

BenchmarkSeed 2.0 ProGLM-4.5
LMArena Coding14721434
SWE-bench Verified (bash only)—54.2%
WeirdML—40.6%
ALE-Bench—344.82
AlgoTune—1.52

Reasoning GLM-4.5 leads

Seed 2.0 Pro: 24.1 (#165), GLM-4.5: 28.6 (#100)

BenchmarkSeed 2.0 ProGLM-4.5
LMArena Hard Prompts14531429
Kagi LLM Benchmark—57.9%
NYT Connections (extended)28.4%—
Thematic Generalization57.1%—

Math Too close to call

Seed 2.0 Pro: 39.3 (#108), GLM-4.5: 39.0 (#116)

BenchmarkSeed 2.0 ProGLM-4.5
LMArena Math14391427

Knowledge Seed 2.0 Pro leads

Seed 2.0 Pro: 40.2 (#122), GLM-4.5: 35.9 (#179)

BenchmarkSeed 2.0 ProGLM-4.5
LMArena Expert14401433
Humanity's Last Exam—8.3%
Confabulations—11.3%

Multimodal Not comparable

Seed 2.0 Pro: 41.5 (#35), GLM-4.5: —

BenchmarkSeed 2.0 ProGLM-4.5
LMArena Vision1274—

Multilingual Seed 2.0 Pro leads

Seed 2.0 Pro: 54.5 (#39), GLM-4.5: 52.8 (#77)

BenchmarkSeed 2.0 ProGLM-4.5
LMArena Non-English14411417
LMArena Chinese14891465
LMArena French14711418
LMArena German14421407
LMArena Japanese14081415
LMArena Korean14111380
LMArena Russian14491414
LMArena Spanish14601454

Instruction Following Too close to call

Seed 2.0 Pro: 74.5 (#91), GLM-4.5: 74.1 (#104)

BenchmarkSeed 2.0 ProGLM-4.5
LMArena Instruction Following14141404

Long Context Seed 2.0 Pro leads

Seed 2.0 Pro: 43.6 (#90), GLM-4.5: 38.2 (#201)

BenchmarkSeed 2.0 ProGLM-4.5
LMArena Longer Query14281412
Fiction.LiveBench—58.3%

Writing & Preference Seed 2.0 Pro leads

Seed 2.0 Pro: 62.9 (#69), GLM-4.5: 57.5 (#127)

BenchmarkSeed 2.0 ProGLM-4.5
LMArena Text14481430
LMArena Creative Writing14061395
LMArena Multi-Turn14411415
Short-Story Creative Writing—73.4%
EQ-Bench Creative Writing—1343

Frequently asked questions

Is Seed 2.0 Pro better than GLM-4.5?

Seed 2.0 Pro is the stronger model overall, scoring 43.2 to 42.0 on the Noometry Index.

Which is cheaper, Seed 2.0 Pro or GLM-4.5?

GLM-4.5 is cheaper. It lists at $0.60 per million input tokens and $2.20 per million output tokens; Seed 2.0 Pro lists at $0.50 and $3.

Is Seed 2.0 Pro or GLM-4.5 better for coding?

Seed 2.0 Pro scores higher on coding benchmarks: 43.5 versus 41.4 in the Noometry coding category.

Which has the bigger context window?

Seed 2.0 Pro does, with 256K tokens against 131K.

How many benchmarks do Seed 2.0 Pro and GLM-4.5 share?

17 benchmarks have published results for both models. Seed 2.0 Pro has 20 scored results on Noometry and GLM-4.5 has 27.

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