Noometry

Model comparison

Seed 2.0 Pro vs GLM-5.3-Flash

GLM-5.3-Flash is the stronger model overall, scoring 51.8 to 43.2 on the Noometry Index.

Last verified . 18 shared benchmarks.

Seed 2.0 Pro ByteDance Seed

43.2

Rank #96 Confirmed

GLM-5.3-Flash Z.ai (Zhipu)

51.8

Rank #41 Confirmed

Summary

  • They share 18 benchmarks with published results for both. Seed 2.0 Pro scores higher in 0 categories and GLM-5.3-Flash in 9 categories; 9 gaps are clear of the uncertainty.
  • The widest gap is in reasoning, where GLM-5.3-Flash leads 48.0 to 24.1.
  • GLM-5.3-Flash is cheaper at $0.15 / $0.50 per million input/output tokens, against $0.50 / $3 for Seed 2.0 Pro.
  • GLM-5.3-Flash accepts more context: 1M tokens versus 256K.
  • GLM-5.3-Flash has downloadable open weights; the other is API-only.

Side by side

Seed 2.0 ProGLM-5.3-Flash
ProviderByteDance SeedZ.ai (Zhipu)
Noometry Index43.251.8
Released2026-02-142026-08-20
WeightsProprietaryOpen
Context window256K1M
Max output128K131K
Input $ / M tokens$0.50$0.15
Output $ / M tokens$3$0.50
Results tracked2040

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Category by category

Coding GLM-5.3-Flash leads

Seed 2.0 Pro: 43.5 (#86), GLM-5.3-Flash: 53.1 (#31)

BenchmarkSeed 2.0 ProGLM-5.3-Flash
LMArena Coding14721508
DeepSWE—63.4%
FrontierCode—31.8%
CursorBench—36.8%
LMArena WebDev—1609
FrontierSWE—18.1%
SciCode—51.6%
ALE-Bench—303.55

Agentic & Tool Use Not comparable

Seed 2.0 Pro: —, GLM-5.3-Flash: 34.2 (#47)

BenchmarkSeed 2.0 ProGLM-5.3-Flash
APEX-Agents—52.8%
GDP.pdf—14%

Reasoning GLM-5.3-Flash leads

Seed 2.0 Pro: 24.1 (#165), GLM-5.3-Flash: 48.0 (#42)

BenchmarkSeed 2.0 ProGLM-5.3-Flash
LMArena Hard Prompts14531491
ARC-AGI-2—65.8%
NYT Connections (extended)28.4%—
ARC-AGI-1—91%
CritPt—15.4%
Chess Puzzles—14%
Thematic Generalization57.1%—
Mystery Game Puzzles—8%
Surface Evolver Bench—52.5%
Bench to the Future 3—0.15
Epoch Capabilities Index—151.88

Math GLM-5.3-Flash leads

Seed 2.0 Pro: 39.3 (#108), GLM-5.3-Flash: 53.3 (#47)

BenchmarkSeed 2.0 ProGLM-5.3-Flash
LMArena Math14391500
FrontierMath (Tiers 1-3)—55.8%
FrontierMath Tier 4—17.1%
OTIS Mock AIME 2024-2025—93.9%
ProofBench—21%

Knowledge GLM-5.3-Flash leads

Seed 2.0 Pro: 40.2 (#122), GLM-5.3-Flash: 58.4 (#36)

BenchmarkSeed 2.0 ProGLM-5.3-Flash
LMArena Expert14401513
GPQA Diamond—90.2%

Multimodal GLM-5.3-Flash leads

Seed 2.0 Pro: 41.5 (#35), GLM-5.3-Flash: 42.8 (#27)

BenchmarkSeed 2.0 ProGLM-5.3-Flash
LMArena Vision12741296

Multilingual GLM-5.3-Flash leads

Seed 2.0 Pro: 54.5 (#39), GLM-5.3-Flash: 56.0 (#25)

BenchmarkSeed 2.0 ProGLM-5.3-Flash
LMArena Non-English14411462
LMArena Chinese14891527
LMArena French14711496
LMArena German14421470
LMArena Japanese14081429
LMArena Korean14111446
LMArena Russian14491469
LMArena Spanish14601471

Instruction Following GLM-5.3-Flash leads

Seed 2.0 Pro: 74.5 (#91), GLM-5.3-Flash: 77.5 (#20)

BenchmarkSeed 2.0 ProGLM-5.3-Flash
LMArena Instruction Following14141478

Long Context GLM-5.3-Flash leads

Seed 2.0 Pro: 43.6 (#90), GLM-5.3-Flash: 45.4 (#39)

BenchmarkSeed 2.0 ProGLM-5.3-Flash
LMArena Longer Query14281482

Writing & Preference GLM-5.3-Flash leads

Seed 2.0 Pro: 62.9 (#69), GLM-5.3-Flash: 65.3 (#50)

BenchmarkSeed 2.0 ProGLM-5.3-Flash
LMArena Text14481471
LMArena Creative Writing14061442
LMArena Multi-Turn14411467

Frequently asked questions

Is Seed 2.0 Pro better than GLM-5.3-Flash?

GLM-5.3-Flash is the stronger model overall, scoring 51.8 to 43.2 on the Noometry Index.

Which is cheaper, Seed 2.0 Pro or GLM-5.3-Flash?

GLM-5.3-Flash is cheaper. It lists at $0.15 per million input tokens and $0.50 per million output tokens; Seed 2.0 Pro lists at $0.50 and $3.

Is Seed 2.0 Pro or GLM-5.3-Flash better for coding?

GLM-5.3-Flash scores higher on coding benchmarks: 53.1 versus 43.5 in the Noometry coding category.

Which has the bigger context window?

GLM-5.3-Flash does, with 1M tokens against 256K.

How many benchmarks do Seed 2.0 Pro and GLM-5.3-Flash share?

18 benchmarks have published results for both models. Seed 2.0 Pro has 20 scored results on Noometry and GLM-5.3-Flash has 40.

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