Noometry

Model comparison

Gemma 2 9B vs GPT-5.5 Instant

GPT-5.5 Instant is the stronger model overall, scoring 42.5 to 25.7 on the Noometry Index.

Last verified . 20 shared benchmarks.

Gemma 2 9B Google

25.7

Rank #334 Confirmed

GPT-5.5 Instant OpenAI

42.5

Rank #99 Confirmed

Summary

  • They share 20 benchmarks with published results for both. Gemma 2 9B scores higher in 0 categories and GPT-5.5 Instant in 8 categories; 8 gaps are clear of the uncertainty.
  • The widest gap is in knowledge, where GPT-5.5 Instant leads 48.9 to 9.7.
  • The biggest single-benchmark swing is OTIS Mock AIME 2024-2025: 0.6% for Gemma 2 9B and 68.1% for GPT-5.5 Instant.
  • Gemma 2 9B has downloadable open weights; the other is API-only.

Side by side

Gemma 2 9BGPT-5.5 Instant
ProviderGoogleOpenAI
Noometry Index25.742.5
Released2024-06-242026-05-05
WeightsOpenProprietary
Context window——
Max output——
Input $ / M tokens——
Output $ / M tokens——
Results tracked3527

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Category by category

Coding GPT-5.5 Instant leads

Gemma 2 9B: 29.0 (#299), GPT-5.5 Instant: 43.7 (#73)

BenchmarkGemma 2 9BGPT-5.5 Instant
LMArena Coding11741433
SciCode—48.6%
BigCodeBench Instruct34.7%—
LiveBench Coding22.5%—
BigCodeBench Complete40.6%—

Reasoning GPT-5.5 Instant leads

Gemma 2 9B: 15.3 (#306), GPT-5.5 Instant: 24.2 (#149)

BenchmarkGemma 2 9BGPT-5.5 Instant
LMArena Hard Prompts11721426
Epoch Capabilities Index119.78142.48
CritPt—0%
Chess Puzzles—12%
LiveBench Reasoning15.2%—
LiveBench Data Analysis36.4%—
LiveBench28.7%—
PIQA83.7%—

Math GPT-5.5 Instant leads

Gemma 2 9B: 9.3 (#312), GPT-5.5 Instant: 26.1 (#241)

BenchmarkGemma 2 9BGPT-5.5 Instant
OTIS Mock AIME 2024-20250.6%68.1%
LMArena Math11831420
FrontierMath (Tiers 1-3)—26.3%
FrontierMath Tier 4—2.4%
LiveBench Math19.8%—
MATH Level 521%—
GSM8K84.9%—

Knowledge GPT-5.5 Instant leads

Gemma 2 9B: 9.7 (#300), GPT-5.5 Instant: 48.9 (#68)

BenchmarkGemma 2 9BGPT-5.5 Instant
GPQA Diamond27.5%82.5%
LMArena Expert11471409
BoolQ85.7%—
MMLU72.1%—

Multimodal Not comparable

Gemma 2 9B: —, GPT-5.5 Instant: 39.3 (#48)

BenchmarkGemma 2 9BGPT-5.5 Instant
LMArena Vision—1250
LMArena Document—1403

Multilingual GPT-5.5 Instant leads

Gemma 2 9B: 36.8 (#233), GPT-5.5 Instant: 53.0 (#76)

BenchmarkGemma 2 9BGPT-5.5 Instant
LMArena Non-English11881417
LMArena Chinese11851457
LMArena French11891428
LMArena German11861410
LMArena Japanese11441408
LMArena Korean11371393
LMArena Russian12001430
LMArena Spanish12001430

Instruction Following GPT-5.5 Instant leads

Gemma 2 9B: 57.8 (#264), GPT-5.5 Instant: 74.4 (#94)

BenchmarkGemma 2 9BGPT-5.5 Instant
LMArena Instruction Following11781407
LiveBench Instruction Following52.6%—

Long Context GPT-5.5 Instant leads

Gemma 2 9B: 36.3 (#228), GPT-5.5 Instant: 43.4 (#92)

BenchmarkGemma 2 9BGPT-5.5 Instant
LMArena Longer Query11971422

Writing & Preference GPT-5.5 Instant leads

Gemma 2 9B: 32.3 (#276), GPT-5.5 Instant: 62.0 (#81)

BenchmarkGemma 2 9BGPT-5.5 Instant
LMArena Text12071419
LMArena Creative Writing12061420
LMArena Multi-Turn11931434
EQ-Bench Creative Writing841—
LiveBench Language25.5%—

Frequently asked questions

Is Gemma 2 9B better than GPT-5.5 Instant?

GPT-5.5 Instant is the stronger model overall, scoring 42.5 to 25.7 on the Noometry Index.

Is Gemma 2 9B or GPT-5.5 Instant better for coding?

GPT-5.5 Instant scores higher on coding benchmarks: 43.7 versus 29.0 in the Noometry coding category.

How many benchmarks do Gemma 2 9B and GPT-5.5 Instant share?

20 benchmarks have published results for both models. Gemma 2 9B has 35 scored results on Noometry and GPT-5.5 Instant has 27.

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