Noometry

Model comparison

Gemma 4 26B A4B IT vs GPT-5.5 Instant

Gemma 4 26B A4B IT and GPT-5.5 Instant score almost the same on the Noometry Index (43.5 vs 42.7), so choose on price, context window or the category you care about most.

Last verified . 21 shared benchmarks.

Gemma 4 26B A4B IT Google

43.5

Rank #92 Confirmed

GPT-5.5 Instant OpenAI

42.7

Rank #110 Confirmed

Summary

  • They share 21 benchmarks with published results for both. Gemma 4 26B A4B IT scores higher in 5 categories and GPT-5.5 Instant in 4 categories; 5 gaps are clear of the uncertainty.
  • The widest gap is in math, where Gemma 4 26B A4B IT leads 47.6 to 26.5.
  • The biggest single-benchmark swing is OTIS Mock AIME 2024-2025: 82.2% for Gemma 4 26B A4B IT and 68.1% for GPT-5.5 Instant.
  • Gemma 4 26B A4B IT has downloadable open weights; the other is API-only.

Side by side

Gemma 4 26B A4B ITGPT-5.5 Instant
ProviderGoogleOpenAI
Noometry Index43.542.7
Released2026-04-022026-05-05
WeightsOpenProprietary
Context window262K—
Max output33K—
Input $ / M tokens$0.0675—
Output $ / M tokens$0.23—
Results tracked2827

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Category by category

Coding GPT-5.5 Instant leads

Gemma 4 26B A4B IT: 39.0 (#164), GPT-5.5 Instant: 44.3 (#74)

BenchmarkGemma 4 26B A4B ITGPT-5.5 Instant
SciCode40%48.6%
LMArena Coding14471433
LMArena WebDev1359—
WeirdML35.2%—
ALE-Bench927.17—

Reasoning GPT-5.5 Instant leads

Gemma 4 26B A4B IT: 21.8 (#213), GPT-5.5 Instant: 24.9 (#155)

BenchmarkGemma 4 26B A4B ITGPT-5.5 Instant
CritPt0%0%
Chess Puzzles6%12%
LMArena Hard Prompts14391426
Epoch Capabilities Index141.85142.52
DTBench74.9%—
LMCA29.7%—

Math Gemma 4 26B A4B IT leads

Gemma 4 26B A4B IT: 47.6 (#67), GPT-5.5 Instant: 26.5 (#259)

BenchmarkGemma 4 26B A4B ITGPT-5.5 Instant
OTIS Mock AIME 2024-202582.2%68.1%
LMArena Math14701420
FrontierMath (Tiers 1-3)—26.3%
FrontierMath Tier 4—2.4%

Knowledge GPT-5.5 Instant leads

Gemma 4 26B A4B IT: 45.7 (#85), GPT-5.5 Instant: 48.9 (#74)

BenchmarkGemma 4 26B A4B ITGPT-5.5 Instant
GPQA Diamond73.2%82.5%
LMArena Expert14471409
Vectara Hallucination Rate5.2%—

Multimodal Too close to call

Gemma 4 26B A4B IT: 40.6 (#46), GPT-5.5 Instant: 40.0 (#52)

BenchmarkGemma 4 26B A4B ITGPT-5.5 Instant
LMArena Vision12601250
LMArena Document—1403

Multilingual Too close to call

Gemma 4 26B A4B IT: 53.1 (#71), GPT-5.5 Instant: 52.8 (#80)

BenchmarkGemma 4 26B A4B ITGPT-5.5 Instant
LMArena Non-English14211417
LMArena Chinese14951456
LMArena French14601428
LMArena Russian14341431
LMArena Spanish14171429
LMArena German—1411
LMArena Japanese—1408
LMArena Korean—1392

Instruction Following Too close to call

Gemma 4 26B A4B IT: 74.8 (#82), GPT-5.5 Instant: 74.2 (#100)

BenchmarkGemma 4 26B A4B ITGPT-5.5 Instant
LMArena Instruction Following14201406

Long Context Too close to call

Gemma 4 26B A4B IT: 43.6 (#91), GPT-5.5 Instant: 43.4 (#96)

BenchmarkGemma 4 26B A4B ITGPT-5.5 Instant
LMArena Longer Query14281422

Writing & Preference GPT-5.5 Instant leads

Gemma 4 26B A4B IT: 58.6 (#115), GPT-5.5 Instant: 61.8 (#85)

BenchmarkGemma 4 26B A4B ITGPT-5.5 Instant
LMArena Text14341419
LMArena Creative Writing14021419
LMArena Multi-Turn14411433
EQ-Bench Creative Writing1305—

Frequently asked questions

Is Gemma 4 26B A4B IT better than GPT-5.5 Instant?

Gemma 4 26B A4B IT and GPT-5.5 Instant score almost the same on the Noometry Index (43.5 vs 42.7), so choose on price, context window or the category you care about most.

Is Gemma 4 26B A4B IT or GPT-5.5 Instant better for coding?

GPT-5.5 Instant scores higher on coding benchmarks: 44.3 versus 39.0 in the Noometry coding category.

How many benchmarks do Gemma 4 26B A4B IT and GPT-5.5 Instant share?

21 benchmarks have published results for both models. Gemma 4 26B A4B IT has 28 scored results on Noometry and GPT-5.5 Instant has 27.

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