Noometry

Model comparison

Gemma 3 4B vs GPT-5.5 Pro

GPT-5.5 Pro is the stronger model overall, scoring 64.3 to 27.9 on the Noometry Index. Gemma 3 4B costs 1350× less per token, which makes it the better buy when GPT-5.5 Pro's lead doesn't matter for your workload.

Last verified . 6 shared benchmarks.

Gemma 3 4B Google

27.9

Rank #320 Confirmed

GPT-5.5 Pro OpenAI

64.3

Rank #7 Confirmed

Summary

  • They share 6 benchmarks with published results for both. Gemma 3 4B scores higher in 0 categories and GPT-5.5 Pro in 3 categories; 3 gaps are clear of the uncertainty.
  • The widest gap is in math, where GPT-5.5 Pro leads 83.8 to 15.8.
  • The biggest single-benchmark swing is OTIS Mock AIME 2024-2025: 7.5% for Gemma 3 4B and 100% for GPT-5.5 Pro.
  • Gemma 3 4B is cheaper at $0.04 / $0.08 per million input/output tokens, against $30 / $180 for GPT-5.5 Pro.
  • GPT-5.5 Pro accepts more context: 1.05M tokens versus 131K.
  • Gemma 3 4B has downloadable open weights; the other is API-only.

Side by side

Gemma 3 4BGPT-5.5 Pro
ProviderGoogleOpenAI
Noometry Index27.964.3
Released2025-03-122026-04-23
WeightsOpenProprietary
Context window131K1.05M
Max output4K128K
Input $ / M tokens$0.04$30
Output $ / M tokens$0.08$180
Results tracked2214

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Category by category

Coding Not comparable

Gemma 3 4B: 35.3 (#214), GPT-5.5 Pro: —

BenchmarkGemma 3 4BGPT-5.5 Pro
LMArena Coding1230—

Agentic & Tool Use Not comparable

Gemma 3 4B: 20.7 (#134), GPT-5.5 Pro: —

BenchmarkGemma 3 4BGPT-5.5 Pro
Berkeley Function Calling Leaderboard19.6%—

Reasoning GPT-5.5 Pro leads

Gemma 3 4B: 12.7 (#330), GPT-5.5 Pro: 73.6 (#7)

BenchmarkGemma 3 4BGPT-5.5 Pro
Chess Puzzles0%64%
DTBench50.9%96%
LMCA2.8%53.9%
Epoch Capabilities Index116.02162.45
ARC-AGI-2—84.6%
SimpleBench—76.9%
Kagi LLM Benchmark25.2%—
ARC-AGI-1—96.5%
CritPt—30.6%
LMArena Hard Prompts1253—

Math GPT-5.5 Pro leads

Gemma 3 4B: 15.8 (#286), GPT-5.5 Pro: 83.8 (#8)

BenchmarkGemma 3 4BGPT-5.5 Pro
OTIS Mock AIME 2024-20257.5%100%
FrontierMath (Tiers 1-3)—87.7%
FrontierMath Tier 4—78%
LMArena Math1239—
FrontierMath (Feb 2025 set)—52.4%
FrontierMath Tier 4 (v1)—39.6%

Knowledge GPT-5.5 Pro leads

Gemma 3 4B: 11.8 (#294), GPT-5.5 Pro: 64.2 (#17)

BenchmarkGemma 3 4BGPT-5.5 Pro
GPQA Diamond23.2%93.9%
Vectara Hallucination Rate6.4%—
LMArena Expert1223—

Multilingual Not comparable

Gemma 3 4B: 42.7 (#189), GPT-5.5 Pro: —

BenchmarkGemma 3 4BGPT-5.5 Pro
LMArena Non-English1273—
LMArena German1281—
LMArena Russian1294—

Instruction Following Not comparable

Gemma 3 4B: 65.4 (#219), GPT-5.5 Pro: —

BenchmarkGemma 3 4BGPT-5.5 Pro
LMArena Instruction Following1239—

Long Context Not comparable

Gemma 3 4B: 38.6 (#189), GPT-5.5 Pro: —

BenchmarkGemma 3 4BGPT-5.5 Pro
LMArena Longer Query1274—

Writing & Preference Not comparable

Gemma 3 4B: 42.2 (#234), GPT-5.5 Pro: —

BenchmarkGemma 3 4BGPT-5.5 Pro
LMArena Text1291—
LMArena Creative Writing1270—
EQ-Bench Creative Writing1068—
LMArena Multi-Turn1255—

Frequently asked questions

Is Gemma 3 4B better than GPT-5.5 Pro?

GPT-5.5 Pro is the stronger model overall, scoring 64.3 to 27.9 on the Noometry Index. Gemma 3 4B costs 1350× less per token, which makes it the better buy when GPT-5.5 Pro's lead doesn't matter for your workload.

Which is cheaper, Gemma 3 4B or GPT-5.5 Pro?

Gemma 3 4B is cheaper. It lists at $0.04 per million input tokens and $0.08 per million output tokens; GPT-5.5 Pro lists at $30 and $180.

Which has the bigger context window?

GPT-5.5 Pro does, with 1.05M tokens against 131K.

How many benchmarks do Gemma 3 4B and GPT-5.5 Pro share?

6 benchmarks have published results for both models. Gemma 3 4B has 22 scored results on Noometry and GPT-5.5 Pro has 14.

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