Noometry

Model comparison

GPT-5.5 Instant vs Llama 3-8B

GPT-5.5 Instant is the stronger model overall, scoring 42.7 to 25.5 on the Noometry Index.

Last verified . 21 shared benchmarks.

GPT-5.5 Instant OpenAI

42.7

Rank #110 Confirmed

Llama 3-8B Meta

25.5

Rank #344 Confirmed

Summary

  • They share 21 benchmarks with published results for both. GPT-5.5 Instant scores higher in 8 categories and Llama 3-8B in 0 categories; 8 gaps are clear of the uncertainty.
  • The widest gap is in knowledge, where GPT-5.5 Instant leads 48.9 to 7.8.
  • The biggest single-benchmark swing is OTIS Mock AIME 2024-2025: 68.1% for GPT-5.5 Instant and 1.9% for Llama 3-8B.
  • Llama 3-8B has downloadable open weights; the other is API-only.

Side by side

GPT-5.5 InstantLlama 3-8B
ProviderOpenAIMeta
Noometry Index42.725.5
Released2026-05-052024-04-18
WeightsProprietaryOpen
Context window——
Max output——
Input $ / M tokens——
Output $ / M tokens——
Results tracked2734

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Category by category

Coding GPT-5.5 Instant leads

GPT-5.5 Instant: 44.3 (#74), Llama 3-8B: 31.0 (#289)

BenchmarkGPT-5.5 InstantLlama 3-8B
LMArena Coding14331152
SciCode48.6%—
BigCodeBench Instruct—31.9%
BigCodeBench Complete—36.9%
HumanEval+—56.7%
MBPP+—54.8%

Reasoning GPT-5.5 Instant leads

GPT-5.5 Instant: 24.9 (#155), Llama 3-8B: 14.3 (#326)

BenchmarkGPT-5.5 InstantLlama 3-8B
Chess Puzzles12%0%
LMArena Hard Prompts14261133
Epoch Capabilities Index142.52116.45
CritPt0%—
DTBench—43.9%
Adversarial NLI—57.3%
ForecastBench—58.6
WinoGrande—75.7%

Math GPT-5.5 Instant leads

GPT-5.5 Instant: 26.5 (#259), Llama 3-8B: 8.8 (#323)

BenchmarkGPT-5.5 InstantLlama 3-8B
OTIS Mock AIME 2024-202568.1%1.9%
LMArena Math14201151
FrontierMath (Tiers 1-3)26.3%—
FrontierMath Tier 42.4%—
MATH Level 5—6.1%

Knowledge GPT-5.5 Instant leads

GPT-5.5 Instant: 48.9 (#74), Llama 3-8B: 7.8 (#308)

BenchmarkGPT-5.5 InstantLlama 3-8B
GPQA Diamond82.5%26.1%
LMArena Expert14091113
ARC (AI2) Challenge—82.8%
MMLU—68.8%
OpenBookQA—82.6%
TriviaQA—67.7%

Multimodal Not comparable

GPT-5.5 Instant: 40.0 (#52), Llama 3-8B: —

BenchmarkGPT-5.5 InstantLlama 3-8B
LMArena Vision1250—
LMArena Document1403—

Multilingual GPT-5.5 Instant leads

GPT-5.5 Instant: 52.8 (#80), Llama 3-8B: 30.8 (#261)

BenchmarkGPT-5.5 InstantLlama 3-8B
LMArena Non-English14171098
LMArena Chinese14561076
LMArena French14281159
LMArena German14111104
LMArena Japanese1408967
LMArena Korean13921004
LMArena Russian14311109
LMArena Spanish14291173

Instruction Following GPT-5.5 Instant leads

GPT-5.5 Instant: 74.2 (#100), Llama 3-8B: 58.4 (#260)

BenchmarkGPT-5.5 InstantLlama 3-8B
LMArena Instruction Following14061127

Long Context GPT-5.5 Instant leads

GPT-5.5 Instant: 43.4 (#96), Llama 3-8B: 34.2 (#251)

BenchmarkGPT-5.5 InstantLlama 3-8B
LMArena Longer Query14221128

Writing & Preference GPT-5.5 Instant leads

GPT-5.5 Instant: 61.8 (#85), Llama 3-8B: 37.5 (#256)

BenchmarkGPT-5.5 InstantLlama 3-8B
LMArena Text14191166
LMArena Creative Writing14191150
LMArena Multi-Turn14331152

Frequently asked questions

Is GPT-5.5 Instant better than Llama 3-8B?

GPT-5.5 Instant is the stronger model overall, scoring 42.7 to 25.5 on the Noometry Index.

Is GPT-5.5 Instant or Llama 3-8B better for coding?

GPT-5.5 Instant scores higher on coding benchmarks: 44.3 versus 31.0 in the Noometry coding category.

How many benchmarks do GPT-5.5 Instant and Llama 3-8B share?

21 benchmarks have published results for both models. GPT-5.5 Instant has 27 scored results on Noometry and Llama 3-8B has 34.

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