Noometry

Model comparison

GPT-5.5 Instant vs Llama 4 Scout

GPT-5.5 Instant is the stronger model overall, scoring 42.7 to 27.7 on the Noometry Index.

Last verified . 23 shared benchmarks.

GPT-5.5 Instant OpenAI

42.7

Rank #110 Confirmed

Llama 4 Scout Meta

27.7

Rank #330 Confirmed

Summary

  • They share 23 benchmarks with published results for both. GPT-5.5 Instant scores higher in 9 categories and Llama 4 Scout in 0 categories; 9 gaps are clear of the uncertainty.
  • The widest gap is in writing & preference, where GPT-5.5 Instant leads 61.8 to 37.0.
  • The biggest single-benchmark swing is OTIS Mock AIME 2024-2025: 68.1% for GPT-5.5 Instant and 7.8% for Llama 4 Scout.
  • Llama 4 Scout has downloadable open weights; the other is API-only.

Side by side

GPT-5.5 InstantLlama 4 Scout
ProviderOpenAIMeta
Noometry Index42.727.7
Released2026-05-052025-04-05
WeightsProprietaryOpen
Context window—128K
Max output—4K
Input $ / M tokens—$0.10
Output $ / M tokens—$0.30
Results tracked2743

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Category by category

Coding GPT-5.5 Instant leads

GPT-5.5 Instant: 44.3 (#74), Llama 4 Scout: 20.2 (#339)

BenchmarkGPT-5.5 InstantLlama 4 Scout
SciCode48.6%17%
LMArena Coding14331286
SWE-bench Verified (bash only)—9.1%
BigCodeBench Complete—43.1%

Agentic & Tool Use Not comparable

GPT-5.5 Instant: —, Llama 4 Scout: 24.6 (#119)

BenchmarkGPT-5.5 InstantLlama 4 Scout
Berkeley Function Calling Leaderboard—28.1%

Reasoning GPT-5.5 Instant leads

GPT-5.5 Instant: 24.9 (#155), Llama 4 Scout: 9.1 (#345)

BenchmarkGPT-5.5 InstantLlama 4 Scout
CritPt0%0%
LMArena Hard Prompts14261266
Epoch Capabilities Index142.52129.64
ARC-AGI-2—0%
Kagi LLM Benchmark—36.9%
ARC-AGI-1—0.5%
Chess Puzzles12%—
DTBench—57.9%
LMCA—12%
ForecastBench—57.5

Math GPT-5.5 Instant leads

GPT-5.5 Instant: 26.5 (#259), Llama 4 Scout: 19.6 (#286)

BenchmarkGPT-5.5 InstantLlama 4 Scout
OTIS Mock AIME 2024-202568.1%7.8%
LMArena Math14201287
FrontierMath (Tiers 1-3)26.3%—
FrontierMath Tier 42.4%—
Omni-MATH—37.3%
MATH Level 5—62.3%
FrontierMath (Feb 2025 set)—0%

Knowledge GPT-5.5 Instant leads

GPT-5.5 Instant: 48.9 (#74), Llama 4 Scout: 31.9 (#217)

BenchmarkGPT-5.5 InstantLlama 4 Scout
GPQA Diamond82.5%51.8%
LMArena Expert14091235
MMLU-Pro—74.2%
Vectara Hallucination Rate—7.7%
GPQA (HELM)—50.7%

Multimodal GPT-5.5 Instant leads

GPT-5.5 Instant: 40.0 (#52), Llama 4 Scout: 32.2 (#102)

BenchmarkGPT-5.5 InstantLlama 4 Scout
LMArena Vision12501118
LMArena Document1403—
SpatialViz-Bench—34.2%

Multilingual GPT-5.5 Instant leads

GPT-5.5 Instant: 52.8 (#80), Llama 4 Scout: 41.0 (#212)

BenchmarkGPT-5.5 InstantLlama 4 Scout
LMArena Non-English14171252
LMArena Chinese14561255
LMArena French14281282
LMArena German14111272
LMArena Japanese14081206
LMArena Korean13921207
LMArena Russian14311263
LMArena Spanish14291278

Instruction Following GPT-5.5 Instant leads

GPT-5.5 Instant: 74.2 (#100), Llama 4 Scout: 65.8 (#217)

BenchmarkGPT-5.5 InstantLlama 4 Scout
LMArena Instruction Following14061248
IFEval—81.8%

Long Context GPT-5.5 Instant leads

GPT-5.5 Instant: 43.4 (#96), Llama 4 Scout: 27.5 (#294)

BenchmarkGPT-5.5 InstantLlama 4 Scout
LMArena Longer Query14221265
Fiction.LiveBench—36%

Writing & Preference GPT-5.5 Instant leads

GPT-5.5 Instant: 61.8 (#85), Llama 4 Scout: 37.0 (#261)

BenchmarkGPT-5.5 InstantLlama 4 Scout
LMArena Text14191279
LMArena Creative Writing14191249
LMArena Multi-Turn14331280
EQ-Bench Creative Writing—783
WildBench—78%

Frequently asked questions

Is GPT-5.5 Instant better than Llama 4 Scout?

GPT-5.5 Instant is the stronger model overall, scoring 42.7 to 27.7 on the Noometry Index.

Is GPT-5.5 Instant or Llama 4 Scout better for coding?

GPT-5.5 Instant scores higher on coding benchmarks: 44.3 versus 20.2 in the Noometry coding category.

How many benchmarks do GPT-5.5 Instant and Llama 4 Scout share?

23 benchmarks have published results for both models. GPT-5.5 Instant has 27 scored results on Noometry and Llama 4 Scout has 43.

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