Noometry

Model comparison

GPT-4.5 vs Inkling-Small

Inkling-Small is the stronger model overall, scoring 46.5 to 37.2 on the Noometry Index.

Last verified . 23 shared benchmarks.

GPT-4.5 OpenAI

37.2

Rank #208 Confirmed

Inkling-Small Thinking Machines Lab

46.5

Rank #63 Confirmed

Summary

  • They share 23 benchmarks with published results for both. GPT-4.5 scores higher in 1 category and Inkling-Small in 8 categories; 8 gaps are clear of the uncertainty.
  • The widest gap is in reasoning, where Inkling-Small leads 38.6 to 13.9.
  • The biggest single-benchmark swing is ARC-AGI-1: 10.3% for GPT-4.5 and 84% for Inkling-Small.
  • Inkling-Small has downloadable open weights; the other is API-only.

Side by side

GPT-4.5Inkling-Small
ProviderOpenAIThinking Machines Lab
Noometry Index37.246.5
Released2025-02-272026-07-15
WeightsProprietaryOpen
Context window—524K
Max output—1.05M
Input $ / M tokens—$0.45
Output $ / M tokens—$1.20
Results tracked4233

Sponsored placements are available on pages like this one. Advertise on Noometry

Category by category

Coding Inkling-Small leads

GPT-4.5: 42.2 (#109), Inkling-Small: 43.6 (#85)

BenchmarkGPT-4.5Inkling-Small
LMArena Coding13961451
Aider Polyglot44.9%—
LMArena WebDev—1409
SciCode—48.7%
WeirdML39.4%—
LiveBench Coding75.2%—

Agentic & Tool Use Not comparable

GPT-4.5: 27.9 (#97), Inkling-Small: —

BenchmarkGPT-4.5Inkling-Small
Cybench17.5%—

Reasoning Inkling-Small leads

GPT-4.5: 13.9 (#330), Inkling-Small: 38.6 (#63)

BenchmarkGPT-4.5Inkling-Small
ARC-AGI-20.8%40.1%
ARC-AGI-110.3%84%
LMArena Hard Prompts14031423
Epoch Capabilities Index136.74150.15
SimpleBench34.5%—
CritPt—8.3%
Chess Puzzles—18%
EnigmaEval3.2%—
LiveBench Reasoning71.1%—
Mystery Game Puzzles—6%
LiveBench Data Analysis64.3%—
ForecastBench61.7—
LiveBench69%—

Math Inkling-Small leads

GPT-4.5: 32.6 (#211), Inkling-Small: 45.1 (#77)

BenchmarkGPT-4.5Inkling-Small
OTIS Mock AIME 2024-202537.8%90%
LMArena Math14121459
FrontierMath (Tiers 1-3)—46.3%
FrontierMath Tier 4—17.1%
ProofBench—6%
LiveBench Math69.3%—
MATH Level 578.6%—

Knowledge Inkling-Small leads

GPT-4.5: 32.5 (#211), Inkling-Small: 48.2 (#77)

BenchmarkGPT-4.5Inkling-Small
GPQA Diamond68.7%88.5%
LMArena Expert13941442
Humanity's Last Exam5.4%—
SimpleQA Verified—19.1%
Confabulations13.6%—

Multimodal Inkling-Small leads

GPT-4.5: 37.6 (#71), Inkling-Small: 39.1 (#62)

BenchmarkGPT-4.5Inkling-Small
LMArena Vision11951235
VPCT45%—

Multilingual Too close to call

GPT-4.5: 52.5 (#83), Inkling-Small: 51.7 (#104)

BenchmarkGPT-4.5Inkling-Small
LMArena Non-English14131402
LMArena Chinese14211465
LMArena French14181436
LMArena German14571405
LMArena Japanese14161405
LMArena Korean13921363
LMArena Russian14191391
LMArena Spanish—1428

Instruction Following Inkling-Small leads

GPT-4.5: 72.6 (#134), Inkling-Small: 73.8 (#114)

BenchmarkGPT-4.5Inkling-Small
LMArena Instruction Following14041399
LiveBench Instruction Following72.3%—

Long Context Inkling-Small leads

GPT-4.5: 40.4 (#155), Inkling-Small: 42.7 (#118)

BenchmarkGPT-4.5Inkling-Small
LMArena Longer Query14061401
Fiction.LiveBench63.9%—

Writing & Preference Inkling-Small leads

GPT-4.5: 56.9 (#134), Inkling-Small: 59.6 (#107)

BenchmarkGPT-4.5Inkling-Small
LMArena Text14171414
LMArena Creative Writing13941331
EQ-Bench Creative Writing12581491
LMArena Multi-Turn14441418
Short-Story Creative Writing75.6%—
LiveBench Language61.5%—

Frequently asked questions

Is GPT-4.5 better than Inkling-Small?

Inkling-Small is the stronger model overall, scoring 46.5 to 37.2 on the Noometry Index.

Is GPT-4.5 or Inkling-Small better for coding?

Inkling-Small scores higher on coding benchmarks: 43.6 versus 42.2 in the Noometry coding category.

How many benchmarks do GPT-4.5 and Inkling-Small share?

23 benchmarks have published results for both models. GPT-4.5 has 42 scored results on Noometry and Inkling-Small has 33.

Related comparisons

Go deeper