Noometry

Model comparison

GPT-5.5 Instant vs Inkling-Small

Inkling-Small is the stronger model overall, scoring 46.5 to 42.7 on the Noometry Index.

Last verified . 26 shared benchmarks.

GPT-5.5 Instant OpenAI

42.7

Rank #110 Confirmed

Inkling-Small Thinking Machines Lab

46.5

Rank #63 Confirmed

Summary

  • They share 26 benchmarks with published results for both. GPT-5.5 Instant scores higher in 7 categories and Inkling-Small in 2 categories; 4 gaps are clear of the uncertainty.
  • The widest gap is in math, where Inkling-Small leads 45.1 to 26.5.
  • The biggest single-benchmark swing is OTIS Mock AIME 2024-2025: 68.1% for GPT-5.5 Instant and 90% for Inkling-Small.
  • Inkling-Small has downloadable open weights; the other is API-only.

Side by side

GPT-5.5 InstantInkling-Small
ProviderOpenAIThinking Machines Lab
Noometry Index42.746.5
Released2026-05-052026-07-15
WeightsProprietaryOpen
Context window—524K
Max output—1.05M
Input $ / M tokens—$0.45
Output $ / M tokens—$1.20
Results tracked2733

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Category by category

Coding Too close to call

GPT-5.5 Instant: 44.3 (#74), Inkling-Small: 43.6 (#85)

BenchmarkGPT-5.5 InstantInkling-Small
SciCode48.6%48.7%
LMArena Coding14331451
LMArena WebDev—1409

Reasoning Inkling-Small leads

GPT-5.5 Instant: 24.9 (#155), Inkling-Small: 38.6 (#63)

BenchmarkGPT-5.5 InstantInkling-Small
CritPt0%8.3%
Chess Puzzles12%18%
LMArena Hard Prompts14261423
Epoch Capabilities Index142.52150.15
ARC-AGI-2—40.1%
ARC-AGI-1—84%
Mystery Game Puzzles—6%

Math Inkling-Small leads

GPT-5.5 Instant: 26.5 (#259), Inkling-Small: 45.1 (#77)

BenchmarkGPT-5.5 InstantInkling-Small
FrontierMath (Tiers 1-3)26.3%46.3%
FrontierMath Tier 42.4%17.1%
OTIS Mock AIME 2024-202568.1%90%
LMArena Math14201459
ProofBench—6%

Knowledge Too close to call

GPT-5.5 Instant: 48.9 (#74), Inkling-Small: 48.2 (#77)

BenchmarkGPT-5.5 InstantInkling-Small
GPQA Diamond82.5%88.5%
LMArena Expert14091442
SimpleQA Verified—19.1%

Multimodal Too close to call

GPT-5.5 Instant: 40.0 (#52), Inkling-Small: 39.1 (#62)

BenchmarkGPT-5.5 InstantInkling-Small
LMArena Vision12501235
LMArena Document1403—

Multilingual GPT-5.5 Instant leads

GPT-5.5 Instant: 52.8 (#80), Inkling-Small: 51.7 (#104)

BenchmarkGPT-5.5 InstantInkling-Small
LMArena Non-English14171402
LMArena Chinese14561465
LMArena French14281436
LMArena German14111405
LMArena Japanese14081405
LMArena Korean13921363
LMArena Russian14311391
LMArena Spanish14291428

Instruction Following Too close to call

GPT-5.5 Instant: 74.2 (#100), Inkling-Small: 73.8 (#114)

BenchmarkGPT-5.5 InstantInkling-Small
LMArena Instruction Following14061399

Long Context Too close to call

GPT-5.5 Instant: 43.4 (#96), Inkling-Small: 42.7 (#118)

BenchmarkGPT-5.5 InstantInkling-Small
LMArena Longer Query14221401

Writing & Preference GPT-5.5 Instant leads

GPT-5.5 Instant: 61.8 (#85), Inkling-Small: 59.6 (#107)

BenchmarkGPT-5.5 InstantInkling-Small
LMArena Text14191414
LMArena Creative Writing14191331
LMArena Multi-Turn14331418
EQ-Bench Creative Writing—1491

Frequently asked questions

Is GPT-5.5 Instant better than Inkling-Small?

Inkling-Small is the stronger model overall, scoring 46.5 to 42.7 on the Noometry Index.

Is GPT-5.5 Instant or Inkling-Small better for coding?

They score almost the same on coding (44.3 vs 43.6); test both on your own repository before choosing.

How many benchmarks do GPT-5.5 Instant and Inkling-Small share?

26 benchmarks have published results for both models. GPT-5.5 Instant has 27 scored results on Noometry and Inkling-Small has 33.

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