Noometry

Model comparison

Gemini 3.1 Pro Preview vs Inkling

Gemini 3.1 Pro Preview is the stronger model overall, scoring 56.7 to 44.1 on the Noometry Index. Inkling costs 1.7× less per token, which makes it the better buy when Gemini 3.1 Pro Preview's lead doesn't matter for your workload.

Last verified . 39 shared benchmarks.

Gemini 3.1 Pro Preview Google

56.7

Rank #23 Confirmed

Inkling Thinking Machines Lab

44.1

Rank #80 Confirmed

Summary

  • They share 39 benchmarks with published results for both. Gemini 3.1 Pro Preview scores higher in 9 categories and Inkling in 0 categories; 8 gaps are clear of the uncertainty.
  • The widest gap is in reasoning, where Gemini 3.1 Pro Preview leads 71.7 to 40.4.
  • The biggest single-benchmark swing is ARC-AGI-2: 77.1% for Gemini 3.1 Pro Preview and 36.5% for Inkling.
  • Inkling is cheaper at $1.87 / $4.68 per million input/output tokens, against $2 / $12 for Gemini 3.1 Pro Preview.
  • Gemini 3.1 Pro Preview accepts more context: 1.05M tokens versus 66K.
  • Inkling has downloadable open weights; the other is API-only.

Side by side

Gemini 3.1 Pro PreviewInkling
ProviderGoogleThinking Machines Lab
Noometry Index56.744.1
Released2026-02-192026-07-15
WeightsProprietaryOpen
Context window1.05M66K
Max output66K66K
Input $ / M tokens$2$1.87
Output $ / M tokens$12$4.68
Results tracked7141

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

Category by category

Coding Gemini 3.1 Pro Preview leads

Gemini 3.1 Pro Preview: 42.5 (#99), Inkling: 34.5 (#234)

BenchmarkGemini 3.1 Pro PreviewInkling
LMArena WebDev14471413
SciCode58.9%47%
WeirdML72.1%32.3%
LMArena Coding14841464
ALE-Bench1,161946
SWE-bench Verified75.6%—
DeepSWE11.7%—
FrontierCode—14%
FrontierSWE—4.1%
GSO22.6%—
MirrorCode8.9%—
AlgoTune2.02—

Agentic & Tool Use Gemini 3.1 Pro Preview leads

Gemini 3.1 Pro Preview: 37.7 (#34), Inkling: 29.6 (#85)

BenchmarkGemini 3.1 Pro PreviewInkling
APEX-Agents35.3%33.8%
τ²-bench Banking26%25%
Terminal-Bench80.2%—
DeepResearch Bench47.8%—
PostTrainBench22%—
BALROG57%—
ExploitBench26.1%—
GBAEval0.8%—
GDP.pdf17%—
LMArena Search1211—
METR Time Horizons77%—
Vending-Bench 23,774—

Reasoning Gemini 3.1 Pro Preview leads

Gemini 3.1 Pro Preview: 71.7 (#12), Inkling: 40.4 (#56)

BenchmarkGemini 3.1 Pro PreviewInkling
ARC-AGI-277.1%36.5%
SimpleBench79.6%50%
ARC-AGI-198%79.5%
CritPt17.7%5.4%
Chess Puzzles55%21%
LMArena Hard Prompts14851451
DTBench97.1%87.5%
LMCA53.8%37.6%
Epoch Capabilities Index154.77148.54
NYT Connections (extended)97.4%—
EnigmaEval36.8%—
Thematic Generalization79.4%—
EBR-Bench14.3%—
Mystery Game Puzzles34%—
ForecastBench59—

Math Gemini 3.1 Pro Preview leads

Gemini 3.1 Pro Preview: 62.1 (#34), Inkling: 31.3 (#225)

BenchmarkGemini 3.1 Pro PreviewInkling
FrontierMath (Tiers 1-3)59.6%33.3%
FrontierMath Tier 426.8%4.9%
OTIS Mock AIME 2024-202595.6%88.9%
ProofBench26%0%
LMArena Math14851479
MathArena Final-Answer Competitions86.5%—
FrontierMath (Feb 2025 set)36.9%—
FrontierMath Tier 4 (v1)16.7%—

Knowledge Gemini 3.1 Pro Preview leads

Gemini 3.1 Pro Preview: 71.8 (#3), Inkling: 55.1 (#49)

BenchmarkGemini 3.1 Pro PreviewInkling
GPQA Diamond94.4%88.3%
SimpleQA Verified73.5%40.3%
LMArena Expert14851465
Humanity's Last Exam46.4%—
Vectara Hallucination Rate10.4%—

Multimodal Not comparable

Gemini 3.1 Pro Preview: 37.9 (#69), Inkling: —

BenchmarkGemini 3.1 Pro PreviewInkling
LMArena Vision1296—
Blueprint-Bench 226.5%—
Furniture Assembly26.7%—
LMArena Document1444—

Multilingual Gemini 3.1 Pro Preview leads

Gemini 3.1 Pro Preview: 57.0 (#12), Inkling: 54.0 (#52)

BenchmarkGemini 3.1 Pro PreviewInkling
LMArena Non-English14771434
LMArena Chinese15291490
LMArena French14871458
LMArena German14911446
LMArena Japanese14931429
LMArena Korean14551404
LMArena Russian14981429
LMArena Spanish14791448

Instruction Following Gemini 3.1 Pro Preview leads

Gemini 3.1 Pro Preview: 77.0 (#32), Inkling: 75.1 (#71)

BenchmarkGemini 3.1 Pro PreviewInkling
LMArena Instruction Following14661426

Long Context Gemini 3.1 Pro Preview leads

Gemini 3.1 Pro Preview: 47.4 (#18), Inkling: 43.8 (#86)

BenchmarkGemini 3.1 Pro PreviewInkling
LMArena Longer Query14831434
CL-bench20.8%—
CL-bench Life16.9%—

Writing & Preference Too close to call

Gemini 3.1 Pro Preview: 66.1 (#37), Inkling: 65.2 (#51)

BenchmarkGemini 3.1 Pro PreviewInkling
LMArena Text14811441
LMArena Creative Writing14821387
EQ-Bench Creative Writing14911611
EQ-Bench 411421226
LMArena Multi-Turn14881436

Frequently asked questions

Is Gemini 3.1 Pro Preview better than Inkling?

Gemini 3.1 Pro Preview is the stronger model overall, scoring 56.7 to 44.1 on the Noometry Index. Inkling costs 1.7× less per token, which makes it the better buy when Gemini 3.1 Pro Preview's lead doesn't matter for your workload.

Which is cheaper, Gemini 3.1 Pro Preview or Inkling?

Inkling is cheaper. It lists at $1.87 per million input tokens and $4.68 per million output tokens; Gemini 3.1 Pro Preview lists at $2 and $12.

Is Gemini 3.1 Pro Preview or Inkling better for coding?

Gemini 3.1 Pro Preview scores higher on coding benchmarks: 42.5 versus 34.5 in the Noometry coding category.

Which has the bigger context window?

Gemini 3.1 Pro Preview does, with 1.05M tokens against 66K.

How many benchmarks do Gemini 3.1 Pro Preview and Inkling share?

39 benchmarks have published results for both models. Gemini 3.1 Pro Preview has 71 scored results on Noometry and Inkling has 41.

Related comparisons

Go deeper