Noometry

Model comparison

GPT-6.1 Sol vs Kimi K2 Thinking Turbo

GPT-6.1 Sol is the stronger model overall, scoring 65.6 to 45.8 on the Noometry Index.

Last verified . 16 shared benchmarks.

GPT-6.1 Sol OpenAI

65.6

Rank #6 Confirmed

Kimi K2 Thinking Turbo Moonshot AI

45.8

Rank #70 Confirmed

Summary

  • They share 16 benchmarks with published results for both. GPT-6.1 Sol scores higher in 8 categories and Kimi K2 Thinking Turbo in 0 categories; 8 gaps are clear of the uncertainty.
  • The widest gap is in reasoning, where GPT-6.1 Sol leads 81.9 to 32.5.
  • The biggest single-benchmark swing is Chess Puzzles: 61% for GPT-6.1 Sol and 20% for Kimi K2 Thinking Turbo.
  • Kimi K2 Thinking Turbo has downloadable open weights; the other is API-only.

Side by side

GPT-6.1 SolKimi K2 Thinking Turbo
ProviderOpenAIMoonshot AI
Noometry Index65.645.8
Released2026-09-292025-11-06
WeightsProprietaryOpen
Context window1.05M—
Max output128K—
Input $ / M tokens$2—
Output $ / M tokens$10—
Results tracked3421

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Category by category

Coding GPT-6.1 Sol leads

GPT-6.1 Sol: 63.2 (#8), Kimi K2 Thinking Turbo: 38.4 (#178)

BenchmarkGPT-6.1 SolKimi K2 Thinking Turbo
LMArena WebDev17551322
LMArena Coding14871454
DeepSWE75.2%—
FrontierCode50.2%—
SciCode55.8%—

Agentic & Tool Use Not comparable

GPT-6.1 Sol: 39.6 (#26), Kimi K2 Thinking Turbo: —

BenchmarkGPT-6.1 SolKimi K2 Thinking Turbo
APEX-Agents60%—
GDP.pdf32%—

Reasoning GPT-6.1 Sol leads

GPT-6.1 Sol: 81.9 (#2), Kimi K2 Thinking Turbo: 32.5 (#75)

BenchmarkGPT-6.1 SolKimi K2 Thinking Turbo
Chess Puzzles61%20%
LMArena Hard Prompts14661428
ARC-AGI-294.2%—
NYT Connections (extended)95.5%—
ARC-AGI-198.5%—
CritPt31.7%—
EBR-Bench54.3%—
Mystery Game Puzzles80%—
Epoch Capabilities Index166.09—

Math GPT-6.1 Sol leads

GPT-6.1 Sol: 93.7 (#1), Kimi K2 Thinking Turbo: 47.4 (#68)

BenchmarkGPT-6.1 SolKimi K2 Thinking Turbo
OTIS Mock AIME 2024-2025100%83.1%
LMArena Math14641429
FrontierMath (Tiers 1-3)93.7%—
FrontierMath Tier 4100%—
ProofBench99%—

Knowledge GPT-6.1 Sol leads

GPT-6.1 Sol: 71.8 (#4), Kimi K2 Thinking Turbo: 50.9 (#69)

BenchmarkGPT-6.1 SolKimi K2 Thinking Turbo
GPQA Diamond95.4%84.2%
LMArena Expert15021439
SimpleQA Verified73.9%—

Multimodal Not comparable

GPT-6.1 Sol: 52.7 (#5), Kimi K2 Thinking Turbo: —

BenchmarkGPT-6.1 SolKimi K2 Thinking Turbo
LMArena Vision1288—
Furniture Assembly80%—

Multilingual GPT-6.1 Sol leads

GPT-6.1 Sol: 54.3 (#46), Kimi K2 Thinking Turbo: 51.4 (#109)

BenchmarkGPT-6.1 SolKimi K2 Thinking Turbo
LMArena Non-English14381398
LMArena Chinese14771456
LMArena Russian14551391
LMArena French—1425
LMArena German—1390
LMArena Japanese—1357
LMArena Korean—1330
LMArena Spanish—1406

Instruction Following GPT-6.1 Sol leads

GPT-6.1 Sol: 77.0 (#29), Kimi K2 Thinking Turbo: 74.0 (#109)

BenchmarkGPT-6.1 SolKimi K2 Thinking Turbo
LMArena Instruction Following14681403

Long Context GPT-6.1 Sol leads

GPT-6.1 Sol: 44.9 (#54), Kimi K2 Thinking Turbo: 43.2 (#102)

BenchmarkGPT-6.1 SolKimi K2 Thinking Turbo
LMArena Longer Query14651415

Writing & Preference GPT-6.1 Sol leads

GPT-6.1 Sol: 63.6 (#63), Kimi K2 Thinking Turbo: 60.0 (#104)

BenchmarkGPT-6.1 SolKimi K2 Thinking Turbo
LMArena Text14471415
LMArena Creative Writing14321374
LMArena Multi-Turn14491414

Frequently asked questions

Is GPT-6.1 Sol better than Kimi K2 Thinking Turbo?

GPT-6.1 Sol is the stronger model overall, scoring 65.6 to 45.8 on the Noometry Index.

Is GPT-6.1 Sol or Kimi K2 Thinking Turbo better for coding?

GPT-6.1 Sol scores higher on coding benchmarks: 63.2 versus 38.4 in the Noometry coding category.

How many benchmarks do GPT-6.1 Sol and Kimi K2 Thinking Turbo share?

16 benchmarks have published results for both models. GPT-6.1 Sol has 34 scored results on Noometry and Kimi K2 Thinking Turbo has 21.

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