Noometry

Model comparison

GPT-6.1 Sol vs Grok 3

GPT-6.1 Sol is the stronger model overall, scoring 65.6 to 39.9 on the Noometry Index.

Last verified . 17 shared benchmarks.

GPT-6.1 Sol OpenAI

65.6

Rank #6 Confirmed

Grok 3 xAI

39.9

Rank #157 Confirmed

Summary

  • They share 17 benchmarks with published results for both. GPT-6.1 Sol scores higher in 9 categories and Grok 3 in 0 categories; 9 gaps are clear of the uncertainty.
  • The widest gap is in reasoning, where GPT-6.1 Sol leads 81.9 to 13.7.
  • The biggest single-benchmark swing is ARC-AGI-2: 94.2% for GPT-6.1 Sol and 0% for Grok 3.

Side by side

GPT-6.1 SolGrok 3
ProviderOpenAIxAI
Noometry Index65.639.9
Released2026-09-292025-04-09
WeightsProprietaryProprietary
Context window1.05M—
Max output128K—
Input $ / M tokens$2—
Output $ / M tokens$10—
Results tracked3440

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Category by category

Coding GPT-6.1 Sol leads

GPT-6.1 Sol: 63.2 (#8), Grok 3: 41.9 (#115)

BenchmarkGPT-6.1 SolGrok 3
LMArena Coding14871432
DeepSWE75.2%—
FrontierCode50.2%—
Aider Polyglot—53.3%
LMArena WebDev1755—
SciCode55.8%—
WeirdML—37.2%

Agentic & Tool Use GPT-6.1 Sol leads

GPT-6.1 Sol: 39.6 (#26), Grok 3: 30.5 (#76)

BenchmarkGPT-6.1 SolGrok 3
APEX-Agents60%—
BALROG—29.5%
GDP.pdf32%—

Reasoning GPT-6.1 Sol leads

GPT-6.1 Sol: 81.9 (#2), Grok 3: 13.7 (#333)

BenchmarkGPT-6.1 SolGrok 3
ARC-AGI-294.2%0%
ARC-AGI-198.5%5.5%
LMArena Hard Prompts14661434
Epoch Capabilities Index166.09138.33
SimpleBench—36.1%
Kagi LLM Benchmark—61.3%
NYT Connections (extended)95.5%—
CritPt31.7%—
Chess Puzzles61%—
EBR-Bench54.3%—
Mystery Game Puzzles80%—

Math GPT-6.1 Sol leads

GPT-6.1 Sol: 93.7 (#1), Grok 3: 38.0 (#145)

BenchmarkGPT-6.1 SolGrok 3
OTIS Mock AIME 2024-2025100%55.6%
LMArena Math14641391
FrontierMath (Tiers 1-3)93.7%—
FrontierMath Tier 4100%—
ProofBench99%—
Omni-MATH—46.4%
MATH Level 5—88.7%
FrontierMath (Feb 2025 set)—3.8%
FrontierMath Tier 4 (v1)—0%

Knowledge GPT-6.1 Sol leads

GPT-6.1 Sol: 71.8 (#4), Grok 3: 46.2 (#82)

BenchmarkGPT-6.1 SolGrok 3
GPQA Diamond95.4%75.8%
LMArena Expert15021421
SimpleQA Verified73.9%—
MMLU-Pro—78.8%
Confabulations—14.2%
Vectara Hallucination Rate—5.8%
GPQA (HELM)—65%

Multimodal Not comparable

GPT-6.1 Sol: 52.7 (#5), Grok 3: —

BenchmarkGPT-6.1 SolGrok 3
LMArena Vision1288—
Furniture Assembly80%—

Multilingual GPT-6.1 Sol leads

GPT-6.1 Sol: 54.3 (#46), Grok 3: 52.3 (#87)

BenchmarkGPT-6.1 SolGrok 3
LMArena Non-English14381410
LMArena Chinese14771448
LMArena Russian14551416
LMArena French—1460
LMArena German—1431
LMArena Japanese—1387
LMArena Korean—1373
LMArena Spanish—1417

Instruction Following GPT-6.1 Sol leads

GPT-6.1 Sol: 77.0 (#29), Grok 3: 75.0 (#73)

BenchmarkGPT-6.1 SolGrok 3
LMArena Instruction Following14681409
IFEval—88.4%

Long Context GPT-6.1 Sol leads

GPT-6.1 Sol: 44.9 (#54), Grok 3: 38.7 (#192)

BenchmarkGPT-6.1 SolGrok 3
LMArena Longer Query14651439
Fiction.LiveBench—58.3%

Writing & Preference GPT-6.1 Sol leads

GPT-6.1 Sol: 63.6 (#63), Grok 3: 55.8 (#141)

BenchmarkGPT-6.1 SolGrok 3
LMArena Text14471426
LMArena Creative Writing14321414
LMArena Multi-Turn14491425
Short-Story Creative Writing—76.4%
EQ-Bench Creative Writing—1186
WildBench—84.9%

Frequently asked questions

Is GPT-6.1 Sol better than Grok 3?

GPT-6.1 Sol is the stronger model overall, scoring 65.6 to 39.9 on the Noometry Index.

Is GPT-6.1 Sol or Grok 3 better for coding?

GPT-6.1 Sol scores higher on coding benchmarks: 63.2 versus 41.9 in the Noometry coding category.

How many benchmarks do GPT-6.1 Sol and Grok 3 share?

17 benchmarks have published results for both models. GPT-6.1 Sol has 34 scored results on Noometry and Grok 3 has 40.

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