Noometry

Model comparison

GPT-6.1 Sol vs Grok-2 (Dec 2024)

GPT-6.1 Sol is the stronger model overall, scoring 65.6 to 33.7 on the Noometry Index.

Last verified . 15 shared benchmarks.

GPT-6.1 Sol OpenAI

65.6

Rank #6 Confirmed

Grok-2 (Dec 2024) xAI

33.7

Rank #239 Confirmed

Summary

  • They share 15 benchmarks with published results for both. GPT-6.1 Sol scores higher in 8 categories and Grok-2 (Dec 2024) in 0 categories; 8 gaps are clear of the uncertainty.
  • The widest gap is in math, where GPT-6.1 Sol leads 93.7 to 20.8.
  • The biggest single-benchmark swing is OTIS Mock AIME 2024-2025: 100% for GPT-6.1 Sol and 11.5% for Grok-2 (Dec 2024).

Side by side

GPT-6.1 SolGrok-2 (Dec 2024)
ProviderOpenAIxAI
Noometry Index65.633.7
Released2026-09-292024-08-13
WeightsProprietaryProprietary
Context window1.05M—
Max output128K—
Input $ / M tokens$2—
Output $ / M tokens$10—
Results tracked3434

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Category by category

Coding GPT-6.1 Sol leads

GPT-6.1 Sol: 63.2 (#8), Grok-2 (Dec 2024): 33.3 (#258)

BenchmarkGPT-6.1 SolGrok-2 (Dec 2024)
LMArena Coding14871287
DeepSWE75.2%—
FrontierCode50.2%—
LMArena WebDev1755—
SciCode55.8%—
WeirdML—22.2%
LiveBench Coding—46.4%

Agentic & Tool Use Not comparable

GPT-6.1 Sol: 39.6 (#26), Grok-2 (Dec 2024): —

BenchmarkGPT-6.1 SolGrok-2 (Dec 2024)
APEX-Agents60%—
GDP.pdf32%—

Reasoning GPT-6.1 Sol leads

GPT-6.1 Sol: 81.9 (#2), Grok-2 (Dec 2024): 16.9 (#299)

BenchmarkGPT-6.1 SolGrok-2 (Dec 2024)
LMArena Hard Prompts14661272
Epoch Capabilities Index166.09130.48
ARC-AGI-294.2%—
SimpleBench—22.7%
NYT Connections (extended)95.5%—
ARC-AGI-198.5%—
CritPt31.7%—
Chess Puzzles61%—
EBR-Bench54.3%—
LiveBench Reasoning—54.8%
Mystery Game Puzzles80%—
DTBench—65.2%
LiveBench Data Analysis—54.5%
LiveBench—54.3%

Math GPT-6.1 Sol leads

GPT-6.1 Sol: 93.7 (#1), Grok-2 (Dec 2024): 20.8 (#284)

BenchmarkGPT-6.1 SolGrok-2 (Dec 2024)
OTIS Mock AIME 2024-2025100%11.5%
LMArena Math14641283
FrontierMath (Tiers 1-3)93.7%—
FrontierMath Tier 4100%—
ProofBench99%—
LiveBench Math—54.9%
MATH Level 5—63.5%
FrontierMath (Feb 2025 set)—0.7%

Knowledge GPT-6.1 Sol leads

GPT-6.1 Sol: 71.8 (#4), Grok-2 (Dec 2024): 29.8 (#233)

BenchmarkGPT-6.1 SolGrok-2 (Dec 2024)
GPQA Diamond95.4%53.8%
LMArena Expert15021254
SimpleQA Verified73.9%—
Confabulations—20.1%

Multimodal Not comparable

GPT-6.1 Sol: 52.7 (#5), Grok-2 (Dec 2024): —

BenchmarkGPT-6.1 SolGrok-2 (Dec 2024)
LMArena Vision1288—
Furniture Assembly80%—

Multilingual GPT-6.1 Sol leads

GPT-6.1 Sol: 54.3 (#46), Grok-2 (Dec 2024): 43.1 (#188)

BenchmarkGPT-6.1 SolGrok-2 (Dec 2024)
LMArena Non-English14381282
LMArena Chinese14771289
LMArena Russian14551286
LMArena French—1318
LMArena German—1287
LMArena Japanese—1244
LMArena Korean—1237
LMArena Spanish—1281

Instruction Following GPT-6.1 Sol leads

GPT-6.1 Sol: 77.0 (#29), Grok-2 (Dec 2024): 66.9 (#202)

BenchmarkGPT-6.1 SolGrok-2 (Dec 2024)
LMArena Instruction Following14681270
LiveBench Instruction Following—69.6%

Long Context GPT-6.1 Sol leads

GPT-6.1 Sol: 44.9 (#54), Grok-2 (Dec 2024): 38.8 (#190)

BenchmarkGPT-6.1 SolGrok-2 (Dec 2024)
LMArena Longer Query14651276

Writing & Preference GPT-6.1 Sol leads

GPT-6.1 Sol: 63.6 (#63), Grok-2 (Dec 2024): 48.6 (#198)

BenchmarkGPT-6.1 SolGrok-2 (Dec 2024)
LMArena Text14471305
LMArena Creative Writing14321284
LMArena Multi-Turn14491290
Short-Story Creative Writing—63.6%
LiveBench Language—45.6%

Frequently asked questions

Is GPT-6.1 Sol better than Grok-2 (Dec 2024)?

GPT-6.1 Sol is the stronger model overall, scoring 65.6 to 33.7 on the Noometry Index.

Is GPT-6.1 Sol or Grok-2 (Dec 2024) better for coding?

GPT-6.1 Sol scores higher on coding benchmarks: 63.2 versus 33.3 in the Noometry coding category.

How many benchmarks do GPT-6.1 Sol and Grok-2 (Dec 2024) share?

15 benchmarks have published results for both models. GPT-6.1 Sol has 34 scored results on Noometry and Grok-2 (Dec 2024) has 34.

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