Noometry

Model comparison

GPT-6.1 Sol vs Grok 4.6

GPT-6.1 Sol is the stronger model overall, scoring 65.6 to 56.9 on the Noometry Index.

Last verified . 34 shared benchmarks.

GPT-6.1 Sol OpenAI

65.6

Rank #6 Confirmed

Grok 4.6 xAI

56.9

Rank #21 Confirmed

Summary

  • They share 34 benchmarks with published results for both. GPT-6.1 Sol scores higher in 10 categories and Grok 4.6 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 67.0.
  • The biggest single-benchmark swing is FrontierMath Tier 4: 100% for GPT-6.1 Sol and 31.7% for Grok 4.6.
  • Grok 4.6 is cheaper at $2 / $6 per million input/output tokens, against $2 / $10 for GPT-6.1 Sol.
  • GPT-6.1 Sol accepts more context: 1.05M tokens versus 500K.

Side by side

GPT-6.1 SolGrok 4.6
ProviderOpenAIxAI
Noometry Index65.656.9
Released2026-09-292026-08-12
WeightsProprietaryProprietary
Context window1.05M500K
Max output128K500K
Input $ / M tokens$2$2
Output $ / M tokens$10$6
Results tracked3449

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Category by category

Coding GPT-6.1 Sol leads

GPT-6.1 Sol: 63.2 (#8), Grok 4.6: 58.5 (#16)

BenchmarkGPT-6.1 SolGrok 4.6
DeepSWE75.2%67.5%
FrontierCode50.2%48%
LMArena WebDev17551617
SciCode55.8%56.5%
LMArena Coding14871465
CursorBench—41.4%
FrontierSWE—25.3%
WeirdML—67.3%
ALE-Bench—1,508

Agentic & Tool Use Too close to call

GPT-6.1 Sol: 39.6 (#26), Grok 4.6: 39.4 (#27)

BenchmarkGPT-6.1 SolGrok 4.6
APEX-Agents60%65.3%
GDP.pdf32%17.2%
Vending-Bench 2—9,047

Reasoning GPT-6.1 Sol leads

GPT-6.1 Sol: 81.9 (#2), Grok 4.6: 61.4 (#20)

BenchmarkGPT-6.1 SolGrok 4.6
ARC-AGI-294.2%67.1%
NYT Connections (extended)95.5%80%
ARC-AGI-198.5%87.5%
CritPt31.7%19.7%
Chess Puzzles61%40%
EBR-Bench54.3%30.5%
LMArena Hard Prompts14661447
Mystery Game Puzzles80%34%
Epoch Capabilities Index166.09156.44
SimpleBench—75.9%
DTBench—97.3%
LMCA—48.5%

Math GPT-6.1 Sol leads

GPT-6.1 Sol: 93.7 (#1), Grok 4.6: 67.0 (#24)

BenchmarkGPT-6.1 SolGrok 4.6
FrontierMath (Tiers 1-3)93.7%66%
FrontierMath Tier 4100%31.7%
OTIS Mock AIME 2024-2025100%99.2%
ProofBench99%51%
LMArena Math14641423

Knowledge GPT-6.1 Sol leads

GPT-6.1 Sol: 71.8 (#4), Grok 4.6: 63.3 (#20)

BenchmarkGPT-6.1 SolGrok 4.6
GPQA Diamond95.4%94%
SimpleQA Verified73.9%49.3%
LMArena Expert15021467

Multimodal GPT-6.1 Sol leads

GPT-6.1 Sol: 52.7 (#5), Grok 4.6: 43.6 (#23)

BenchmarkGPT-6.1 SolGrok 4.6
LMArena Vision12881263
Furniture Assembly80%40%
Blueprint-Bench 2—33.2%
LMArena Document—1452

Multilingual GPT-6.1 Sol leads

GPT-6.1 Sol: 54.3 (#46), Grok 4.6: 53.0 (#74)

BenchmarkGPT-6.1 SolGrok 4.6
LMArena Non-English14381420
LMArena Chinese14771480
LMArena Russian14551422
LMArena French—1461
LMArena German—1431
LMArena Japanese—1376
LMArena Korean—1397
LMArena Spanish—1404

Instruction Following GPT-6.1 Sol leads

GPT-6.1 Sol: 77.0 (#29), Grok 4.6: 75.4 (#63)

BenchmarkGPT-6.1 SolGrok 4.6
LMArena Instruction Following14681431

Long Context Too close to call

GPT-6.1 Sol: 44.9 (#54), Grok 4.6: 44.5 (#66)

BenchmarkGPT-6.1 SolGrok 4.6
LMArena Longer Query14651454

Writing & Preference GPT-6.1 Sol leads

GPT-6.1 Sol: 63.6 (#63), Grok 4.6: 62.3 (#80)

BenchmarkGPT-6.1 SolGrok 4.6
LMArena Text14471428
LMArena Creative Writing14321428
LMArena Multi-Turn14491425

Frequently asked questions

Is GPT-6.1 Sol better than Grok 4.6?

GPT-6.1 Sol is the stronger model overall, scoring 65.6 to 56.9 on the Noometry Index.

Which is cheaper, GPT-6.1 Sol or Grok 4.6?

Grok 4.6 is cheaper. It lists at $2 per million input tokens and $6 per million output tokens; GPT-6.1 Sol lists at $2 and $10.

Is GPT-6.1 Sol or Grok 4.6 better for coding?

GPT-6.1 Sol scores higher on coding benchmarks: 63.2 versus 58.5 in the Noometry coding category.

Which has the bigger context window?

GPT-6.1 Sol does, with 1.05M tokens against 500K.

How many benchmarks do GPT-6.1 Sol and Grok 4.6 share?

34 benchmarks have published results for both models. GPT-6.1 Sol has 34 scored results on Noometry and Grok 4.6 has 49.

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