Noometry

Model comparison

GPT-6 Astra vs Grok 4.1

GPT-6 Astra is the stronger model overall, scoring 70.3 to 40.8 on the Noometry Index.

Last verified . 15 shared benchmarks.

GPT-6 Astra OpenAI

70.3

Rank #1 Confirmed

Grok 4.1 xAI

40.8

Rank #135 Confirmed

Summary

  • They share 15 benchmarks with published results for both. GPT-6 Astra scores higher in 9 categories and Grok 4.1 in 0 categories; 8 gaps are clear of the uncertainty.
  • The widest gap is in math, where GPT-6 Astra leads 93.4 to 36.2.

Side by side

GPT-6 AstraGrok 4.1
ProviderOpenAIxAI
Noometry Index70.340.8
Released2026-09-032025-11-17
WeightsProprietaryProprietary
Context window1.05M—
Max output128K—
Input $ / M tokens$10—
Output $ / M tokens$50—
Results tracked5119

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Category by category

Coding GPT-6 Astra leads

GPT-6 Astra: 70.5 (#3), Grok 4.1: 33.4 (#246)

BenchmarkGPT-6 AstraGrok 4.1
LMArena WebDev17921214
LMArena Coding14881445
DeepSWE74.1%—
FrontierCode53.3%—
FrontierSWE65.5%—
SciCode56.5%—
WeirdML93.6%—
MirrorCode46.7%—
ALE-Bench2,951—

Agentic & Tool Use GPT-6 Astra leads

GPT-6 Astra: 52.3 (#3), Grok 4.1: 33.8 (#47)

BenchmarkGPT-6 AstraGrok 4.1
APEX-Agents64.7%—
Remote Labor Index20.8%—
Cybench—39%
BALROG68.3%—
Vending-Bench 215,515—

Reasoning GPT-6 Astra leads

GPT-6 Astra: 85.1 (#1), Grok 4.1: 28.3 (#91)

BenchmarkGPT-6 AstraGrok 4.1
LMArena Hard Prompts14641436
ARC-AGI-295%—
NYT Connections (extended)98.1%—
ARC-AGI-198.5%—
CritPt31.7%—
Chess Puzzles72%—
EBR-Bench76.2%—
Mystery Game Puzzles84%—
DTBench97.3%—
LMCA64.4%—
Bench to the Future 30.14—
Epoch Capabilities Index166.6—

Math GPT-6 Astra leads

GPT-6 Astra: 93.4 (#1), Grok 4.1: 36.2 (#124)

BenchmarkGPT-6 AstraGrok 4.1
LMArena Math14631422
FrontierMath (Tiers 1-3)93.7%—
FrontierMath Tier 497.6%—
OTIS Mock AIME 2024-2025100%—
ProofBench99%—
FrontierMath Erdős2.9%—

Knowledge GPT-6 Astra leads

GPT-6 Astra: 75.3 (#1), Grok 4.1: 38.9 (#129)

BenchmarkGPT-6 AstraGrok 4.1
LMArena Expert14861417
GPQA Diamond95.8%—
Humanity's Last Exam54.8%—
SimpleQA Verified75.6%—
Vectara Hallucination Rate8.7%—

Multimodal Not comparable

GPT-6 Astra: 55.1 (#3), Grok 4.1: —

BenchmarkGPT-6 AstraGrok 4.1
LMArena Vision1280—
Blueprint-Bench 249.7%—
Furniture Assembly80%—
LMArena Document1468—

Multilingual Too close to call

GPT-6 Astra: 54.0 (#53), Grok 4.1: 53.6 (#64)

BenchmarkGPT-6 AstraGrok 4.1
LMArena Non-English14311425
LMArena Chinese14951464
LMArena French14671448
LMArena Russian14341434
LMArena Spanish14121438
LMArena German—1447
LMArena Japanese—1396
LMArena Korean—1407

Instruction Following GPT-6 Astra leads

GPT-6 Astra: 76.6 (#37), Grok 4.1: 74.0 (#106)

BenchmarkGPT-6 AstraGrok 4.1
LMArena Instruction Following14541400

Long Context GPT-6 Astra leads

GPT-6 Astra: 44.7 (#57), Grok 4.1: 43.2 (#96)

BenchmarkGPT-6 AstraGrok 4.1
LMArena Longer Query14601416

Writing & Preference GPT-6 Astra leads

GPT-6 Astra: 75.7 (#7), Grok 4.1: 62.6 (#71)

BenchmarkGPT-6 AstraGrok 4.1
LMArena Text14431437
LMArena Creative Writing14231411
LMArena Multi-Turn14571438
EQ-Bench Creative Writing2173—

Frequently asked questions

Is GPT-6 Astra better than Grok 4.1?

GPT-6 Astra is the stronger model overall, scoring 70.3 to 40.8 on the Noometry Index.

Is GPT-6 Astra or Grok 4.1 better for coding?

GPT-6 Astra scores higher on coding benchmarks: 70.5 versus 33.4 in the Noometry coding category.

How many benchmarks do GPT-6 Astra and Grok 4.1 share?

15 benchmarks have published results for both models. GPT-6 Astra has 51 scored results on Noometry and Grok 4.1 has 19.

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