Noometry

Model comparison

Claude 2.1 vs GPT-6 Astra

GPT-6 Astra is the stronger model overall, scoring 70.8 to 25.2 on the Noometry Index.

Last verified . 5 shared benchmarks.

Claude 2.1 Anthropic

25.2

Rank #345 Reported

GPT-6 Astra OpenAI

70.8

Rank #1 Confirmed

Summary

  • They share 5 benchmarks with published results for both. Claude 2.1 scores higher in 0 categories and GPT-6 Astra in 4 categories; 4 gaps are clear of the uncertainty.
  • The widest gap is in math, where GPT-6 Astra leads 93.5 to 10.2.
  • The biggest single-benchmark swing is OTIS Mock AIME 2024-2025: 1.9% for Claude 2.1 and 100% for GPT-6 Astra.

Side by side

Claude 2.1GPT-6 Astra
ProviderAnthropicOpenAI
Noometry Index25.270.8
Released2023-11-212026-09-03
WeightsProprietaryProprietary
Context window—1.05M
Max output—128K
Input $ / M tokens—$10
Output $ / M tokens—$50
Results tracked756

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Category by category

Coding GPT-6 Astra leads

Claude 2.1: 26.2 (#327), GPT-6 Astra: 73.7 (#2)

BenchmarkClaude 2.1GPT-6 Astra
WeirdML7.1%93.6%
DeepSWE—74.1%
FrontierCode—53.3%
LMArena WebDev—1786
FrontierSWE—65.5%
SciCode—56.5%
GSO—79.4%
LMArena Coding—1487
MirrorCode—46.7%
ALE-Bench—2,951

Agentic & Tool Use Not comparable

Claude 2.1: —, GPT-6 Astra: 52.9 (#3)

BenchmarkClaude 2.1GPT-6 Astra
APEX-Agents—64.7%
Remote Labor Index—20.8%
BALROG—68.3%
GDP.pdf—34.2%
Vending-Bench 2—15,515

Reasoning GPT-6 Astra leads

Claude 2.1: 21.4 (#221), GPT-6 Astra: 85.1 (#1)

BenchmarkClaude 2.1GPT-6 Astra
DTBench51%97.3%
Epoch Capabilities Index119.27166.45
ARC-AGI-2—95%
NYT Connections (extended)—98.1%
ARC-AGI-1—98.5%
CritPt—31.7%
Chess Puzzles—72%
EBR-Bench—76.2%
LMArena Hard Prompts—1462
Mystery Game Puzzles—84%
LMCA—64.4%
Bench to the Future 3—0.14
ForecastBench54.2—

Math GPT-6 Astra leads

Claude 2.1: 10.2 (#315), GPT-6 Astra: 93.5 (#2)

BenchmarkClaude 2.1GPT-6 Astra
OTIS Mock AIME 2024-20251.9%100%
FrontierMath (Tiers 1-3)—93.7%
FrontierMath Tier 4—97.6%
ProofBench—99%
LMArena Math—1465
FrontierMath Erdős—2.9%

Knowledge GPT-6 Astra leads

Claude 2.1: 15.4 (#292), GPT-6 Astra: 75.3 (#1)

BenchmarkClaude 2.1GPT-6 Astra
GPQA Diamond33%95.8%
Humanity's Last Exam—54.8%
SimpleQA Verified—75.6%
Vectara Hallucination Rate—8.7%
LMArena Expert—1483
MMLU73.5%—

Multimodal Not comparable

Claude 2.1: —, GPT-6 Astra: 55.0 (#3)

BenchmarkClaude 2.1GPT-6 Astra
LMArena Vision—1281
Blueprint-Bench 2—49.7%
Furniture Assembly—80%
LMArena Document—1468

Multilingual Not comparable

Claude 2.1: —, GPT-6 Astra: 53.7 (#61)

BenchmarkClaude 2.1GPT-6 Astra
LMArena Non-English—1430
LMArena Chinese—1484
LMArena French—1456
LMArena German—1440
LMArena Japanese—1379
LMArena Korean—1426
LMArena Russian—1436
LMArena Spanish—1407

Instruction Following Not comparable

Claude 2.1: —, GPT-6 Astra: 76.3 (#44)

BenchmarkClaude 2.1GPT-6 Astra
LMArena Instruction Following—1450

Long Context Not comparable

Claude 2.1: —, GPT-6 Astra: 44.5 (#62)

BenchmarkClaude 2.1GPT-6 Astra
LMArena Longer Query—1456

Writing & Preference Not comparable

Claude 2.1: —, GPT-6 Astra: 75.3 (#7)

BenchmarkClaude 2.1GPT-6 Astra
LMArena Text—1441
LMArena Creative Writing—1418
EQ-Bench Creative Writing—2173
LMArena Multi-Turn—1448

Frequently asked questions

Is Claude 2.1 better than GPT-6 Astra?

GPT-6 Astra is the stronger model overall, scoring 70.8 to 25.2 on the Noometry Index.

Is Claude 2.1 or GPT-6 Astra better for coding?

GPT-6 Astra scores higher on coding benchmarks: 73.7 versus 26.2 in the Noometry coding category.

How many benchmarks do Claude 2.1 and GPT-6 Astra share?

5 benchmarks have published results for both models. Claude 2.1 has 7 scored results on Noometry and GPT-6 Astra has 56.

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