Noometry

Model comparison

Claude 2.1 vs GPT-5

GPT-5 is the stronger model overall, scoring 50.9 to 25.2 on the Noometry Index.

Last verified . 6 shared benchmarks.

Claude 2.1 Anthropic

25.2

Rank #345 Reported

GPT-5 OpenAI

50.9

Rank #45 Confirmed

Summary

  • They share 6 benchmarks with published results for both. Claude 2.1 scores higher in 0 categories and GPT-5 in 4 categories; 4 gaps are clear of the uncertainty.
  • The widest gap is in math, where GPT-5 leads 55.0 to 10.2.
  • The biggest single-benchmark swing is OTIS Mock AIME 2024-2025: 1.9% for Claude 2.1 and 91.4% for GPT-5.

Side by side

Claude 2.1GPT-5
ProviderAnthropicOpenAI
Noometry Index25.250.9
Released2023-11-212025-08-07
WeightsProprietaryProprietary
Context window—400K
Max output—128K
Input $ / M tokens—$1.25
Output $ / M tokens—$10
Results tracked769

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Category by category

Coding GPT-5 leads

Claude 2.1: 26.2 (#327), GPT-5: 50.3 (#47)

BenchmarkClaude 2.1GPT-5
WeirdML7.1%60.7%
SWE-bench Verified—73.6%
SWE-bench Verified (bash only)—65%
Aider Polyglot—88%
LMArena WebDev—1418
SciCode—42.9%
GSO—6.9%
LMArena Coding—1436
ALE-Bench—1,162
AlgoTune—1.67

Agentic & Tool Use Not comparable

Claude 2.1: —, GPT-5: 33.1 (#56)

BenchmarkClaude 2.1GPT-5
Terminal-Bench—49.6%
GDPval—34.8%
Remote Labor Index—1.7%
DeepResearch Bench—49.6%
BALROG—32.8%
LMArena Search—1133
METR Time Horizons—69.6%

Reasoning GPT-5 leads

Claude 2.1: 21.4 (#221), GPT-5: 38.3 (#64)

BenchmarkClaude 2.1GPT-5
DTBench51%90.7%
Epoch Capabilities Index119.27150
ForecastBench54.261.4
ARC-AGI-2—9.9%
SimpleBench—56.7%
Kagi LLM Benchmark—72.7%
ARC-AGI-1—65.7%
CritPt—12.6%
Chess Puzzles—37%
EnigmaEval—10.5%
EBR-Bench—12.7%
LMArena Hard Prompts—1416
Mystery Game Puzzles—23%
LMCA—40%

Math GPT-5 leads

Claude 2.1: 10.2 (#315), GPT-5: 55.0 (#44)

BenchmarkClaude 2.1GPT-5
OTIS Mock AIME 2024-20251.9%91.4%
FrontierMath (Tiers 1-3)—55.4%
FrontierMath Tier 4—22%
ProofBench—18%
Omni-MATH—64.7%
LMArena Math—1407
MATH Level 5—98.1%
FrontierMath (Feb 2025 set)—32.4%
FrontierMath Tier 4 (v1)—12.5%

Knowledge GPT-5 leads

Claude 2.1: 15.4 (#292), GPT-5: 56.6 (#43)

BenchmarkClaude 2.1GPT-5
GPQA Diamond33%86.2%
Humanity's Last Exam—25.3%
SimpleQA Verified—50.1%
MMLU-Pro—86.3%
Confabulations—10.3%
Vectara Hallucination Rate—14.7%
GPQA (HELM)—79.2%
LMArena Expert—1419
MMLU73.5%—

Multimodal Not comparable

Claude 2.1: —, GPT-5: 46.8 (#13)

BenchmarkClaude 2.1GPT-5
LMArena Vision—1232
GeoBench—81%
VPCT—66%

Multilingual Not comparable

Claude 2.1: —, GPT-5: 51.4 (#110)

BenchmarkClaude 2.1GPT-5
LMArena Non-English—1397
LMArena Chinese—1422
LMArena French—1410
LMArena German—1416
LMArena Japanese—1409
LMArena Korean—1360
LMArena Russian—1406
LMArena Spanish—1399

Instruction Following Not comparable

Claude 2.1: —, GPT-5: 73.8 (#113)

BenchmarkClaude 2.1GPT-5
IFEval—87.5%
LMArena Instruction Following—1388

Long Context Not comparable

Claude 2.1: —, GPT-5: 69.5 (#2)

BenchmarkClaude 2.1GPT-5
Fiction.LiveBench—97.2%
LMArena Longer Query—1399

Writing & Preference Not comparable

Claude 2.1: —, GPT-5: 63.4 (#65)

BenchmarkClaude 2.1GPT-5
LMArena Text—1406
LMArena Creative Writing—1365
Short-Story Creative Writing—86%
EQ-Bench Creative Writing—1627
WildBench—85.7%
LMArena Multi-Turn—1426

Frequently asked questions

Is Claude 2.1 better than GPT-5?

GPT-5 is the stronger model overall, scoring 50.9 to 25.2 on the Noometry Index.

Is Claude 2.1 or GPT-5 better for coding?

GPT-5 scores higher on coding benchmarks: 50.3 versus 26.2 in the Noometry coding category.

How many benchmarks do Claude 2.1 and GPT-5 share?

6 benchmarks have published results for both models. Claude 2.1 has 7 scored results on Noometry and GPT-5 has 69.

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