Noometry

Model comparison

Claude 2.1 vs GPT-5.6 Terra

GPT-5.6 Terra is the stronger model overall, scoring 59.2 to 25.2 on the Noometry Index.

Last verified . 5 shared benchmarks.

Claude 2.1 Anthropic

25.2

Rank #345 Reported

GPT-5.6 Terra OpenAI

59.2

Rank #17 Confirmed

Summary

  • They share 5 benchmarks with published results for both. Claude 2.1 scores higher in 0 categories and GPT-5.6 Terra in 4 categories; 4 gaps are clear of the uncertainty.
  • The widest gap is in math, where GPT-5.6 Terra leads 81.6 to 10.2.
  • The biggest single-benchmark swing is OTIS Mock AIME 2024-2025: 1.9% for Claude 2.1 and 99.7% for GPT-5.6 Terra.

Side by side

Claude 2.1GPT-5.6 Terra
ProviderAnthropicOpenAI
Noometry Index25.259.2
Released2023-11-212026-07-09
WeightsProprietaryProprietary
Context window—1.05M
Max output—128K
Input $ / M tokens—$2
Output $ / M tokens—$12
Results tracked752

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Category by category

Coding GPT-5.6 Terra leads

Claude 2.1: 26.2 (#327), GPT-5.6 Terra: 57.7 (#19)

BenchmarkClaude 2.1GPT-5.6 Terra
WeirdML7.1%78.3%
DeepSWE—69.6%
FrontierCode—41.3%
CursorBench—41.3%
LMArena WebDev—1522
SciCode—55%
LMArena Coding—1484
ALE-Bench—1,951

Agentic & Tool Use Not comparable

Claude 2.1: —, GPT-5.6 Terra: 40.1 (#25)

BenchmarkClaude 2.1GPT-5.6 Terra
APEX-Agents—58.2%
BALROG—53.2%
GDP.pdf—24.7%
Vending-Bench 2—7,343

Reasoning GPT-5.6 Terra leads

Claude 2.1: 21.4 (#221), GPT-5.6 Terra: 60.7 (#21)

BenchmarkClaude 2.1GPT-5.6 Terra
DTBench51%93.3%
Epoch Capabilities Index119.27159.62
ARC-AGI-2—83.9%
SimpleBench—48.9%
Kagi LLM Benchmark—51.3%
NYT Connections (extended)—78.4%
ARC-AGI-1—96.5%
CritPt—30%
Chess Puzzles—54%
LMArena Hard Prompts—1468
Mystery Game Puzzles—35%
LMCA—55%
Surface Evolver Bench—83.8%
ForecastBench54.2—

Math GPT-5.6 Terra leads

Claude 2.1: 10.2 (#315), GPT-5.6 Terra: 81.6 (#12)

BenchmarkClaude 2.1GPT-5.6 Terra
OTIS Mock AIME 2024-20251.9%99.7%
FrontierMath (Tiers 1-3)—86%
FrontierMath Tier 4—70.7%
ProofBench—74%
LMArena Math—1466

Knowledge GPT-5.6 Terra leads

Claude 2.1: 15.4 (#292), GPT-5.6 Terra: 61.2 (#30)

BenchmarkClaude 2.1GPT-5.6 Terra
GPQA Diamond33%93.3%
SimpleQA Verified—43.2%
LMArena Expert—1492
MMLU73.5%—

Multimodal Not comparable

Claude 2.1: —, GPT-5.6 Terra: 47.3 (#11)

BenchmarkClaude 2.1GPT-5.6 Terra
LMArena Vision—1271
Blueprint-Bench 2—30.8%
Furniture Assembly—54.2%
LMArena Document—1472

Multilingual Not comparable

Claude 2.1: —, GPT-5.6 Terra: 54.4 (#44)

BenchmarkClaude 2.1GPT-5.6 Terra
LMArena Non-English—1439
LMArena Chinese—1513
LMArena French—1471
LMArena German—1460
LMArena Japanese—1457
LMArena Korean—1425
LMArena Russian—1450
LMArena Spanish—1448

Instruction Following Not comparable

Claude 2.1: —, GPT-5.6 Terra: 76.4 (#40)

BenchmarkClaude 2.1GPT-5.6 Terra
LMArena Instruction Following—1454

Long Context Not comparable

Claude 2.1: —, GPT-5.6 Terra: 44.4 (#68)

BenchmarkClaude 2.1GPT-5.6 Terra
LMArena Longer Query—1451

Writing & Preference Not comparable

Claude 2.1: —, GPT-5.6 Terra: 70.2 (#23)

BenchmarkClaude 2.1GPT-5.6 Terra
LMArena Text—1447
LMArena Creative Writing—1410
EQ-Bench Creative Writing—1855
EQ-Bench 4—1234
LMArena Multi-Turn—1449

Frequently asked questions

Is Claude 2.1 better than GPT-5.6 Terra?

GPT-5.6 Terra is the stronger model overall, scoring 59.2 to 25.2 on the Noometry Index.

Is Claude 2.1 or GPT-5.6 Terra better for coding?

GPT-5.6 Terra scores higher on coding benchmarks: 57.7 versus 26.2 in the Noometry coding category.

How many benchmarks do Claude 2.1 and GPT-5.6 Terra share?

5 benchmarks have published results for both models. Claude 2.1 has 7 scored results on Noometry and GPT-5.6 Terra has 52.

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