Noometry

Model comparison

Gemini 4 Argon vs GPT-5.6 Terra

GPT-5.6 Terra is the stronger model overall, scoring 59.2 to 56.5 on the Noometry Index.

Last verified . 20 shared benchmarks.

Gemini 4 Argon Google

56.5

Rank #24 Confirmed

GPT-5.6 Terra OpenAI

59.2

Rank #17 Confirmed

Summary

  • They share 20 benchmarks with published results for both. Gemini 4 Argon scores higher in 6 categories and GPT-5.6 Terra in 4 categories; 9 gaps are clear of the uncertainty.
  • The widest gap is in knowledge, where GPT-5.6 Terra leads 61.2 to 43.9.
  • The biggest single-benchmark swing is ProofBench: 99% for Gemini 4 Argon and 74% for GPT-5.6 Terra.

Side by side

Gemini 4 ArgonGPT-5.6 Terra
ProviderGoogleOpenAI
Noometry Index56.559.2
Released2026-09-302026-07-09
WeightsProprietaryProprietary
Context window—1.05M
Max output—128K
Input $ / M tokens—$2
Output $ / M tokens—$12
Results tracked2152

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Category by category

Coding Gemini 4 Argon leads

Gemini 4 Argon: 62.0 (#9), GPT-5.6 Terra: 57.7 (#19)

BenchmarkGemini 4 ArgonGPT-5.6 Terra
LMArena WebDev16781522
SciCode61.8%55%
LMArena Coding15501484
DeepSWE—69.6%
FrontierCode—41.3%
CursorBench—41.3%
FrontierSWE55%—
WeirdML—78.3%
ALE-Bench—1,951

Agentic & Tool Use Gemini 4 Argon leads

Gemini 4 Argon: 49.2 (#8), GPT-5.6 Terra: 40.1 (#25)

BenchmarkGemini 4 ArgonGPT-5.6 Terra
APEX-Agents82.2%58.2%
Vending-Bench 213,7187,343
BALROG—53.2%
GDP.pdf—24.7%

Reasoning GPT-5.6 Terra leads

Gemini 4 Argon: 44.2 (#47), GPT-5.6 Terra: 60.7 (#21)

BenchmarkGemini 4 ArgonGPT-5.6 Terra
CritPt27.1%30%
LMArena Hard Prompts15481468
ARC-AGI-2—83.9%
SimpleBench—48.9%
Kagi LLM Benchmark—51.3%
NYT Connections (extended)—78.4%
ARC-AGI-1—96.5%
Chess Puzzles—54%
Mystery Game Puzzles—35%
DTBench—93.3%
LMCA—55%
Surface Evolver Bench—83.8%
Epoch Capabilities Index—159.62

Math GPT-5.6 Terra leads

Gemini 4 Argon: 73.9 (#17), GPT-5.6 Terra: 81.6 (#12)

BenchmarkGemini 4 ArgonGPT-5.6 Terra
ProofBench99%74%
LMArena Math15361466
FrontierMath (Tiers 1-3)—86%
FrontierMath Tier 4—70.7%
OTIS Mock AIME 2024-2025—99.7%

Knowledge GPT-5.6 Terra leads

Gemini 4 Argon: 43.9 (#89), GPT-5.6 Terra: 61.2 (#30)

BenchmarkGemini 4 ArgonGPT-5.6 Terra
LMArena Expert15531492
GPQA Diamond—93.3%
SimpleQA Verified—43.2%

Multimodal Too close to call

Gemini 4 Argon: 46.5 (#14), GPT-5.6 Terra: 47.3 (#11)

BenchmarkGemini 4 ArgonGPT-5.6 Terra
Blueprint-Bench 254.4%30.8%
LMArena Vision—1271
Furniture Assembly—54.2%
LMArena Document—1472

Multilingual Gemini 4 Argon leads

Gemini 4 Argon: 60.3 (#1), GPT-5.6 Terra: 54.4 (#44)

BenchmarkGemini 4 ArgonGPT-5.6 Terra
LMArena Non-English15231439
LMArena Chinese16101513
LMArena Russian15371450
LMArena Spanish14971448
LMArena French—1471
LMArena German—1460
LMArena Japanese—1457
LMArena Korean—1425

Instruction Following Gemini 4 Argon leads

Gemini 4 Argon: 80.1 (#2), GPT-5.6 Terra: 76.4 (#40)

BenchmarkGemini 4 ArgonGPT-5.6 Terra
LMArena Instruction Following15381454

Long Context Gemini 4 Argon leads

Gemini 4 Argon: 47.6 (#15), GPT-5.6 Terra: 44.4 (#68)

BenchmarkGemini 4 ArgonGPT-5.6 Terra
LMArena Longer Query15491451

Writing & Preference Gemini 4 Argon leads

Gemini 4 Argon: 71.4 (#19), GPT-5.6 Terra: 70.2 (#23)

BenchmarkGemini 4 ArgonGPT-5.6 Terra
LMArena Text15341447
LMArena Creative Writing15311410
LMArena Multi-Turn15571449
EQ-Bench Creative Writing—1855
EQ-Bench 4—1234

Frequently asked questions

Is Gemini 4 Argon better than GPT-5.6 Terra?

GPT-5.6 Terra is the stronger model overall, scoring 59.2 to 56.5 on the Noometry Index.

Is Gemini 4 Argon or GPT-5.6 Terra better for coding?

Gemini 4 Argon scores higher on coding benchmarks: 62.0 versus 57.7 in the Noometry coding category.

How many benchmarks do Gemini 4 Argon and GPT-5.6 Terra share?

20 benchmarks have published results for both models. Gemini 4 Argon has 21 scored results on Noometry and GPT-5.6 Terra has 52.

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