Noometry

Model comparison

GPT-5.2 Pro vs GPT-5.6 Terra

GPT-5.6 Terra is the stronger model overall, scoring 59.2 to 52.3 on the Noometry Index.

Last verified . 7 shared benchmarks.

GPT-5.2 Pro OpenAI

52.3

Rank #39 Reported

GPT-5.6 Terra OpenAI

59.2

Rank #17 Confirmed

Summary

  • They share 7 benchmarks with published results for both. GPT-5.2 Pro scores higher in 0 categories and GPT-5.6 Terra in 2 categories; 2 gaps are clear of the uncertainty.
  • The widest gap is in math, where GPT-5.6 Terra leads 81.6 to 65.3.
  • The biggest single-benchmark swing is ARC-AGI-2: 54.2% for GPT-5.2 Pro and 83.9% for GPT-5.6 Terra.
  • GPT-5.6 Terra is cheaper at $2 / $12 per million input/output tokens, against $21 / $168 for GPT-5.2 Pro.
  • GPT-5.6 Terra accepts more context: 1.05M tokens versus 400K.

Side by side

GPT-5.2 ProGPT-5.6 Terra
ProviderOpenAIOpenAI
Noometry Index52.359.2
Released2025-12-112026-07-09
WeightsProprietaryProprietary
Context window400K1.05M
Max output128K128K
Input $ / M tokens$21$2
Output $ / M tokens$168$12
Results tracked852

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Category by category

Coding Not comparable

GPT-5.2 Pro: —, GPT-5.6 Terra: 57.7 (#19)

BenchmarkGPT-5.2 ProGPT-5.6 Terra
DeepSWE—69.6%
FrontierCode—41.3%
CursorBench—41.3%
LMArena WebDev—1522
SciCode—55%
WeirdML—78.3%
LMArena Coding—1484
ALE-Bench—1,951

Agentic & Tool Use Not comparable

GPT-5.2 Pro: —, GPT-5.6 Terra: 40.1 (#25)

BenchmarkGPT-5.2 ProGPT-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

GPT-5.2 Pro: 51.5 (#33), GPT-5.6 Terra: 60.7 (#21)

BenchmarkGPT-5.2 ProGPT-5.6 Terra
ARC-AGI-254.2%83.9%
SimpleBench57.4%48.9%
NYT Connections (extended)79.3%78.4%
ARC-AGI-190.5%96.5%
Epoch Capabilities Index155.4159.62
Kagi LLM Benchmark—51.3%
CritPt—30%
Chess Puzzles—54%
LMArena Hard Prompts—1468
Mystery Game Puzzles—35%
DTBench—93.3%
LMCA—55%
Surface Evolver Bench—83.8%

Math GPT-5.6 Terra leads

GPT-5.2 Pro: 65.3 (#29), GPT-5.6 Terra: 81.6 (#12)

BenchmarkGPT-5.2 ProGPT-5.6 Terra
FrontierMath (Tiers 1-3)74%86%
FrontierMath Tier 446%70.7%
OTIS Mock AIME 2024-2025—99.7%
ProofBench—74%
LMArena Math—1466
FrontierMath Tier 4 (v1)31.3%—

Knowledge Not comparable

GPT-5.2 Pro: —, GPT-5.6 Terra: 61.2 (#30)

BenchmarkGPT-5.2 ProGPT-5.6 Terra
GPQA Diamond—93.3%
SimpleQA Verified—43.2%
LMArena Expert—1492

Multimodal Not comparable

GPT-5.2 Pro: —, GPT-5.6 Terra: 47.3 (#11)

BenchmarkGPT-5.2 ProGPT-5.6 Terra
LMArena Vision—1271
Blueprint-Bench 2—30.8%
Furniture Assembly—54.2%
LMArena Document—1472

Multilingual Not comparable

GPT-5.2 Pro: —, GPT-5.6 Terra: 54.4 (#44)

BenchmarkGPT-5.2 ProGPT-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

GPT-5.2 Pro: —, GPT-5.6 Terra: 76.4 (#40)

BenchmarkGPT-5.2 ProGPT-5.6 Terra
LMArena Instruction Following—1454

Long Context Not comparable

GPT-5.2 Pro: —, GPT-5.6 Terra: 44.4 (#68)

BenchmarkGPT-5.2 ProGPT-5.6 Terra
LMArena Longer Query—1451

Writing & Preference Not comparable

GPT-5.2 Pro: —, GPT-5.6 Terra: 70.2 (#23)

BenchmarkGPT-5.2 ProGPT-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 GPT-5.2 Pro better than GPT-5.6 Terra?

GPT-5.6 Terra is the stronger model overall, scoring 59.2 to 52.3 on the Noometry Index.

Which is cheaper, GPT-5.2 Pro or GPT-5.6 Terra?

GPT-5.6 Terra is cheaper. It lists at $2 per million input tokens and $12 per million output tokens; GPT-5.2 Pro lists at $21 and $168.

Which has the bigger context window?

GPT-5.6 Terra does, with 1.05M tokens against 400K.

How many benchmarks do GPT-5.2 Pro and GPT-5.6 Terra share?

7 benchmarks have published results for both models. GPT-5.2 Pro has 8 scored results on Noometry and GPT-5.6 Terra has 52.

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