Noometry

Model comparison

GPT-5.6 Terra vs Kimi K2.7 Code

GPT-5.6 Terra is the stronger model overall, scoring 59.2 to 43.3 on the Noometry Index. Kimi K2.7 Code costs 2.6× less per token, which makes it the better buy when GPT-5.6 Terra's lead doesn't matter for your workload.

Last verified . 18 shared benchmarks.

GPT-5.6 Terra OpenAI

59.2

Rank #17 Confirmed

Kimi K2.7 Code Moonshot AI

43.3

Rank #94 Confirmed

Summary

  • They share 18 benchmarks with published results for both. GPT-5.6 Terra scores higher in 5 categories and Kimi K2.7 Code in 0 categories; 5 gaps are clear of the uncertainty.
  • The widest gap is in math, where GPT-5.6 Terra leads 81.6 to 52.9.
  • The biggest single-benchmark swing is FrontierMath Tier 4: 70.7% for GPT-5.6 Terra and 12.2% for Kimi K2.7 Code.
  • Kimi K2.7 Code is cheaper at $0.95 / $4 per million input/output tokens, against $2 / $12 for GPT-5.6 Terra.
  • GPT-5.6 Terra accepts more context: 1.05M tokens versus 262K.
  • Kimi K2.7 Code has downloadable open weights; the other is API-only.

Side by side

GPT-5.6 TerraKimi K2.7 Code
ProviderOpenAIMoonshot AI
Noometry Index59.243.3
Released2026-07-092026-06-12
WeightsProprietaryOpen
Context window1.05M262K
Max output128K262K
Input $ / M tokens$2$0.95
Output $ / M tokens$12$4
Results tracked5219

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Category by category

Coding GPT-5.6 Terra leads

GPT-5.6 Terra: 57.7 (#19), Kimi K2.7 Code: 42.9 (#95)

BenchmarkGPT-5.6 TerraKimi K2.7 Code
DeepSWE69.6%30.5%
FrontierCode41.3%30.1%
LMArena WebDev15221473
SciCode55%47.5%
WeirdML78.3%54.1%
ALE-Bench1,951886.23
CursorBench41.3%—
LMArena Coding1484—

Agentic & Tool Use GPT-5.6 Terra leads

GPT-5.6 Terra: 40.1 (#25), Kimi K2.7 Code: 24.0 (#122)

BenchmarkGPT-5.6 TerraKimi K2.7 Code
APEX-Agents58.2%37.6%
Vending-Bench 27,3435,083
BALROG53.2%—
GBAEval—0.9%
GDP.pdf24.7%—

Reasoning GPT-5.6 Terra leads

GPT-5.6 Terra: 60.7 (#21), Kimi K2.7 Code: 39.0 (#61)

BenchmarkGPT-5.6 TerraKimi K2.7 Code
SimpleBench48.9%57.9%
CritPt30%10%
Chess Puzzles54%21%
Surface Evolver Bench83.8%48.8%
Epoch Capabilities Index159.62149.97
ARC-AGI-283.9%—
Kagi LLM Benchmark51.3%—
NYT Connections (extended)78.4%—
ARC-AGI-196.5%—
LMArena Hard Prompts1468—
Mystery Game Puzzles35%—
DTBench93.3%—
LMCA55%—

Math GPT-5.6 Terra leads

GPT-5.6 Terra: 81.6 (#12), Kimi K2.7 Code: 52.9 (#48)

BenchmarkGPT-5.6 TerraKimi K2.7 Code
FrontierMath (Tiers 1-3)86%54%
FrontierMath Tier 470.7%12.2%
OTIS Mock AIME 2024-202599.7%95.6%
ProofBench74%—
LMArena Math1466—

Knowledge GPT-5.6 Terra leads

GPT-5.6 Terra: 61.2 (#30), Kimi K2.7 Code: 53.5 (#57)

BenchmarkGPT-5.6 TerraKimi K2.7 Code
GPQA Diamond93.3%87.9%
SimpleQA Verified43.2%36.5%
LMArena Expert1492—

Multimodal Not comparable

GPT-5.6 Terra: 47.3 (#11), Kimi K2.7 Code: —

BenchmarkGPT-5.6 TerraKimi K2.7 Code
LMArena Vision1271—
Blueprint-Bench 230.8%—
Furniture Assembly54.2%—
LMArena Document1472—

Multilingual Not comparable

GPT-5.6 Terra: 54.4 (#44), Kimi K2.7 Code: —

BenchmarkGPT-5.6 TerraKimi K2.7 Code
LMArena Non-English1439—
LMArena Chinese1513—
LMArena French1471—
LMArena German1460—
LMArena Japanese1457—
LMArena Korean1425—
LMArena Russian1450—
LMArena Spanish1448—

Instruction Following Not comparable

GPT-5.6 Terra: 76.4 (#40), Kimi K2.7 Code: —

BenchmarkGPT-5.6 TerraKimi K2.7 Code
LMArena Instruction Following1454—

Long Context Not comparable

GPT-5.6 Terra: 44.4 (#68), Kimi K2.7 Code: —

BenchmarkGPT-5.6 TerraKimi K2.7 Code
LMArena Longer Query1451—

Writing & Preference Not comparable

GPT-5.6 Terra: 70.2 (#23), Kimi K2.7 Code: —

BenchmarkGPT-5.6 TerraKimi K2.7 Code
LMArena Text1447—
LMArena Creative Writing1410—
EQ-Bench Creative Writing1855—
EQ-Bench 41234—
LMArena Multi-Turn1449—

Frequently asked questions

Is GPT-5.6 Terra better than Kimi K2.7 Code?

GPT-5.6 Terra is the stronger model overall, scoring 59.2 to 43.3 on the Noometry Index. Kimi K2.7 Code costs 2.6× less per token, which makes it the better buy when GPT-5.6 Terra's lead doesn't matter for your workload.

Which is cheaper, GPT-5.6 Terra or Kimi K2.7 Code?

Kimi K2.7 Code is cheaper. It lists at $0.95 per million input tokens and $4 per million output tokens; GPT-5.6 Terra lists at $2 and $12.

Is GPT-5.6 Terra or Kimi K2.7 Code better for coding?

GPT-5.6 Terra scores higher on coding benchmarks: 57.7 versus 42.9 in the Noometry coding category.

Which has the bigger context window?

GPT-5.6 Terra does, with 1.05M tokens against 262K.

How many benchmarks do GPT-5.6 Terra and Kimi K2.7 Code share?

18 benchmarks have published results for both models. GPT-5.6 Terra has 52 scored results on Noometry and Kimi K2.7 Code has 19.

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