Noometry

Model comparison

Gemini 2.5 Pro vs Kimi K2.5

Kimi K2.5 is the stronger model overall, scoring 48.1 to 45.0 on the Noometry Index.

Last verified . 43 shared benchmarks.

Gemini 2.5 Pro Google

45.0

Rank #75 Confirmed

Kimi K2.5 Moonshot AI

48.1

Rank #57 Confirmed

Summary

  • They share 43 benchmarks with published results for both. Gemini 2.5 Pro scores higher in 4 categories and Kimi K2.5 in 6 categories; 9 gaps are clear of the uncertainty.
  • The widest gap is in math, where Kimi K2.5 leads 51.8 to 32.5.
  • The biggest single-benchmark swing is ARC-AGI-1: 41% for Gemini 2.5 Pro and 65.3% for Kimi K2.5.
  • Kimi K2.5 is cheaper at $0.45 / $2.25 per million input/output tokens, against $1.25 / $10 for Gemini 2.5 Pro.
  • Gemini 2.5 Pro accepts more context: 1.05M tokens versus 262K.
  • Kimi K2.5 has downloadable open weights; the other is API-only.

Side by side

Gemini 2.5 ProKimi K2.5
ProviderGoogleMoonshot AI
Noometry Index45.048.1
Released2025-03-252026-01-27
WeightsProprietaryOpen
Context window1.05M262K
Max output66K262K
Input $ / M tokens$1.25$0.45
Output $ / M tokens$10$2.25
Results tracked7851

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Category by category

Coding Kimi K2.5 leads

Gemini 2.5 Pro: 42.4 (#101), Kimi K2.5: 48.8 (#53)

BenchmarkGemini 2.5 ProKimi K2.5
SWE-bench Verified57.6%73.8%
SWE-bench Verified (bash only)53.6%70.8%
LMArena WebDev12271437
SciCode42.8%49%
WeirdML54%45.6%
LMArena Coding14521474
ALE-Bench785.52821.65
Aider Polyglot83.1%—
SWE-bench Multilingual—67.3%
GSO3.9%—
LiveBench Coding85.9%—
CadEval64%—
AlgoTune1.51—

Agentic & Tool Use Kimi K2.5 leads

Gemini 2.5 Pro: 29.2 (#88), Kimi K2.5: 34.2 (#48)

BenchmarkGemini 2.5 ProKimi K2.5
Terminal-Bench32.6%43.2%
Vending-Bench 2573.641,198
GDPval23.3%—
Remote Labor Index0.8%—
TheAgentCompany30.3%—
τ²-bench Banking13.7%—
DeepResearch Bench42.8%—
OSWorld—63.3%
BALROG43.3%—
LMArena Search1142—
METR Time Horizons55.4%—

Reasoning Kimi K2.5 leads

Gemini 2.5 Pro: 28.8 (#99), Kimi K2.5: 31.2 (#80)

BenchmarkGemini 2.5 ProKimi K2.5
ARC-AGI-24.9%11.8%
SimpleBench62.4%46.8%
Kagi LLM Benchmark70.3%78.5%
ARC-AGI-141%65.3%
CritPt2%3.1%
Chess Puzzles20%12%
EnigmaEval5.6%3.4%
LMArena Hard Prompts14551453
Epoch Capabilities Index145.32148.03
NYT Connections (extended)—69.9%
Thematic Generalization—69.4%
LiveBench Reasoning89.8%—
DTBench82.4%—
LiveBench Data Analysis79.9%—
LMCA34.8%—
ForecastBench61.3—
LiveBench82.3%—

Math Kimi K2.5 leads

Gemini 2.5 Pro: 32.5 (#213), Kimi K2.5: 51.8 (#53)

BenchmarkGemini 2.5 ProKimi K2.5
OTIS Mock AIME 2024-202584.7%92.2%
LMArena Math14501470
FrontierMath (Feb 2025 set)14.1%27.9%
FrontierMath Tier 4 (v1)4.2%4.2%
FrontierMath (Tiers 1-3)24.6%—
FrontierMath Tier 40%—
MathArena Final-Answer Competitions—62.3%
Omni-MATH41.6%—
LiveBench Math90.2%—
MATH Level 595.9%—

Knowledge Gemini 2.5 Pro leads

Gemini 2.5 Pro: 56.0 (#46), Kimi K2.5: 53.6 (#56)

BenchmarkGemini 2.5 ProKimi K2.5
GPQA Diamond85.3%87.6%
Humanity's Last Exam21.6%24.4%
Vectara Hallucination Rate7%14.2%
LMArena Expert14521466
SimpleQA Verified—34.3%
MMLU-Pro86.3%—
Confabulations10.6%—
GPQA (HELM)74.9%—

Multimodal Gemini 2.5 Pro leads

Gemini 2.5 Pro: 45.2 (#18), Kimi K2.5: 41.1 (#39)

BenchmarkGemini 2.5 ProKimi K2.5
LMArena Vision12631269
LMArena Document14211430
GeoBench86%—
VPCT48%—
SpatialViz-Bench44.7%—

Multilingual Gemini 2.5 Pro leads

Gemini 2.5 Pro: 55.3 (#31), Kimi K2.5: 53.9 (#53)

BenchmarkGemini 2.5 ProKimi K2.5
LMArena Non-English14511433
LMArena Chinese15071495
LMArena French14721454
LMArena German14871441
LMArena Japanese14611421
LMArena Korean14341410
LMArena Russian14611435
LMArena Spanish14731450

Instruction Following Too close to call

Gemini 2.5 Pro: 75.0 (#75), Kimi K2.5: 75.3 (#64)

BenchmarkGemini 2.5 ProKimi K2.5
LMArena Instruction Following14371431
LiveBench Instruction Following80.6%—
IFEval84%—

Long Context Gemini 2.5 Pro leads

Gemini 2.5 Pro: 59.8 (#5), Kimi K2.5: 52.1 (#7)

BenchmarkGemini 2.5 ProKimi K2.5
Fiction.LiveBench91.7%86.1%
LMArena Longer Query14491445
CL-bench—19.3%
CL-bench Life—13.2%

Writing & Preference Kimi K2.5 leads

Gemini 2.5 Pro: 63.7 (#62), Kimi K2.5: 65.1 (#53)

BenchmarkGemini 2.5 ProKimi K2.5
LMArena Text14581445
LMArena Creative Writing14541423
EQ-Bench Creative Writing14211579
LMArena Multi-Turn14531444
Short-Story Creative Writing83.8%—
WildBench85.7%—
LiveBench Language67.8%—

Frequently asked questions

Is Gemini 2.5 Pro better than Kimi K2.5?

Kimi K2.5 is the stronger model overall, scoring 48.1 to 45.0 on the Noometry Index.

Which is cheaper, Gemini 2.5 Pro or Kimi K2.5?

Kimi K2.5 is cheaper. It lists at $0.45 per million input tokens and $2.25 per million output tokens; Gemini 2.5 Pro lists at $1.25 and $10.

Is Gemini 2.5 Pro or Kimi K2.5 better for coding?

Kimi K2.5 scores higher on coding benchmarks: 48.8 versus 42.4 in the Noometry coding category.

Which has the bigger context window?

Gemini 2.5 Pro does, with 1.05M tokens against 262K.

How many benchmarks do Gemini 2.5 Pro and Kimi K2.5 share?

43 benchmarks have published results for both models. Gemini 2.5 Pro has 78 scored results on Noometry and Kimi K2.5 has 51.

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