Noometry

Model comparison

Kimi K2.5 vs Yi-1.5-34B

Kimi K2.5 is the stronger model overall, scoring 48.1 to 30.6 on the Noometry Index.

Last verified . 18 shared benchmarks.

Kimi K2.5 Moonshot AI

48.1

Rank #57 Confirmed

Yi-1.5-34B 01.AI

30.6

Rank #289 Confirmed

Summary

  • They share 18 benchmarks with published results for both. Kimi K2.5 scores higher in 8 categories and Yi-1.5-34B in 0 categories; 8 gaps are clear of the uncertainty.
  • The widest gap is in knowledge, where Kimi K2.5 leads 53.6 to 14.8.
  • The biggest single-benchmark swing is GPQA Diamond: 87.6% for Kimi K2.5 and 32% for Yi-1.5-34B.

Side by side

Kimi K2.5Yi-1.5-34B
ProviderMoonshot AI01.AI
Noometry Index48.130.6
Released2026-01-272024-05-13
WeightsOpenOpen
Context window262K—
Max output262K—
Input $ / M tokens$0.45—
Output $ / M tokens$2.25—
Results tracked5121

Sponsored placements are available on pages like this one. Advertise on Noometry

Category by category

Coding Kimi K2.5 leads

Kimi K2.5: 48.8 (#53), Yi-1.5-34B: 32.4 (#272)

BenchmarkKimi K2.5Yi-1.5-34B
LMArena Coding14741169
SWE-bench Verified73.8%—
SWE-bench Verified (bash only)70.8%—
LMArena WebDev1437—
SWE-bench Multilingual67.3%—
SciCode49%—
WeirdML45.6%—
BigCodeBench Instruct—33.9%
BigCodeBench Complete—43.8%
ALE-Bench821.65—

Agentic & Tool Use Not comparable

Kimi K2.5: 34.2 (#48), Yi-1.5-34B: —

BenchmarkKimi K2.5Yi-1.5-34B
Terminal-Bench43.2%—
OSWorld63.3%—
Vending-Bench 21,198—

Reasoning Kimi K2.5 leads

Kimi K2.5: 31.2 (#80), Yi-1.5-34B: 22.5 (#191)

BenchmarkKimi K2.5Yi-1.5-34B
LMArena Hard Prompts14531160
ARC-AGI-211.8%—
SimpleBench46.8%—
Kagi LLM Benchmark78.5%—
NYT Connections (extended)69.9%—
ARC-AGI-165.3%—
CritPt3.1%—
Chess Puzzles12%—
EnigmaEval3.4%—
Thematic Generalization69.4%—
Epoch Capabilities Index148.03—

Math Kimi K2.5 leads

Kimi K2.5: 51.8 (#53), Yi-1.5-34B: 27.5 (#249)

BenchmarkKimi K2.5Yi-1.5-34B
LMArena Math14701182
MathArena Final-Answer Competitions62.3%—
OTIS Mock AIME 2024-202592.2%—
MATH Level 5—25.5%
FrontierMath (Feb 2025 set)27.9%—
FrontierMath Tier 4 (v1)4.2%—

Knowledge Kimi K2.5 leads

Kimi K2.5: 53.6 (#56), Yi-1.5-34B: 14.8 (#295)

BenchmarkKimi K2.5Yi-1.5-34B
GPQA Diamond87.6%32%
LMArena Expert14661144
Humanity's Last Exam24.4%—
SimpleQA Verified34.3%—
Vectara Hallucination Rate14.2%—

Multimodal Not comparable

Kimi K2.5: 41.1 (#39), Yi-1.5-34B: —

BenchmarkKimi K2.5Yi-1.5-34B
LMArena Vision1269—
LMArena Document1430—

Multilingual Kimi K2.5 leads

Kimi K2.5: 53.9 (#53), Yi-1.5-34B: 32.3 (#256)

BenchmarkKimi K2.5Yi-1.5-34B
LMArena Non-English14331121
LMArena Chinese14951213
LMArena French14541156
LMArena German14411111
LMArena Japanese14211021
LMArena Korean14101005
LMArena Russian14351091
LMArena Spanish14501121

Instruction Following Kimi K2.5 leads

Kimi K2.5: 75.3 (#64), Yi-1.5-34B: 59.2 (#257)

BenchmarkKimi K2.5Yi-1.5-34B
LMArena Instruction Following14311139

Long Context Kimi K2.5 leads

Kimi K2.5: 52.1 (#7), Yi-1.5-34B: 34.6 (#248)

BenchmarkKimi K2.5Yi-1.5-34B
LMArena Longer Query14451143
Fiction.LiveBench86.1%—
CL-bench19.3%—
CL-bench Life13.2%—

Writing & Preference Kimi K2.5 leads

Kimi K2.5: 65.1 (#53), Yi-1.5-34B: 37.4 (#257)

BenchmarkKimi K2.5Yi-1.5-34B
LMArena Text14451173
LMArena Creative Writing14231135
LMArena Multi-Turn14441153
EQ-Bench Creative Writing1579—

Frequently asked questions

Is Kimi K2.5 better than Yi-1.5-34B?

Kimi K2.5 is the stronger model overall, scoring 48.1 to 30.6 on the Noometry Index.

Is Kimi K2.5 or Yi-1.5-34B better for coding?

Kimi K2.5 scores higher on coding benchmarks: 48.8 versus 32.4 in the Noometry coding category.

How many benchmarks do Kimi K2.5 and Yi-1.5-34B share?

18 benchmarks have published results for both models. Kimi K2.5 has 51 scored results on Noometry and Yi-1.5-34B has 21.

Related comparisons

Go deeper