Noometry

Model comparison

Kimi K2.5 Instant vs Llama 3.1-405B

Kimi K2.5 Instant is the stronger model overall, scoring 43.6 to 30.7 on the Noometry Index.

Last verified . 16 shared benchmarks.

Kimi K2.5 Instant Moonshot AI

43.6

Rank #89 Confirmed

Llama 3.1-405B Meta

30.7

Rank #288 Confirmed

Summary

  • They share 16 benchmarks with published results for both. Kimi K2.5 Instant scores higher in 8 categories and Llama 3.1-405B in 0 categories; 8 gaps are clear of the uncertainty.
  • The widest gap is in writing & preference, where Kimi K2.5 Instant leads 60.6 to 38.9.

Side by side

Kimi K2.5 InstantLlama 3.1-405B
ProviderMoonshot AIMeta
Noometry Index43.630.7
Released—2024-07-23
WeightsOpenOpen
Context window——
Max output——
Input $ / M tokens——
Output $ / M tokens——
Results tracked1842

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Category by category

Coding Kimi K2.5 Instant leads

Kimi K2.5 Instant: 42.6 (#97), Llama 3.1-405B: 33.1 (#262)

BenchmarkKimi K2.5 InstantLlama 3.1-405B
LMArena Coding14841291
LMArena WebDev1404—
WeirdML—21.4%

Agentic & Tool Use Not comparable

Kimi K2.5 Instant: —, Llama 3.1-405B: 21.0 (#140)

BenchmarkKimi K2.5 InstantLlama 3.1-405B
TheAgentCompany—7.4%
Cybench—7.5%

Reasoning Kimi K2.5 Instant leads

Kimi K2.5 Instant: 29.7 (#90), Llama 3.1-405B: 16.8 (#300)

BenchmarkKimi K2.5 InstantLlama 3.1-405B
LMArena Hard Prompts14431269
SimpleBench—23%
Kagi LLM Benchmark—45%
DTBench—61.4%
BIG-Bench Hard—82.9%
Epoch Capabilities Index—128.75
ForecastBench—59.9
HellaSwag—89.2%
PIQA—85.9%
WinoGrande—89.2%

Math Kimi K2.5 Instant leads

Kimi K2.5 Instant: 39.4 (#105), Llama 3.1-405B: 18.4 (#290)

BenchmarkKimi K2.5 InstantLlama 3.1-405B
LMArena Math14421281
OTIS Mock AIME 2024-2025—9.7%
Omni-MATH—24.9%
MATH Level 5—49.8%

Knowledge Kimi K2.5 Instant leads

Kimi K2.5 Instant: 40.2 (#123), Llama 3.1-405B: 30.4 (#227)

BenchmarkKimi K2.5 InstantLlama 3.1-405B
LMArena Expert14401243
GPQA Diamond—50.9%
MMLU-Pro—72.3%
Confabulations—17.6%
GPQA (HELM)—52.2%
ARC (AI2) Challenge—95.3%
MMLU—84.5%
TriviaQA—82.7%

Multimodal Not comparable

Kimi K2.5 Instant: 40.2 (#50), Llama 3.1-405B: —

BenchmarkKimi K2.5 InstantLlama 3.1-405B
LMArena Vision1254—

Multilingual Kimi K2.5 Instant leads

Kimi K2.5 Instant: 52.0 (#94), Llama 3.1-405B: 40.7 (#214)

BenchmarkKimi K2.5 InstantLlama 3.1-405B
LMArena Non-English14061248
LMArena Chinese14491242
LMArena French14031279
LMArena German14131252
LMArena Korean13781184
LMArena Russian14041265
LMArena Spanish14471260
LMArena Japanese—1208

Instruction Following Kimi K2.5 Instant leads

Kimi K2.5 Instant: 75.3 (#65), Llama 3.1-405B: 65.9 (#214)

BenchmarkKimi K2.5 InstantLlama 3.1-405B
LMArena Instruction Following14301259
IFEval—81.1%

Long Context Kimi K2.5 Instant leads

Kimi K2.5 Instant: 43.9 (#83), Llama 3.1-405B: 38.4 (#197)

BenchmarkKimi K2.5 InstantLlama 3.1-405B
LMArena Longer Query14351266

Writing & Preference Kimi K2.5 Instant leads

Kimi K2.5 Instant: 60.6 (#95), Llama 3.1-405B: 38.9 (#251)

BenchmarkKimi K2.5 InstantLlama 3.1-405B
LMArena Text14201284
LMArena Creative Writing13811262
LMArena Multi-Turn14271297
EQ-Bench Creative Writing—870
WildBench—78.3%

Frequently asked questions

Is Kimi K2.5 Instant better than Llama 3.1-405B?

Kimi K2.5 Instant is the stronger model overall, scoring 43.6 to 30.7 on the Noometry Index.

Is Kimi K2.5 Instant or Llama 3.1-405B better for coding?

Kimi K2.5 Instant scores higher on coding benchmarks: 42.6 versus 33.1 in the Noometry coding category.

How many benchmarks do Kimi K2.5 Instant and Llama 3.1-405B share?

16 benchmarks have published results for both models. Kimi K2.5 Instant has 18 scored results on Noometry and Llama 3.1-405B has 42.

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