Noometry

Model comparison

Grok 4 vs Yi-1.5-34B

Grok 4 is the stronger model overall, scoring 48.1 to 30.6 on the Noometry Index.

Last verified . 18 shared benchmarks.

Grok 4 xAI

48.1

Rank #56 Confirmed

Yi-1.5-34B 01.AI

30.6

Rank #289 Confirmed

Summary

  • They share 18 benchmarks with published results for both. Grok 4 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 Grok 4 leads 53.8 to 14.8.
  • The biggest single-benchmark swing is GPQA Diamond: 87% for Grok 4 and 32% for Yi-1.5-34B.
  • Yi-1.5-34B has downloadable open weights; the other is API-only.

Side by side

Grok 4Yi-1.5-34B
ProviderxAI01.AI
Noometry Index48.130.6
Released2025-07-092024-05-13
WeightsProprietaryOpen
Context window——
Max output——
Input $ / M tokens——
Output $ / M tokens——
Results tracked4821

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Category by category

Coding Grok 4 leads

Grok 4: 50.3 (#46), Yi-1.5-34B: 32.4 (#272)

BenchmarkGrok 4Yi-1.5-34B
LMArena Coding14081169
Aider Polyglot79.6%—
WeirdML45.7%—
BigCodeBench Instruct—33.9%
BigCodeBench Complete—43.8%

Agentic & Tool Use Not comparable

Grok 4: 32.3 (#68), Yi-1.5-34B: —

BenchmarkGrok 4Yi-1.5-34B
Terminal-Bench27.2%—
Berkeley Function Calling Leaderboard63%—
GDPval21.1%—
Cybench43%—
DeepResearch Bench47.3%—
BALROG43.6%—
LMArena Search1142—
METR Time Horizons66.6%—

Reasoning Grok 4 leads

Grok 4: 36.7 (#65), Yi-1.5-34B: 22.5 (#191)

BenchmarkGrok 4Yi-1.5-34B
LMArena Hard Prompts14091160
ARC-AGI-216%—
SimpleBench60.5%—
Kagi LLM Benchmark73.6%—
ARC-AGI-166.7%—
Chess Puzzles28%—
Epoch Capabilities Index146.44—
ForecastBench60.9—

Math Grok 4 leads

Grok 4: 48.4 (#64), Yi-1.5-34B: 27.5 (#249)

BenchmarkGrok 4Yi-1.5-34B
LMArena Math14221182
OTIS Mock AIME 2024-202584%—
Omni-MATH60.3%—
MATH Level 5—25.5%
FrontierMath (Feb 2025 set)19.7%—
FrontierMath Tier 4 (v1)2.1%—

Knowledge Grok 4 leads

Grok 4: 53.8 (#55), Yi-1.5-34B: 14.8 (#295)

BenchmarkGrok 4Yi-1.5-34B
GPQA Diamond87%32%
LMArena Expert14151144
MMLU-Pro85.1%—
Confabulations12.4%—
GPQA (HELM)72.7%—

Multimodal Not comparable

Grok 4: 33.7 (#94), Yi-1.5-34B: —

BenchmarkGrok 4Yi-1.5-34B
LMArena Vision1210—
GeoBench45%—

Multilingual Grok 4 leads

Grok 4: 51.8 (#103), Yi-1.5-34B: 32.3 (#256)

BenchmarkGrok 4Yi-1.5-34B
LMArena Non-English14031121
LMArena Chinese14271213
LMArena French14181156
LMArena German14291111
LMArena Japanese13941021
LMArena Korean13771005
LMArena Russian14101091
LMArena Spanish14201121

Instruction Following Grok 4 leads

Grok 4: 79.2 (#5), Yi-1.5-34B: 59.2 (#257)

BenchmarkGrok 4Yi-1.5-34B
LMArena Instruction Following13871139
IFEval94.9%—

Long Context Grok 4 leads

Grok 4: 63.1 (#4), Yi-1.5-34B: 34.6 (#248)

BenchmarkGrok 4Yi-1.5-34B
LMArena Longer Query14091143
Fiction.LiveBench94.4%—

Writing & Preference Grok 4 leads

Grok 4: 58.5 (#116), Yi-1.5-34B: 37.4 (#257)

BenchmarkGrok 4Yi-1.5-34B
LMArena Text14111173
LMArena Creative Writing13971135
LMArena Multi-Turn14161153
Short-Story Creative Writing76.9%—
WildBench79.7%—

Frequently asked questions

Is Grok 4 better than Yi-1.5-34B?

Grok 4 is the stronger model overall, scoring 48.1 to 30.6 on the Noometry Index.

Is Grok 4 or Yi-1.5-34B better for coding?

Grok 4 scores higher on coding benchmarks: 50.3 versus 32.4 in the Noometry coding category.

How many benchmarks do Grok 4 and Yi-1.5-34B share?

18 benchmarks have published results for both models. Grok 4 has 48 scored results on Noometry and Yi-1.5-34B has 21.

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