Noometry

Model comparison

Granite 3.1 8b Instruct vs Grok 4.20 Multi-Agent

Grok 4.20 Multi-Agent is the stronger model overall, scoring 46.2 to 32.4 on the Noometry Index.

Last verified . 12 shared benchmarks.

Granite 3.1 8b Instruct IBM

32.4

Rank #258 Confirmed

Grok 4.20 Multi-Agent xAI

46.2

Rank #65 Confirmed

Summary

  • They share 12 benchmarks with published results for both. Granite 3.1 8b Instruct scores higher in 0 categories and Grok 4.20 Multi-Agent in 8 categories; 8 gaps are clear of the uncertainty.
  • The widest gap is in writing & preference, where Grok 4.20 Multi-Agent leads 64.0 to 35.5.
  • Granite 3.1 8b Instruct has downloadable open weights; the other is API-only.

Side by side

Granite 3.1 8b InstructGrok 4.20 Multi-Agent
ProviderIBMxAI
Noometry Index32.446.2
Released—2026-03-09
WeightsOpenProprietary
Context window—1M
Max output—30K
Input $ / M tokens—$1.25
Output $ / M tokens—$2.50
Results tracked1320

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

Category by category

Coding Grok 4.20 Multi-Agent leads

Granite 3.1 8b Instruct: 34.5 (#233), Grok 4.20 Multi-Agent: 43.0 (#92)

BenchmarkGranite 3.1 8b InstructGrok 4.20 Multi-Agent
LMArena Coding11861457

Agentic & Tool Use Not comparable

Granite 3.1 8b Instruct: 24.1 (#120), Grok 4.20 Multi-Agent: —

BenchmarkGranite 3.1 8b InstructGrok 4.20 Multi-Agent
Berkeley Function Calling Leaderboard27.1%—
LMArena Search—1204

Reasoning Grok 4.20 Multi-Agent leads

Granite 3.1 8b Instruct: 22.1 (#207), Grok 4.20 Multi-Agent: 43.9 (#48)

BenchmarkGranite 3.1 8b InstructGrok 4.20 Multi-Agent
LMArena Hard Prompts11451448
NYT Connections (extended)—89.6%

Math Grok 4.20 Multi-Agent leads

Granite 3.1 8b Instruct: 33.0 (#209), Grok 4.20 Multi-Agent: 39.4 (#104)

BenchmarkGranite 3.1 8b InstructGrok 4.20 Multi-Agent
LMArena Math11521442

Knowledge Grok 4.20 Multi-Agent leads

Granite 3.1 8b Instruct: 31.1 (#220), Grok 4.20 Multi-Agent: 40.4 (#119)

BenchmarkGranite 3.1 8b InstructGrok 4.20 Multi-Agent
LMArena Expert11421445

Multimodal Not comparable

Granite 3.1 8b Instruct: —, Grok 4.20 Multi-Agent: 40.5 (#48)

BenchmarkGranite 3.1 8b InstructGrok 4.20 Multi-Agent
LMArena Vision—1259

Multilingual Grok 4.20 Multi-Agent leads

Granite 3.1 8b Instruct: 30.9 (#260), Grok 4.20 Multi-Agent: 54.4 (#43)

BenchmarkGranite 3.1 8b InstructGrok 4.20 Multi-Agent
LMArena Non-English10991440
LMArena Chinese11451475
LMArena Russian10921457
LMArena French—1466
LMArena German—1456
LMArena Japanese—1405
LMArena Korean—1416
LMArena Spanish—1447

Instruction Following Grok 4.20 Multi-Agent leads

Granite 3.1 8b Instruct: 58.6 (#259), Grok 4.20 Multi-Agent: 74.8 (#84)

BenchmarkGranite 3.1 8b InstructGrok 4.20 Multi-Agent
LMArena Instruction Following11311420

Long Context Grok 4.20 Multi-Agent leads

Granite 3.1 8b Instruct: 35.2 (#241), Grok 4.20 Multi-Agent: 43.7 (#88)

BenchmarkGranite 3.1 8b InstructGrok 4.20 Multi-Agent
LMArena Longer Query11621431

Writing & Preference Grok 4.20 Multi-Agent leads

Granite 3.1 8b Instruct: 35.5 (#266), Grok 4.20 Multi-Agent: 64.0 (#59)

BenchmarkGranite 3.1 8b InstructGrok 4.20 Multi-Agent
LMArena Text11501450
LMArena Creative Writing11291436
LMArena Multi-Turn11081452

Frequently asked questions

Is Granite 3.1 8b Instruct better than Grok 4.20 Multi-Agent?

Grok 4.20 Multi-Agent is the stronger model overall, scoring 46.2 to 32.4 on the Noometry Index.

Is Granite 3.1 8b Instruct or Grok 4.20 Multi-Agent better for coding?

Grok 4.20 Multi-Agent scores higher on coding benchmarks: 43.0 versus 34.5 in the Noometry coding category.

How many benchmarks do Granite 3.1 8b Instruct and Grok 4.20 Multi-Agent share?

12 benchmarks have published results for both models. Granite 3.1 8b Instruct has 13 scored results on Noometry and Grok 4.20 Multi-Agent has 20.

Related comparisons

Go deeper