Model comparison

Claude Sonnet 5 vs Granite 4.1 8b

Claude Sonnet 5 is the stronger model overall, scoring 54.5 to 36.8 on the Noometry Index.

Last verified . 13 shared benchmarks.

Claude Sonnet 5 Anthropic

54.5

Rank #26 Confirmed

Granite 4.1 8b IBM

36.8

Rank #202 Confirmed

Summary

  • They share 13 benchmarks with published results for both. Claude Sonnet 5 scores higher in 8 categories and Granite 4.1 8b in 0 categories; 8 gaps are clear of the uncertainty.
  • The widest gap is in math, where Claude Sonnet 5 leads 66.1 to 33.8.
  • Granite 4.1 8b has downloadable open weights; the other is API-only.

Side by side

Claude Sonnet 5 and Granite 4.1 8b specifications
Claude Sonnet 5Granite 4.1 8b
ProviderAnthropicIBM
Noometry Index54.536.8
Released2026-06-29—
WeightsProprietaryOpen
Context window1M—
Max output128K—
Input $ / M tokens$2—
Output $ / M tokens$10—
Results tracked5113

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Category by category

Coding Claude Sonnet 5 leads

Claude Sonnet 5: 55.5 (#20), Granite 4.1 8b: 29.9 (#291)

Coding benchmarks
BenchmarkClaude Sonnet 5Granite 4.1 8b
LMArena WebDev15401190
LMArena Coding14831313
DeepSWE53.8%—
FrontierCode42.7%—
CursorBench34.1%—
SciCode53.6%—
GSO37.3%—
WeirdML68.8%—
ALE-Bench1,463—

Agentic & Tool Use Not comparable

Claude Sonnet 5: 42.7 (#16), Granite 4.1 8b: —

Agentic & Tool Use benchmarks
BenchmarkClaude Sonnet 5Granite 4.1 8b
APEX-Agents54.5%—
GBAEval65.3%—
LMArena Search1194—
Vending-Bench 26,378—

Reasoning Claude Sonnet 5 leads

Claude Sonnet 5: 48.2 (#37), Granite 4.1 8b: 24.6 (#142)

Reasoning benchmarks
BenchmarkClaude Sonnet 5Granite 4.1 8b
LMArena Hard Prompts14611294
SimpleBench60.6%—
NYT Connections (extended)75.1%—
CritPt16.9%—
Chess Puzzles35%—
Mystery Game Puzzles35%—
DTBench92.5%—
LMCA50%—
Surface Evolver Bench60%—
Bench to the Future 30.14—
Epoch Capabilities Index156.34—
ForecastBench61.1—

Math Claude Sonnet 5 leads

Claude Sonnet 5: 66.1 (#21), Granite 4.1 8b: 33.8 (#167)

Math benchmarks
BenchmarkClaude Sonnet 5Granite 4.1 8b
LMArena Math14671311
FrontierMath (Tiers 1-3)65.6%—
FrontierMath Tier 429.3%—
OTIS Mock AIME 2024-202594.7%—
ProofBench77%—

Knowledge Claude Sonnet 5 leads

Claude Sonnet 5: 55.7 (#42), Granite 4.1 8b: 35.5 (#171)

Knowledge benchmarks
BenchmarkClaude Sonnet 5Granite 4.1 8b
LMArena Expert14911310
GPQA Diamond90.5%—
SimpleQA Verified33.7%—

Multimodal Not comparable

Claude Sonnet 5: 42.4 (#26), Granite 4.1 8b: —

Multimodal benchmarks
BenchmarkClaude Sonnet 5Granite 4.1 8b
LMArena Vision1275—
Blueprint-Bench 224.9%—
LMArena Document1466—

Multilingual Claude Sonnet 5 leads

Claude Sonnet 5: 54.0 (#55), Granite 4.1 8b: 41.8 (#199)

Multilingual benchmarks
BenchmarkClaude Sonnet 5Granite 4.1 8b
LMArena Non-English14311261
LMArena Chinese14751335
LMArena Russian14521238
LMArena French1457—
LMArena German1448—
LMArena Japanese1422—
LMArena Korean1411—
LMArena Spanish1436—

Instruction Following Claude Sonnet 5 leads

Claude Sonnet 5: 76.6 (#39), Granite 4.1 8b: 67.0 (#198)

Instruction Following benchmarks
BenchmarkClaude Sonnet 5Granite 4.1 8b
LMArena Instruction Following14531268

Long Context Claude Sonnet 5 leads

Claude Sonnet 5: 44.8 (#53), Granite 4.1 8b: 38.7 (#188)

Long Context benchmarks
BenchmarkClaude Sonnet 5Granite 4.1 8b
LMArena Longer Query14641275

Writing & Preference Claude Sonnet 5 leads

Claude Sonnet 5: 69.4 (#24), Granite 4.1 8b: 48.3 (#199)

Writing & Preference benchmarks
BenchmarkClaude Sonnet 5Granite 4.1 8b
LMArena Text14431291
LMArena Creative Writing14161249
LMArena Multi-Turn14541269
EQ-Bench Creative Writing1794—
EQ-Bench 41236—

Frequently asked questions

Is Claude Sonnet 5 better than Granite 4.1 8b?

Claude Sonnet 5 is the stronger model overall, scoring 54.5 to 36.8 on the Noometry Index.

Is Claude Sonnet 5 or Granite 4.1 8b better for coding?

Claude Sonnet 5 scores higher on coding benchmarks: 55.5 versus 29.9 in the Noometry coding category.

How many benchmarks do Claude Sonnet 5 and Granite 4.1 8b share?

13 benchmarks have published results for both models. Claude Sonnet 5 has 51 scored results on Noometry and Granite 4.1 8b has 13.

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