Noometry

Model comparison

Claude Sonnet 4.5 vs Gemma 4 26B A4B IT

Claude Sonnet 4.5 and Gemma 4 26B A4B IT score almost the same on the Noometry Index (44.1 vs 43.5), so choose on price, context window or the category you care about most.

Last verified . 27 shared benchmarks.

Claude Sonnet 4.5 Anthropic

44.1

Rank #81 Confirmed

Gemma 4 26B A4B IT Google

43.5

Rank #92 Confirmed

Summary

  • They share 27 benchmarks with published results for both. Claude Sonnet 4.5 scores higher in 7 categories and Gemma 4 26B A4B IT in 2 categories; 7 gaps are clear of the uncertainty.
  • The widest gap is in math, where Gemma 4 26B A4B IT leads 47.6 to 32.3.
  • The biggest single-benchmark swing is WeirdML: 47.7% for Claude Sonnet 4.5 and 35.2% for Gemma 4 26B A4B IT.
  • Gemma 4 26B A4B IT is cheaper at $0.09 / $0.30 per million input/output tokens, against $3 / $15 for Claude Sonnet 4.5.
  • Gemma 4 26B A4B IT accepts more context: 262K tokens versus 200K.
  • Gemma 4 26B A4B IT has downloadable open weights; the other is API-only.

Side by side

Claude Sonnet 4.5Gemma 4 26B A4B IT
ProviderAnthropicGoogle
Noometry Index44.143.5
Released2025-09-292026-04-02
WeightsProprietaryOpen
Context window200K262K
Max output64K33K
Input $ / M tokens$3$0.09
Output $ / M tokens$15$0.30
Results tracked7328

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Category by category

Coding Claude Sonnet 4.5 leads

Claude Sonnet 4.5: 47.3 (#61), Gemma 4 26B A4B IT: 39.0 (#164)

BenchmarkClaude Sonnet 4.5Gemma 4 26B A4B IT
LMArena WebDev13931359
SciCode44.7%40%
WeirdML47.7%35.2%
LMArena Coding14891447
ALE-Bench796.15927.17
SWE-bench Verified71.3%—
SWE-bench Verified (bash only)71.4%—
SWE-bench Multilingual67%—
GSO14.7%—
AlgoTune1.52—

Agentic & Tool Use Not comparable

Claude Sonnet 4.5: 38.3 (#32), Gemma 4 26B A4B IT: —

BenchmarkClaude Sonnet 4.5Gemma 4 26B A4B IT
Terminal-Bench46.5%—
Berkeley Function Calling Leaderboard73.2%—
GDPval42.5%—
Remote Labor Index2.1%—
τ²-bench Airline72%—
τ²-bench Banking25.3%—
τ²-bench Retail72.4%—
τ²-bench Telecom84.9%—
Cybench60%—
DeepResearch Bench52.6%—
OSWorld62.9%—
LMArena Search1159—
METR Time Horizons67.4%—
Vending-Bench 23,839—

Reasoning Claude Sonnet 4.5 leads

Claude Sonnet 4.5: 26.9 (#125), Gemma 4 26B A4B IT: 21.8 (#213)

BenchmarkClaude Sonnet 4.5Gemma 4 26B A4B IT
CritPt1.1%0%
Chess Puzzles12%6%
LMArena Hard Prompts14621439
DTBench83.2%74.9%
LMCA38.8%29.7%
Epoch Capabilities Index146.84141.85
ARC-AGI-213.6%—
SimpleBench54.3%—
Kagi LLM Benchmark57.9%—
NYT Connections (extended)37.3%—
ARC-AGI-163.7%—
EnigmaEval6%—
EBR-Bench2.4%—
Mystery Game Puzzles17%—
ForecastBench61.9—

Math Gemma 4 26B A4B IT leads

Claude Sonnet 4.5: 32.3 (#216), Gemma 4 26B A4B IT: 47.6 (#67)

BenchmarkClaude Sonnet 4.5Gemma 4 26B A4B IT
OTIS Mock AIME 2024-202577.8%82.2%
LMArena Math14491470
FrontierMath (Tiers 1-3)23.9%—
FrontierMath Tier 42.4%—
ProofBench19%—
Omni-MATH55.3%—
MATH Level 597.7%—
FrontierMath (Feb 2025 set)15.2%—
FrontierMath Tier 4 (v1)4.2%—

Knowledge Claude Sonnet 4.5 leads

Claude Sonnet 4.5: 48.4 (#76), Gemma 4 26B A4B IT: 45.7 (#85)

BenchmarkClaude Sonnet 4.5Gemma 4 26B A4B IT
GPQA Diamond82.3%73.2%
Vectara Hallucination Rate12%5.2%
LMArena Expert14821447
Humanity's Last Exam13.7%—
SimpleQA Verified30.7%—
MMLU-Pro86.9%—
GPQA (HELM)68.6%—

Multimodal Gemma 4 26B A4B IT leads

Claude Sonnet 4.5: 34.8 (#89), Gemma 4 26B A4B IT: 40.6 (#46)

BenchmarkClaude Sonnet 4.5Gemma 4 26B A4B IT
LMArena Vision—1260
VPCT39.8%—
LMArena Document1450—

Multilingual Too close to call

Claude Sonnet 4.5: 53.4 (#69), Gemma 4 26B A4B IT: 53.1 (#71)

BenchmarkClaude Sonnet 4.5Gemma 4 26B A4B IT
LMArena Non-English14251421
LMArena Chinese14591495
LMArena French14581460
LMArena Russian14371434
LMArena Spanish14571417
LMArena German1427—
LMArena Japanese1390—
LMArena Korean1403—

Instruction Following Too close to call

Claude Sonnet 4.5: 75.0 (#78), Gemma 4 26B A4B IT: 74.8 (#82)

BenchmarkClaude Sonnet 4.5Gemma 4 26B A4B IT
LMArena Instruction Following14591420
IFEval85%—

Long Context Claude Sonnet 4.5 leads

Claude Sonnet 4.5: 45.2 (#46), Gemma 4 26B A4B IT: 43.6 (#91)

BenchmarkClaude Sonnet 4.5Gemma 4 26B A4B IT
LMArena Longer Query14761428

Writing & Preference Claude Sonnet 4.5 leads

Claude Sonnet 4.5: 66.5 (#34), Gemma 4 26B A4B IT: 58.6 (#115)

BenchmarkClaude Sonnet 4.5Gemma 4 26B A4B IT
LMArena Text14391434
LMArena Creative Writing14421402
EQ-Bench Creative Writing16781305
LMArena Multi-Turn14651441
WildBench85.4%—

Frequently asked questions

Is Claude Sonnet 4.5 better than Gemma 4 26B A4B IT?

Claude Sonnet 4.5 and Gemma 4 26B A4B IT score almost the same on the Noometry Index (44.1 vs 43.5), so choose on price, context window or the category you care about most.

Which is cheaper, Claude Sonnet 4.5 or Gemma 4 26B A4B IT?

Gemma 4 26B A4B IT is cheaper. It lists at $0.09 per million input tokens and $0.30 per million output tokens; Claude Sonnet 4.5 lists at $3 and $15.

Is Claude Sonnet 4.5 or Gemma 4 26B A4B IT better for coding?

Claude Sonnet 4.5 scores higher on coding benchmarks: 47.3 versus 39.0 in the Noometry coding category.

Which has the bigger context window?

Gemma 4 26B A4B IT does, with 262K tokens against 200K.

How many benchmarks do Claude Sonnet 4.5 and Gemma 4 26B A4B IT share?

27 benchmarks have published results for both models. Claude Sonnet 4.5 has 73 scored results on Noometry and Gemma 4 26B A4B IT has 28.

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