Noometry

Model comparison

Claude Sonnet 4.5 vs Gemma 3 27B

Claude Sonnet 4.5 is the stronger model overall, scoring 44.1 to 30.8 on the Noometry Index. Gemma 3 27B costs 60× less per token, which makes it the better buy when Claude Sonnet 4.5's lead doesn't matter for your workload.

Last verified . 30 shared benchmarks.

Claude Sonnet 4.5 Anthropic

44.1

Rank #81 Confirmed

Gemma 3 27B Google

30.8

Rank #284 Confirmed

Summary

  • They share 30 benchmarks with published results for both. Claude Sonnet 4.5 scores higher in 10 categories and Gemma 3 27B in 0 categories; 10 gaps are clear of the uncertainty.
  • The widest gap is in coding, where Claude Sonnet 4.5 leads 47.3 to 22.5.
  • The biggest single-benchmark swing is OTIS Mock AIME 2024-2025: 77.8% for Claude Sonnet 4.5 and 22.5% for Gemma 3 27B.
  • Gemma 3 27B is cheaper at $0.08 / $0.16 per million input/output tokens, against $3 / $15 for Claude Sonnet 4.5.
  • Claude Sonnet 4.5 accepts more context: 200K tokens versus 131K.
  • Gemma 3 27B has downloadable open weights; the other is API-only.

Side by side

Claude Sonnet 4.5Gemma 3 27B
ProviderAnthropicGoogle
Noometry Index44.130.8
Released2025-09-292025-03-11
WeightsProprietaryOpen
Context window200K131K
Max output64K8K
Input $ / M tokens$3$0.08
Output $ / M tokens$15$0.16
Results tracked7343

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

Category by category

Coding Claude Sonnet 4.5 leads

Claude Sonnet 4.5: 47.3 (#61), Gemma 3 27B: 22.5 (#334)

BenchmarkClaude Sonnet 4.5Gemma 3 27B
SciCode44.7%21.2%
LMArena Coding14891322
SWE-bench Verified71.3%—
SWE-bench Verified (bash only)71.4%—
Aider Polyglot—4.9%
LMArena WebDev1393—
SWE-bench Multilingual67%—
GSO14.7%—
WeirdML47.7%—
LiveBench Coding—39.9%
ALE-Bench796.15—
AlgoTune1.52—

Agentic & Tool Use Claude Sonnet 4.5 leads

Claude Sonnet 4.5: 38.3 (#32), Gemma 3 27B: 25.1 (#110)

BenchmarkClaude Sonnet 4.5Gemma 3 27B
Berkeley Function Calling Leaderboard73.2%29.5%
Terminal-Bench46.5%—
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 3 27B: 16.7 (#301)

BenchmarkClaude Sonnet 4.5Gemma 3 27B
Kagi LLM Benchmark57.9%40.4%
CritPt1.1%0%
Chess Puzzles12%0%
LMArena Hard Prompts14621340
DTBench83.2%52.5%
LMCA38.8%12.3%
Epoch Capabilities Index146.84130.04
ARC-AGI-213.6%—
SimpleBench54.3%—
NYT Connections (extended)37.3%—
ARC-AGI-163.7%—
EnigmaEval6%—
EBR-Bench2.4%—
LiveBench Reasoning—43.8%
Mystery Game Puzzles17%—
LiveBench Data Analysis—51.5%
ForecastBench61.9—
LiveBench—50%

Math Claude Sonnet 4.5 leads

Claude Sonnet 4.5: 32.3 (#216), Gemma 3 27B: 25.9 (#265)

BenchmarkClaude Sonnet 4.5Gemma 3 27B
OTIS Mock AIME 2024-202577.8%22.5%
LMArena Math14491312
MATH Level 597.7%74%
FrontierMath (Tiers 1-3)23.9%—
FrontierMath Tier 42.4%—
ProofBench19%—
Omni-MATH55.3%—
LiveBench Math—55.4%
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 3 27B: 25.5 (#261)

BenchmarkClaude Sonnet 4.5Gemma 3 27B
GPQA Diamond82.3%47.7%
Vectara Hallucination Rate12%7.4%
LMArena Expert14821304
Humanity's Last Exam13.7%—
SimpleQA Verified30.7%—
MMLU-Pro86.9%—
Confabulations—40.3%
GPQA (HELM)68.6%—

Multimodal Claude Sonnet 4.5 leads

Claude Sonnet 4.5: 34.8 (#89), Gemma 3 27B: 32.6 (#100)

BenchmarkClaude Sonnet 4.5Gemma 3 27B
LMArena Vision—1164
GeoBench—52%
VPCT39.8%—
LMArena Document1450—

Multilingual Claude Sonnet 4.5 leads

Claude Sonnet 4.5: 53.4 (#69), Gemma 3 27B: 46.9 (#155)

BenchmarkClaude Sonnet 4.5Gemma 3 27B
LMArena Non-English14251334
LMArena Chinese14591346
LMArena French14581368
LMArena German14271362
LMArena Japanese13901287
LMArena Korean14031308
LMArena Russian14371349
LMArena Spanish14571349

Instruction Following Claude Sonnet 4.5 leads

Claude Sonnet 4.5: 75.0 (#78), Gemma 3 27B: 70.6 (#160)

BenchmarkClaude Sonnet 4.5Gemma 3 27B
LMArena Instruction Following14591321
LiveBench Instruction Following—74.9%
IFEval85%—

Long Context Claude Sonnet 4.5 leads

Claude Sonnet 4.5: 45.2 (#46), Gemma 3 27B: 27.6 (#293)

BenchmarkClaude Sonnet 4.5Gemma 3 27B
LMArena Longer Query14761333
Fiction.LiveBench—33.3%

Writing & Preference Claude Sonnet 4.5 leads

Claude Sonnet 4.5: 66.5 (#34), Gemma 3 27B: 52.5 (#168)

BenchmarkClaude Sonnet 4.5Gemma 3 27B
LMArena Text14391358
LMArena Creative Writing14421346
EQ-Bench Creative Writing16781266
LMArena Multi-Turn14651345
Short-Story Creative Writing—79.9%
WildBench85.4%—
LiveBench Language—34.6%

Frequently asked questions

Is Claude Sonnet 4.5 better than Gemma 3 27B?

Claude Sonnet 4.5 is the stronger model overall, scoring 44.1 to 30.8 on the Noometry Index. Gemma 3 27B costs 60× less per token, which makes it the better buy when Claude Sonnet 4.5's lead doesn't matter for your workload.

Which is cheaper, Claude Sonnet 4.5 or Gemma 3 27B?

Gemma 3 27B is cheaper. It lists at $0.08 per million input tokens and $0.16 per million output tokens; Claude Sonnet 4.5 lists at $3 and $15.

Is Claude Sonnet 4.5 or Gemma 3 27B better for coding?

Claude Sonnet 4.5 scores higher on coding benchmarks: 47.3 versus 22.5 in the Noometry coding category.

Which has the bigger context window?

Claude Sonnet 4.5 does, with 200K tokens against 131K.

How many benchmarks do Claude Sonnet 4.5 and Gemma 3 27B share?

30 benchmarks have published results for both models. Claude Sonnet 4.5 has 73 scored results on Noometry and Gemma 3 27B has 43.

Related comparisons

Go deeper