Noometry

Model comparison

Claude Sonnet 5.5 vs Gemini 2.0 Pro

Claude Sonnet 5.5 is the stronger model overall, scoring 61.9 to 39.1 on the Noometry Index.

Last verified . 2 shared benchmarks.

Claude Sonnet 5.5 Anthropic

61.9

Rank #10 Confirmed

Gemini 2.0 Pro Google

39.1

Rank #173 Confirmed

Summary

  • They share 2 benchmarks with published results for both. Claude Sonnet 5.5 scores higher in 7 categories and Gemini 2.0 Pro in 0 categories; 7 gaps are clear of the uncertainty.
  • The widest gap is in math, where Claude Sonnet 5.5 leads 87.9 to 39.7.
  • The biggest single-benchmark swing is GPQA Diamond: 95.6% for Claude Sonnet 5.5 and 65.7% for Gemini 2.0 Pro.

Side by side

Claude Sonnet 5.5Gemini 2.0 Pro
ProviderAnthropicGoogle
Noometry Index61.939.1
Released2026-09-282025-02-05
WeightsProprietaryProprietary
Context window1M—
Max output128K—
Input $ / M tokens$2—
Output $ / M tokens$10—
Results tracked3214

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Category by category

Coding Claude Sonnet 5.5 leads

Claude Sonnet 5.5: 67.3 (#6), Gemini 2.0 Pro: 37.8 (#187)

BenchmarkClaude Sonnet 5.5Gemini 2.0 Pro
FrontierCode52.1%—
Aider Polyglot—35.6%
CursorBench55.5%—
LMArena WebDev1774—
FrontierSWE61.9%—
SciCode61%—
LiveBench Coding—63.5%
LMArena Coding1513—
ALE-Bench1,819—

Agentic & Tool Use Not comparable

Claude Sonnet 5.5: 45.0 (#16), Gemini 2.0 Pro: —

BenchmarkClaude Sonnet 5.5Gemini 2.0 Pro
APEX-Agents75.5%—

Reasoning Claude Sonnet 5.5 leads

Claude Sonnet 5.5: 54.0 (#28), Gemini 2.0 Pro: 22.3 (#198)

BenchmarkClaude Sonnet 5.5Gemini 2.0 Pro
Epoch Capabilities Index165.03135.06
NYT Connections (extended)80.5%—
CritPt31.4%—
EnigmaEval—0.7%
LiveBench Reasoning—60.1%
LMArena Hard Prompts1495—
Mystery Game Puzzles65%—
LiveBench Data Analysis—68%
LiveBench—65.1%

Math Claude Sonnet 5.5 leads

Claude Sonnet 5.5: 87.9 (#6), Gemini 2.0 Pro: 39.7 (#100)

BenchmarkClaude Sonnet 5.5Gemini 2.0 Pro
FrontierMath (Tiers 1-3)88.8%—
FrontierMath Tier 480.5%—
OTIS Mock AIME 2024-2025100%—
ProofBench100%—
LiveBench Math—71%
LMArena Math1510—
MATH Level 5—83.5%
FrontierMath Erdős2.9%—

Knowledge Claude Sonnet 5.5 leads

Claude Sonnet 5.5: 66.0 (#12), Gemini 2.0 Pro: 36.5 (#167)

BenchmarkClaude Sonnet 5.5Gemini 2.0 Pro
GPQA Diamond95.6%65.7%
SimpleQA Verified46.5%—
Confabulations—18.4%
LMArena Expert1540—

Multimodal Not comparable

Claude Sonnet 5.5: 51.5 (#6), Gemini 2.0 Pro: —

BenchmarkClaude Sonnet 5.5Gemini 2.0 Pro
LMArena Vision1289—
Furniture Assembly75%—

Multilingual Not comparable

Claude Sonnet 5.5: 55.3 (#30), Gemini 2.0 Pro: —

BenchmarkClaude Sonnet 5.5Gemini 2.0 Pro
LMArena Non-English1452—
LMArena Chinese1522—
LMArena Russian1451—

Instruction Following Claude Sonnet 5.5 leads

Claude Sonnet 5.5: 78.3 (#11), Gemini 2.0 Pro: 75.5 (#59)

BenchmarkClaude Sonnet 5.5Gemini 2.0 Pro
LiveBench Instruction Following—83.4%
LMArena Instruction Following1495—

Long Context Claude Sonnet 5.5 leads

Claude Sonnet 5.5: 45.9 (#28), Gemini 2.0 Pro: 29.2 (#292)

BenchmarkClaude Sonnet 5.5Gemini 2.0 Pro
Fiction.LiveBench—41.7%
LMArena Longer Query1498—

Writing & Preference Claude Sonnet 5.5 leads

Claude Sonnet 5.5: 66.0 (#40), Gemini 2.0 Pro: 52.7 (#165)

BenchmarkClaude Sonnet 5.5Gemini 2.0 Pro
LMArena Text1471—
LMArena Creative Writing1465—
LMArena Multi-Turn1474—
LiveBench Language—44.9%

Frequently asked questions

Is Claude Sonnet 5.5 better than Gemini 2.0 Pro?

Claude Sonnet 5.5 is the stronger model overall, scoring 61.9 to 39.1 on the Noometry Index.

Is Claude Sonnet 5.5 or Gemini 2.0 Pro better for coding?

Claude Sonnet 5.5 scores higher on coding benchmarks: 67.3 versus 37.8 in the Noometry coding category.

How many benchmarks do Claude Sonnet 5.5 and Gemini 2.0 Pro share?

2 benchmarks have published results for both models. Claude Sonnet 5.5 has 32 scored results on Noometry and Gemini 2.0 Pro has 14.

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