Noometry

Model comparison

Claude Opus 4.6 vs Gemini 3.5 Flash Lite

Claude Opus 4.6 is the stronger model overall, scoring 58.2 to 41.5 on the Noometry Index. Gemini 3.5 Flash Lite costs 12× less per token, which makes it the better buy when Claude Opus 4.6's lead doesn't matter for your workload.

Last verified . 36 shared benchmarks.

Claude Opus 4.6 Anthropic

58.2

Rank #20 Confirmed

Gemini 3.5 Flash Lite Google

41.5

Rank #133 Confirmed

Summary

  • They share 36 benchmarks with published results for both. Claude Opus 4.6 scores higher in 9 categories and Gemini 3.5 Flash Lite in 1 category; 10 gaps are clear of the uncertainty.
  • The widest gap is in math, where Claude Opus 4.6 leads 63.0 to 25.9.
  • The biggest single-benchmark swing is ARC-AGI-2: 69.2% for Claude Opus 4.6 and 10.3% for Gemini 3.5 Flash Lite.
  • Gemini 3.5 Flash Lite is cheaper at $0.30 / $2.50 per million input/output tokens, against $5 / $25 for Claude Opus 4.6.
  • Gemini 3.5 Flash Lite accepts more context: 1.05M tokens versus 1M.

Side by side

Claude Opus 4.6Gemini 3.5 Flash Lite
ProviderAnthropicGoogle
Noometry Index58.241.5
Released2026-02-042026-07-21
WeightsProprietaryProprietary
Context window1M1.05M
Max output128K66K
Input $ / M tokens$5$0.30
Output $ / M tokens$25$2.50
Results tracked6839

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Category by category

Coding Claude Opus 4.6 leads

Claude Opus 4.6: 57.2 (#20), Gemini 3.5 Flash Lite: 42.4 (#104)

BenchmarkClaude Opus 4.6Gemini 3.5 Flash Lite
LMArena WebDev15471440
WeirdML78%39%
LMArena Coding15361453
ALE-Bench996.5765.27
SWE-bench Verified78.7%—
FrontierCode26.6%—
SWE-bench Verified (bash only)75.6%—
SWE-bench Multilingual72%—
SciCode—41.3%
GSO41.2%—
AlgoTune1.47—

Agentic & Tool Use Claude Opus 4.6 leads

Claude Opus 4.6: 51.1 (#4), Gemini 3.5 Flash Lite: 25.7 (#107)

BenchmarkClaude Opus 4.6Gemini 3.5 Flash Lite
APEX-Agents46.3%29.3%
Terminal-Bench79.8%—
Remote Labor Index4.2%—
τ²-bench Banking27.3%—
Cybench93%—
DeepResearch Bench55.3%—
GBAEval44.1%—
GDP.pdf—10%
LMArena Search1253—
METR Time Horizons78.9%—
Vending-Bench 28,018—

Reasoning Claude Opus 4.6 leads

Claude Opus 4.6: 57.8 (#23), Gemini 3.5 Flash Lite: 27.8 (#114)

BenchmarkClaude Opus 4.6Gemini 3.5 Flash Lite
ARC-AGI-269.2%10.3%
NYT Connections (extended)92.1%60.4%
ARC-AGI-194%53.5%
Chess Puzzles17%22%
LMArena Hard Prompts15271441
Mystery Game Puzzles25%19%
DTBench91.2%83.5%
LMCA55.8%37.6%
Epoch Capabilities Index155.24145.13
SimpleBench67.6%—
Kagi LLM Benchmark83.6%—
CritPt—0%
EnigmaEval7.6%—
Thematic Generalization80.6%—
EBR-Bench12.7%—
ForecastBench60—

Math Claude Opus 4.6 leads

Claude Opus 4.6: 63.0 (#31), Gemini 3.5 Flash Lite: 25.9 (#264)

BenchmarkClaude Opus 4.6Gemini 3.5 Flash Lite
FrontierMath (Tiers 1-3)66%26%
FrontierMath Tier 426.8%0%
OTIS Mock AIME 2024-202594.4%71.1%
ProofBench50%13%
LMArena Math15191433
MathArena Final-Answer Competitions78.5%—
FrontierMath (Feb 2025 set)40.7%—
FrontierMath Tier 4 (v1)22.9%—

Knowledge Claude Opus 4.6 leads

Claude Opus 4.6: 61.9 (#26), Gemini 3.5 Flash Lite: 50.1 (#72)

BenchmarkClaude Opus 4.6Gemini 3.5 Flash Lite
GPQA Diamond90.5%83.3%
LMArena Expert15461435
Humanity's Last Exam34.4%—
SimpleQA Verified47%—
Vectara Hallucination Rate12.2%—

Multimodal Gemini 3.5 Flash Lite leads

Claude Opus 4.6: 37.3 (#74), Gemini 3.5 Flash Lite: 41.1 (#40)

BenchmarkClaude Opus 4.6Gemini 3.5 Flash Lite
LMArena Vision13161268
Furniture Assembly28.3%—
LMArena Document1507—

Multilingual Claude Opus 4.6 leads

Claude Opus 4.6: 57.9 (#6), Gemini 3.5 Flash Lite: 53.5 (#63)

BenchmarkClaude Opus 4.6Gemini 3.5 Flash Lite
LMArena Non-English14891427
LMArena Chinese15511469
LMArena French15131451
LMArena German15021454
LMArena Japanese14841427
LMArena Korean14641407
LMArena Russian14971443
LMArena Spanish15101442

Instruction Following Claude Opus 4.6 leads

Claude Opus 4.6: 79.5 (#4), Gemini 3.5 Flash Lite: 74.8 (#85)

BenchmarkClaude Opus 4.6Gemini 3.5 Flash Lite
LMArena Instruction Following15231420

Long Context Claude Opus 4.6 leads

Claude Opus 4.6: 48.1 (#13), Gemini 3.5 Flash Lite: 43.9 (#84)

BenchmarkClaude Opus 4.6Gemini 3.5 Flash Lite
LMArena Longer Query15201435
CL-bench20.7%—
CL-bench Life17%—

Writing & Preference Claude Opus 4.6 leads

Claude Opus 4.6: 73.5 (#10), Gemini 3.5 Flash Lite: 64.2 (#57)

BenchmarkClaude Opus 4.6Gemini 3.5 Flash Lite
LMArena Text15031435
LMArena Creative Writing15051420
EQ-Bench Creative Writing18091559
LMArena Multi-Turn15131445
EQ-Bench 41223—

Frequently asked questions

Is Claude Opus 4.6 better than Gemini 3.5 Flash Lite?

Claude Opus 4.6 is the stronger model overall, scoring 58.2 to 41.5 on the Noometry Index. Gemini 3.5 Flash Lite costs 12× less per token, which makes it the better buy when Claude Opus 4.6's lead doesn't matter for your workload.

Which is cheaper, Claude Opus 4.6 or Gemini 3.5 Flash Lite?

Gemini 3.5 Flash Lite is cheaper. It lists at $0.30 per million input tokens and $2.50 per million output tokens; Claude Opus 4.6 lists at $5 and $25.

Is Claude Opus 4.6 or Gemini 3.5 Flash Lite better for coding?

Claude Opus 4.6 scores higher on coding benchmarks: 57.2 versus 42.4 in the Noometry coding category.

Which has the bigger context window?

Gemini 3.5 Flash Lite does, with 1.05M tokens against 1M.

How many benchmarks do Claude Opus 4.6 and Gemini 3.5 Flash Lite share?

36 benchmarks have published results for both models. Claude Opus 4.6 has 68 scored results on Noometry and Gemini 3.5 Flash Lite has 39.

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