Noometry

Model comparison

Gemini 3.5 Flash Lite vs Grok 4.3

Grok 4.3 is the stronger model overall, scoring 43.8 to 41.5 on the Noometry Index. Gemini 3.5 Flash Lite costs 1.8× less per token, which makes it the better buy when Grok 4.3's lead doesn't matter for your workload.

Last verified . 34 shared benchmarks.

Gemini 3.5 Flash Lite Google

41.5

Rank #133 Confirmed

Grok 4.3 xAI

43.8

Rank #86 Confirmed

Summary

  • They share 34 benchmarks with published results for both. Gemini 3.5 Flash Lite scores higher in 6 categories and Grok 4.3 in 4 categories; 9 gaps are clear of the uncertainty.
  • The widest gap is in math, where Grok 4.3 leads 46.0 to 25.9.
  • The biggest single-benchmark swing is OTIS Mock AIME 2024-2025: 71.1% for Gemini 3.5 Flash Lite and 93.3% for Grok 4.3.
  • Gemini 3.5 Flash Lite is cheaper at $0.30 / $2.50 per million input/output tokens, against $1.25 / $2.50 for Grok 4.3.
  • Gemini 3.5 Flash Lite accepts more context: 1.05M tokens versus 1M.

Side by side

Gemini 3.5 Flash LiteGrok 4.3
ProviderGooglexAI
Noometry Index41.543.8
Released2026-07-212026-04-17
WeightsProprietaryProprietary
Context window1.05M1M
Max output66K30K
Input $ / M tokens$0.30$1.25
Output $ / M tokens$2.50$2.50
Results tracked3940

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Category by category

Coding Too close to call

Gemini 3.5 Flash Lite: 42.4 (#104), Grok 4.3: 41.6 (#121)

BenchmarkGemini 3.5 Flash LiteGrok 4.3
LMArena WebDev14401357
SciCode41.3%47.3%
WeirdML39%49.9%
LMArena Coding14531415
ALE-Bench765.27944.17

Agentic & Tool Use Grok 4.3 leads

Gemini 3.5 Flash Lite: 25.7 (#107), Grok 4.3: 27.7 (#99)

BenchmarkGemini 3.5 Flash LiteGrok 4.3
GDP.pdf10%8%
APEX-Agents29.3%—
LMArena Search—1165
Vending-Bench 2—35.26

Reasoning Grok 4.3 leads

Gemini 3.5 Flash Lite: 27.8 (#114), Grok 4.3: 35.9 (#68)

BenchmarkGemini 3.5 Flash LiteGrok 4.3
NYT Connections (extended)60.4%55.2%
CritPt0%8%
Chess Puzzles22%25%
LMArena Hard Prompts14411396
DTBench83.5%90.7%
LMCA37.6%38.3%
Epoch Capabilities Index145.13149.16
ARC-AGI-210.3%—
ARC-AGI-153.5%—
Mystery Game Puzzles19%—
ForecastBench—60.3

Math Grok 4.3 leads

Gemini 3.5 Flash Lite: 25.9 (#264), Grok 4.3: 46.0 (#74)

BenchmarkGemini 3.5 Flash LiteGrok 4.3
FrontierMath (Tiers 1-3)26%42.8%
FrontierMath Tier 40%14.6%
OTIS Mock AIME 2024-202571.1%93.3%
ProofBench13%11%
LMArena Math14331388

Knowledge Grok 4.3 leads

Gemini 3.5 Flash Lite: 50.1 (#72), Grok 4.3: 52.5 (#62)

BenchmarkGemini 3.5 Flash LiteGrok 4.3
GPQA Diamond83.3%88.8%
LMArena Expert14351385
SimpleQA Verified—33.2%

Multimodal Gemini 3.5 Flash Lite leads

Gemini 3.5 Flash Lite: 41.1 (#40), Grok 4.3: 31.6 (#104)

BenchmarkGemini 3.5 Flash LiteGrok 4.3
LMArena Vision12681229
Blueprint-Bench 2—0%

Multilingual Gemini 3.5 Flash Lite leads

Gemini 3.5 Flash Lite: 53.5 (#63), Grok 4.3: 50.5 (#120)

BenchmarkGemini 3.5 Flash LiteGrok 4.3
LMArena Non-English14271385
LMArena Chinese14691422
LMArena French14511412
LMArena German14541395
LMArena Japanese14271379
LMArena Korean14071356
LMArena Russian14431399
LMArena Spanish14421398

Instruction Following Gemini 3.5 Flash Lite leads

Gemini 3.5 Flash Lite: 74.8 (#85), Grok 4.3: 72.1 (#140)

BenchmarkGemini 3.5 Flash LiteGrok 4.3
LMArena Instruction Following14201366

Long Context Gemini 3.5 Flash Lite leads

Gemini 3.5 Flash Lite: 43.9 (#84), Grok 4.3: 42.5 (#123)

BenchmarkGemini 3.5 Flash LiteGrok 4.3
LMArena Longer Query14351393

Writing & Preference Gemini 3.5 Flash Lite leads

Gemini 3.5 Flash Lite: 64.2 (#57), Grok 4.3: 58.5 (#118)

BenchmarkGemini 3.5 Flash LiteGrok 4.3
LMArena Text14351397
LMArena Creative Writing14201380
LMArena Multi-Turn14451406
EQ-Bench Creative Writing1559—
EQ-Bench 4—1075

Frequently asked questions

Is Gemini 3.5 Flash Lite better than Grok 4.3?

Grok 4.3 is the stronger model overall, scoring 43.8 to 41.5 on the Noometry Index. Gemini 3.5 Flash Lite costs 1.8× less per token, which makes it the better buy when Grok 4.3's lead doesn't matter for your workload.

Which is cheaper, Gemini 3.5 Flash Lite or Grok 4.3?

Gemini 3.5 Flash Lite is cheaper. It lists at $0.30 per million input tokens and $2.50 per million output tokens; Grok 4.3 lists at $1.25 and $2.50.

Is Gemini 3.5 Flash Lite or Grok 4.3 better for coding?

They score almost the same on coding (42.4 vs 41.6); test both on your own repository before choosing.

Which has the bigger context window?

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

How many benchmarks do Gemini 3.5 Flash Lite and Grok 4.3 share?

34 benchmarks have published results for both models. Gemini 3.5 Flash Lite has 39 scored results on Noometry and Grok 4.3 has 40.

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