Noometry

Model comparison

Gemini 3 Deep Think vs Grok 4.5

Grok 4.5 has enough public results to be ranked (#25); Gemini 3 Deep Think does not yet, so treat this comparison as directional.

Last verified . 3 shared benchmarks.

Gemini 3 Deep Think Google

58.3

Unranked Sparse

Grok 4.5 xAI

55.0

Rank #25 Confirmed

Summary

  • They share 3 benchmarks with published results for both. Gemini 3 Deep Think scores higher in 1 category and Grok 4.5 in 0 categories; one gap is clear of the uncertainty.
  • The widest gap is in reasoning, where Gemini 3 Deep Think leads 70.2 to 56.1.
  • The biggest single-benchmark swing is ARC-AGI-2: 84.6% for Gemini 3 Deep Think and 52.6% for Grok 4.5.

Side by side

Gemini 3 Deep ThinkGrok 4.5
ProviderGooglexAI
Noometry Index58.355.0
Released2026-02-122026-07-08
WeightsProprietaryProprietary
Context window—500K
Max output—500K
Input $ / M tokens—$2
Output $ / M tokens—$6
Results tracked352

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Category by category

Coding Not comparable

Gemini 3 Deep Think: —, Grok 4.5: 52.2 (#35)

BenchmarkGemini 3 Deep ThinkGrok 4.5
DeepSWE—53.8%
FrontierCode—42.4%
LMArena WebDev—1553
SciCode—54.1%
WeirdML—46.4%
LMArena Coding—1474
ALE-Bench—1,309

Agentic & Tool Use Not comparable

Gemini 3 Deep Think: —, Grok 4.5: 44.4 (#17)

BenchmarkGemini 3 Deep ThinkGrok 4.5
APEX-Agents—56.2%
τ²-bench Banking—47.9%
PostTrainBench—23.4%
GBAEval—65.4%
GDP.pdf—14%
LMArena Search—1213
Vending-Bench 2—3,887

Reasoning Gemini 3 Deep Think leads

Gemini 3 Deep Think: 70.2 (#14), Grok 4.5: 56.1 (#25)

BenchmarkGemini 3 Deep ThinkGrok 4.5
ARC-AGI-284.6%52.6%
ARC-AGI-196%87.2%
CritPt25.7%15.4%
SimpleBench—70%
Kagi LLM Benchmark—83.5%
NYT Connections (extended)—79.9%
Chess Puzzles—36%
LMArena Hard Prompts—1462
DTBench—96.5%
LMCA—45.2%
Surface Evolver Bench—74.4%
Epoch Capabilities Index—153.92

Math Not comparable

Gemini 3 Deep Think: —, Grok 4.5: 60.9 (#35)

BenchmarkGemini 3 Deep ThinkGrok 4.5
FrontierMath (Tiers 1-3)—57.2%
FrontierMath Tier 4—24.4%
OTIS Mock AIME 2024-2025—97.8%
ProofBench—31%
LMArena Math—1459

Knowledge Not comparable

Gemini 3 Deep Think: —, Grok 4.5: 62.3 (#24)

BenchmarkGemini 3 Deep ThinkGrok 4.5
GPQA Diamond—93.4%
SimpleQA Verified—48.3%
LMArena Expert—1466

Multimodal Not comparable

Gemini 3 Deep Think: —, Grok 4.5: 37.6 (#72)

BenchmarkGemini 3 Deep ThinkGrok 4.5
LMArena Vision—1288
Blueprint-Bench 2—27.3%
Furniture Assembly—22.5%
LMArena Document—1452

Multilingual Not comparable

Gemini 3 Deep Think: —, Grok 4.5: 54.4 (#42)

BenchmarkGemini 3 Deep ThinkGrok 4.5
LMArena Non-English—1440
LMArena Chinese—1496
LMArena French—1456
LMArena German—1446
LMArena Japanese—1428
LMArena Korean—1404
LMArena Russian—1448
LMArena Spanish—1450

Instruction Following Not comparable

Gemini 3 Deep Think: —, Grok 4.5: 76.0 (#48)

BenchmarkGemini 3 Deep ThinkGrok 4.5
LMArena Instruction Following—1446

Long Context Not comparable

Gemini 3 Deep Think: —, Grok 4.5: 44.8 (#56)

BenchmarkGemini 3 Deep ThinkGrok 4.5
LMArena Longer Query—1463

Writing & Preference Not comparable

Gemini 3 Deep Think: —, Grok 4.5: 65.8 (#42)

BenchmarkGemini 3 Deep ThinkGrok 4.5
LMArena Text—1448
LMArena Creative Writing—1442
EQ-Bench Creative Writing—1579
LMArena Multi-Turn—1456

Frequently asked questions

Is Gemini 3 Deep Think better than Grok 4.5?

Grok 4.5 has enough public results to be ranked (#25); Gemini 3 Deep Think does not yet, so treat this comparison as directional.

How many benchmarks do Gemini 3 Deep Think and Grok 4.5 share?

3 benchmarks have published results for both models. Gemini 3 Deep Think has 3 scored results on Noometry and Grok 4.5 has 52.

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