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Google: Gemini 3 Flash Preview vs xAI: Grok 4.3

Summary

Gemini 3 Flash Preview vs Grok 4.3 benchmark comparison: Grok 4.3 leads on average score with 7.7 vs 7.4. Gemini 3 Flash Preview has the lower benchmark cost at $0.111 vs $0.614. Gemini 3 Flash Preview is faster at 5.76s vs 47.51s, with pass rates of 79.4% vs 71.4%.

Recommended model: Gemini 3 Flash Preview - Its score stays close to the best score here (7.4 vs 7.7), while costing about 5.6x less than Grok 4.3.

Last updated at: 2026-06-12

Metric Gemini 3 Flash Preview Gemini 3 Flash Preview low Release: 2025-12-17 Grok 4.3 Grok 4.3 medium Release: 2026-05-01
Score 7.4 7.7
Rank #53 #40
Reliability 10.0 10.0
Consistency 9.2 8.5
Tests Correct
Attempt pass rate 79.4% 71.4%
Flaky tests 2 4
Total Runs 63 63
Cost per result 0.689 4.724
Total Cost $0.111 $0.614
Input Price $0.500 / 1M $1.250 / 1M
Output Price $3.000 / 1M $2.500 / 1M
Total Input Tokens 36,769 44,472
Output Tokens 2,076 1,981
Reasoning Tokens 28,518 221,382
Response Time (avg) 5.76s 47.51s
Response Time (max) 14.72s 216.69s
Response Time (total) 120.93s 997.68s

Generation showcase

Hamster playing table tennis

Prompt: Create a detailed SVG illustration of a hamster playing table tennis.

#53 Gemini 3 Flash Preview

low
Cost
$0.007
Time
12.1s
Tokens
2,289 tok

#40 xAI: Grok 4.3

medium
Cost
$0.009
Time
19.0s
Tokens
3,661 tok

Top Models by Score

Score vs Total Cost

Response Time (avg)

Score vs Response Time (avg)

Total Output Tokens

Score vs Total Output Tokens

Category Breakdown

Anti-AI Tricks Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Gemini 3 Flash Preview 10.0 10.0 100.0% 0 3.48s 500 281 3,082
Grok 4.3 10.0 10.0 100.0% 0 8.83s 2,010 88 8,207
Coding Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Gemini 3 Flash Preview 5.8 7.2 44.4% 1 6.00s 8,122 456 7,421
Grok 4.3 5.9 7.7 44.4% 1 41.23s 8,340 1,028 31,226
Combined Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Gemini 3 Flash Preview 3.0 10.0 0.0% 0 3.27s 12,860 326 0
Grok 4.3 10.0 10.0 100.0% 0 63.99s 12,909 234 15,301
Data parsing and extraction Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Gemini 3 Flash Preview 10.0 10.0 100.0% 0 9.40s 7,261 279 3,656
Grok 4.3 10.0 10.0 100.0% 0 18.97s 7,761 180 9,546
Domain specific Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Gemini 3 Flash Preview 5.3 7.2 44.4% 1 8.05s 645 12 6,410
Grok 4.3 5.3 7.2 44.4% 1 181.74s 1,764 14 111,300
General Intelligence Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Gemini 3 Flash Preview 10.0 10.0 100.0% 0 3.68s 492 120 981
Grok 4.3 5.4 2.5 66.7% 1 24.70s 825 70 5,020
Instructions following Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Gemini 3 Flash Preview 9.9 10.0 100.0% 0 7.02s 621 71 2,752
Grok 4.3 9.8 10.0 100.0% 0 18.58s 1,362 57 8,713
Puzzle Solving Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Gemini 3 Flash Preview 10.0 10.0 100.0% 0 5.77s 562 288 3,168
Grok 4.3 5.9 7.2 55.6% 1 22.52s 1,689 128 14,468
Tool Calling Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Gemini 3 Flash Preview 10.0 10.0 100.0% 0 4.99s 5,550 234 415
Grok 4.3 10.0 10.0 100.0% 0 17.66s 7,263 168 4,615
Trivia Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Gemini 3 Flash Preview 10.0 10.0 100.0% 0 2.75s 156 9 633
Grok 4.3 3.0 10.0 0.0% 0 44.47s 549 14 12,986

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