Navigate
AI BENCHY
AD
Track all your projects in one dashboard. Get 📊stats, 🔥heatmaps and 👀recordings in one self-hosted dashboard.
uxwizz.com

AI BENCHY Compare

Google: Gemini 3.5 Flash vs Grok 4.1 Fast

Summary

Gemini 3.5 Flash vs Grok 4.1 Fast benchmark comparison: Gemini 3.5 Flash leads on average score with 9.8 vs 4.0. Grok 4.1 Fast has the lower benchmark cost at $0.008 vs $1.115. Grok 4.1 Fast is faster at 1.62s vs 8.84s, with pass rates of 96.8% vs 20.6%.

Recommended model: Gemini 3.5 Flash - It has the strongest score in this comparison (9.8) and the best overall balance of cost and response time across all 2 models.

Last updated at: 2026-07-02

Metric Gemini 3.5 Flash Gemini 3.5 Flash high Release: 2026-05-19 Grok 4.1 Fast Grok 4.1 Fast none Release: 2025-11-19
Score 9.8 4.0
Rank #1 #166
Reliability 10.0 10.0
Consistency 9.6 7.9
Tests Correct
Attempt pass rate 96.8% 20.6%
Flaky tests 1 3
Total Runs 63 57
Cost per result 5.575 0.273
Total Cost $1.115 $0.008
Input Price $1.500 / 1M $0.202 / 1M
Output Price $9.000 / 1M $0.202 / 1M
Total Input Tokens 37,594 36,608
Output Tokens 1,975 1,723
Reasoning Tokens 115,638 0
Response Time (avg) 8.84s 1.62s
Response Time (max) 34.82s 5.51s
Response Time (total) 185.57s 19.48s

Generation showcase

Hamster playing table tennis

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

#1 Gemini 3.5 Flash

high
Cost
$0.208
Time
118.2s
Tokens
23,158 tok

#166 Grok 4.1 Fast

none
Grok 4.1 Fast is deprecated. xAI recommends switching to Grok 4.3 (https://openrouter.ai/x-ai/grok-4.3)
Cost
$0.000
Time
0.1s
Tokens
0 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 3.5 Flash 10.0 10.0 100.0% 0 2.57s 492 174 4,997
Grok 4.1 Fast 3.2 10.0 0.0% 0 1.07s 2,502 235 0
Coding Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Gemini 3.5 Flash 10.0 10.0 100.0% 0 22.96s 8,118 456 47,129
Grok 4.1 Fast 1.8 1.1 11.1% 1 1.79s 1,203 567 0
Combined Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Gemini 3.5 Flash 10.0 10.0 100.0% 0 22.37s 12,873 351 16,323
Grok 4.1 Fast 3.0 10.0 0.0% 0 3.33s 8,997 105 0
Data parsing and extraction Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Gemini 3.5 Flash 10.0 10.0 100.0% 0 6.43s 7,548 279 8,466
Grok 4.1 Fast 10.0 10.0 100.0% 0 943ms 8,073 180 0
Domain specific Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Gemini 3.5 Flash 7.6 7.2 77.8% 1 14.09s 633 12 24,721
Grok 4.1 Fast 5.9 7.2 55.6% 1 1.06s 2,133 15 0
General Intelligence Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Gemini 3.5 Flash 10.0 10.0 100.0% 0 3.63s 486 115 1,650
Grok 4.1 Fast 4.4 9.9 0.0% 0 1.08s 948 112 0
Instructions following Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Gemini 3.5 Flash 10.0 10.0 100.0% 0 3.35s 615 70 3,799
Grok 4.1 Fast 3.0 10.0 0.0% 0 685ms 1,608 60 0
Puzzle Solving Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Gemini 3.5 Flash 10.0 10.0 100.0% 0 3.23s 558 241 4,940
Grok 4.1 Fast 3.0 10.0 0.0% 0 1.10s 2,058 229 0
Tool Calling Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Gemini 3.5 Flash 9.8 10.0 100.0% 0 4.96s 6,115 265 1,608
Grok 4.1 Fast 2.8 1.6 33.3% 1 5.51s 8,432 208 0
Trivia Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Gemini 3.5 Flash 10.0 10.0 100.0% 0 3.94s 156 12 2,005
Grok 4.1 Fast 3.0 10.0 0.0% 0 731ms 654 12 0

Quick Compare

Switch Comparison Pair