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Gemini 3.8 Flash (medium) vs Grok 4.5 (high)

Gemini 3.8 Flash (medium) leads on average score with 9.1 vs 9.0. Gemini 3.8 Flash (medium) has the lower benchmark cost at $0.653 vs $2.252. Gemini 3.8 Flash (medium) is faster at 14.50s vs 72.30s, with pass rates of 92.4% vs 86.4%.

Last updated at: 2026-09-02

Rank
#17
Total Output Tokens
154,908
Response Time (avg)
14.50s
Total Cost
$0.653
Rank
#26
Total Output Tokens
324,462
Response Time (avg)
72.30s
Total Cost
$2.252
Recommended model Gemini 3.8 Flash (medium)

It has the best score here (9.1), while costing about 3.4x less than Grok 4.5 (high).

Detailed comparison

Metric Gemini 3.8 Flash Gemini 3.8 Flash medium Release: 2026-09-02 Grok 4.5 Grok 4.5 high Release: 2026-07-08
Score 9.1 9.0
Rank #17 #26
Reliability 10.0 10.0
Consistency 9.3 8.9
Attempts 66/66 66/66
Tests Correct
Attempt pass rate 92.4% 86.4%
Flaky tests 2 3
Total Runs 66 66
Cost per result 3.436 12.565
Total Cost $0.653 $2.252
Input Price $0.750 / 1M $2.000 / 1M
Output Price $3.750 / 1M $6.000 / 1M
Total Input Tokens 95,793 152,175
Output Tokens 7,066 5,655
Reasoning Tokens 147,842 318,807
Response Time (avg) 14.50s 72.30s
Response Time (max) 108.60s 676.83s
Response Time (total) 318.92s 1590.56s
Parameters ~500B total (~20B active) ~1.7T total (~170B active)
Availability Closed Closed

Model generation showcase

Hamster playing table tennis

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

#17 Gemini 3.8 Flash

medium
Cost
$0.037
Time
54.6s
Tokens
9,712 tok

#26 SpaceXAI: Grok 4.5

high
Cost
$0.015
Time
29.7s
Tokens
2,737 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

Coding Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Gemini 3.8 Flash 8.0 9.9 66.7% 0 11.69s 8,118 454 19,433
Grok 4.5 10.0 10.0 100.0% 0 155.16s 9,579 357 100,752

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