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Gemini 3.8 Flash (high) vs GPT-6 Astra (xhigh)

The average score is effectively tied at 9.9 vs 9.9. Gemini 3.8 Flash (high) has the lower benchmark cost at $1.595 vs $5.156. GPT-6 Astra (xhigh) is faster at 28.44s vs 37.19s, with pass rates of 98.5% vs 97.0%.

Last updated at: 2026-09-04

Rank
#2
Total Output Tokens
408,188
Response Time (avg)
37.19s
Total Cost
$1.595
Rank
#5
Total Output Tokens
87,183
Response Time (avg)
28.44s
Total Cost
$5.156
Recommended model Gemini 3.8 Flash (high)

It has the best score here (9.9), while costing about 3.2x less than GPT-6 Astra (xhigh).

Detailed comparison

Metric Gemini 3.8 Flash Gemini 3.8 Flash high Release: 2026-09-02 GPT-6 Astra GPT-6 Astra xhigh Release: 2026-09-04
Score 9.9 9.9
Rank #2 #5
Reliability 10.0 9.9
Consistency 9.6 9.6
Attempts 66/66 66/66
Tests Correct
Attempt pass rate 98.5% 97.0%
Flaky tests 1 1
Total Runs 66 66
Cost per result 7.592 24.552
Total Cost $1.595 $5.156
Input Price $0.750 / 1M $10.000 / 1M
Output Price $3.750 / 1M $50.000 / 1M
Total Input Tokens 84,593 79,662
Output Tokens 10,517 5,055
Reasoning Tokens 397,671 82,128
Response Time (avg) 37.19s 28.44s
Response Time (max) 177.08s 381.11s
Response Time (total) 818.19s 625.68s
Parameters ~500B total (~20B active) ~2T total (~150B active)
Availability Closed Closed

Model generation showcase

Hamster playing table tennis

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

#2 Gemini 3.8 Flash

high
Cost
$0.077
Time
129.1s
Tokens
20,373 tok

#5 GPT-6 Astra

xhigh
Cost
$0.694
Time
257.5s
Tokens
13,964 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 10.0 10.0 100.0% 0 29.30s 8,118 462 50,196
GPT-6 Astra 10.0 10.0 100.0% 0 8.27s 7,302 396 4,031

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