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

Gemini 3.8 Flash (high) leads on average score with 9.9 vs 9.4. Gemini 3.8 Flash (high) has the lower benchmark cost at $1.595 vs $1.774. GPT-6 Astra (medium) is faster at 8.08s vs 37.19s, with pass rates of 98.5% vs 90.9%.

Last updated at: 2026-09-04

Rank
#2
Total Output Tokens
408,188
Response Time (avg)
37.19s
Total Cost
$1.595
Rank
#14
Total Output Tokens
19,627
Response Time (avg)
8.08s
Total Cost
$1.774
Recommended model GPT-6 Astra (medium)

Its score stays close to the best score here (9.4 vs 9.9), while responding about 4.6x faster than Gemini 3.8 Flash (high).

Detailed comparison

Metric Gemini 3.8 Flash Gemini 3.8 Flash high Release: 2026-09-02 GPT-6 Astra GPT-6 Astra medium Release: 2026-09-04
Score 9.9 9.4
Rank #2 #14
Reliability 10.0 9.9
Consistency 9.6 9.2
Attempts 66/66 66/66
Tests Correct
Attempt pass rate 98.5% 90.9%
Flaky tests 1 2
Total Runs 66 66
Cost per result 7.592 9.337
Total Cost $1.595 $1.774
Input Price $0.750 / 1M $10.000 / 1M
Output Price $3.750 / 1M $50.000 / 1M
Total Input Tokens 84,593 79,264
Output Tokens 10,517 4,789
Reasoning Tokens 397,671 14,838
Response Time (avg) 37.19s 8.08s
Response Time (max) 177.08s 73.48s
Response Time (total) 818.19s 177.70s
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

#14 GPT-6 Astra

medium
Cost
$0.231
Time
81.0s
Tokens
4,708 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 4.95s 7,302 394 1,673

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