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

Gemini 3.8 Flash (high) leads on average score with 9.9 vs 9.6. Gemini 3.8 Flash (high) has the lower benchmark cost at $1.927 vs $2.160. GPT-6 Astra (low) is faster at 7.01s vs 40.60s, with pass rates of 98.6% vs 91.3%.

Last updated at: 2026-10-19

Compared models

Rank
#2
Total Output Tokens
446,728
Response Time (avg)
40.60s
Total Cost
$1.927
Rank
#14
Total Output Tokens
11,389
Response Time (avg)
7.01s
Total Cost
$2.160
Recommended model GPT-6 Astra (low)

Its score stays close to the best score here (9.6 vs 9.9), while responding about 5.8x 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 low Release: 2026-09-04
Score 9.9 9.6
Rank #2 #14
Reliability 10.0 9.9
Consistency 9.6 10.0
Attempts 69/69 69/69
Tests Correct
Attempt pass rate 98.6% 91.3%
Flaky tests 1 0
Total Runs 69 69
Cost per result 8.756 10.285
Total Cost $1.927 $2.160
Input Price $0.750 / 1M $10.000 / 1M
Output Price $3.750 / 1M $50.000 / 1M
Cache Read Price $0.075 / 1M $1.000 / 1M
Cache Write Price $0.042 / 1M $12.500 / 1M
Total Input Tokens 334,568 159,023
Output Tokens 11,394 4,935
Reasoning Tokens 435,334 6,454
Response Time (avg) 40.60s 7.01s
Response Time (max) 177.08s 49.16s
Response Time (total) 933.73s 161.20s
Parameters ~500B total (~20B active) ~2T total (~150B active)
Availability Closed Closed

Cache prices apply to input tokens. Reads reuse cached prompts; writes store them and can cost extra. Output tokens use the output price.

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

low
Invalid SVG
Cost
$0.151
Time
48.9s
Tokens
3,094 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 3.97s 7,302 388 976

Quick Compare

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