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Claude Opus 5 (high) vs Gemini 3.8 Flash (medium)

Claude Opus 5 (high) leads on average score with 9.2 vs 9.1. Gemini 3.8 Flash (medium) has the lower benchmark cost at $0.653 vs $3.070. Gemini 3.8 Flash (medium) is faster at 14.50s vs 22.51s, with pass rates of 81.8% vs 92.4%.

Last updated at: 2026-09-02

Rank
#15
Total Output Tokens
95,583
Response Time (avg)
22.51s
Total Cost
$3.070
Rank
#17
Total Output Tokens
154,908
Response Time (avg)
14.50s
Total Cost
$0.653
Recommended model Gemini 3.8 Flash (medium)

Its score stays close to the best score here (9.1 vs 9.2), while costing about 4.7x less than Claude Opus 5 (high).

Detailed comparison

Metric Claude Opus 5 Claude Opus 5 high Release: 2026-07-25 Gemini 3.8 Flash Gemini 3.8 Flash medium Release: 2026-09-02
Score 9.2 9.1
Rank #15 #17
Reliability 10.0 10.0
Consistency 10.0 9.3
Attempts 66/66 66/66
Tests Correct
Attempt pass rate 81.8% 92.4%
Flaky tests 0 2
Total Runs 66 66
Cost per result 17.052 3.436
Total Cost $3.070 $0.653
Input Price $5.000 / 1M $0.750 / 1M
Output Price $25.000 / 1M $3.750 / 1M
Total Input Tokens 135,956 95,793
Output Tokens 64,624 7,066
Reasoning Tokens 30,959 147,842
Response Time (avg) 22.51s 14.50s
Response Time (max) 159.01s 108.60s
Response Time (total) 495.12s 318.92s
Parameters ~5T total (~500B active) ~500B total (~20B active)
Availability Closed Closed

Model generation showcase

Hamster playing table tennis

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

#15 Claude Opus 5

high
Cost
$0.265
Time
144.5s
Tokens
10,741 tok

#17 Gemini 3.8 Flash

medium
Cost
$0.037
Time
54.6s
Tokens
9,712 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
Claude Opus 5 10.0 10.0 100.0% 0 12.73s 10,590 7,547 1,721
Gemini 3.8 Flash 8.0 9.9 66.7% 0 11.69s 8,118 454 19,433

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