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Claude Sonnet 5.5 (max) vs Gemini 3.8 Flash (medium)

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 $7.545. Gemini 3.8 Flash (medium) is faster at 14.50s vs 83.04s, with pass rates of 81.8% vs 92.4%.

Last updated at: 2026-09-29

Compared models

Rank
#39
Total Output Tokens
727,349
Response Time (avg)
83.04s
Total Cost
$7.545
Rank
#31
Total Output Tokens
154,908
Response Time (avg)
14.50s
Total Cost
$0.653
Recommended model Gemini 3.8 Flash (medium)

It has the best score here (9.1), while costing about 11.6x less than Claude Sonnet 5.5 (max).

Detailed comparison

Metric Claude Sonnet 5.5 Claude Sonnet 5.5 max Release: 2026-09-29 Gemini 3.8 Flash Gemini 3.8 Flash medium Release: 2026-09-02
Score 9.0 9.1
Rank #39 #31
Reliability 10.0 10.0
Consistency 9.4 9.3
Attempts 66/66 66/66
Tests Correct
Attempt pass rate 81.8% 92.4%
Flaky tests 2 2
Total Runs 66 66
Cost per result 44.380 3.436
Total Cost $7.545 $0.653
Input Price $2.000 / 1M $0.750 / 1M
Output Price $10.000 / 1M $3.750 / 1M
Total Input Tokens 135,496 95,793
Output Tokens 8,153 7,066
Reasoning Tokens 719,196 147,842
Response Time (avg) 83.04s 14.50s
Response Time (max) 488.39s 108.60s
Response Time (total) 1826.84s 318.92s
Parameters ~1T total (~100B 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.

#39 Claude Sonnet 5.5

max
OpenRouter returned no showcase content (finish_reason: length).
Cost
$0.000
Time
571.7s
Tokens
0 tok

#31 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 Sonnet 5.5 10.0 10.0 100.0% 0 55.26s 10,608 580 70,730
Gemini 3.8 Flash 8.0 9.9 66.7% 0 11.69s 8,118 454 19,433

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