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Claude Opus 5.5 (high) vs Gemini 3 Flash Preview (medium)

Gemini 3 Flash Preview (medium) leads on average score with 9.5 vs 9.3. Gemini 3 Flash Preview (medium) has the lower benchmark cost at $0.763 vs $1.266. Gemini 3 Flash Preview (medium) is faster at 19.86s vs 25.88s, with pass rates of 86.4% vs 93.9%.

Last updated at: 2026-09-23

Compared models

Rank
#21
Total Output Tokens
36,457
Response Time (avg)
25.88s
Total Cost
$1.266
Rank
#11
Total Output Tokens
239,608
Response Time (avg)
19.86s
Total Cost
$0.763
Recommended model Gemini 3 Flash Preview (medium)

It has the best score here (9.5), while costing about 1.7x less than Claude Opus 5.5 (high).

Detailed comparison

Metric Claude Opus 5.5 Claude Opus 5.5 high Release: 2026-09-23 Gemini 3 Flash Preview Gemini 3 Flash Preview medium Release: 2025-12-17
Score 9.3 9.5
Rank #21 #11
Reliability 10.0 10.0
Consistency 9.3 9.7
Attempts 66/66 66/66
Tests Correct
Attempt pass rate 86.4% 93.9%
Flaky tests 2 1
Total Runs 66 66
Cost per result 7.029 3.814
Total Cost $1.266 $0.763
Input Price $4.000 / 1M $0.500 / 1M
Output Price $20.000 / 1M $3.000 / 1M
Total Input Tokens 134,020 87,870
Output Tokens 7,237 5,486
Reasoning Tokens 29,220 234,122
Response Time (avg) 25.88s 19.86s
Response Time (max) 95.95s 117.26s
Response Time (total) 569.33s 436.88s
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.

#21 Claude Opus 5.5

high
Cost
$0.136
Time
75.6s
Tokens
6,934 tok

#11 Gemini 3 Flash Preview

medium
Cost
$0.010
Time
18.4s
Tokens
3,351 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 5.5 10.0 10.0 100.0% 0 13.44s 10,608 584 5,042
Gemini 3 Flash Preview 8.6 7.6 88.9% 1 84.40s 8,122 462 161,084

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