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Claude Opus 5.5 (low) 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 $0.952. Gemini 3 Flash Preview (medium) is faster at 19.86s vs 23.72s, with pass rates of 87.9% vs 93.9%.

Last updated at: 2026-09-23

Compared models

Rank
#20
Total Output Tokens
21,004
Response Time (avg)
23.72s
Total Cost
$0.952
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 strongest score in this comparison (9.5) and the best overall balance of cost and response time across all 2 models.

Detailed comparison

Metric Claude Opus 5.5 Claude Opus 5.5 low Release: 2026-09-23 Gemini 3 Flash Preview Gemini 3 Flash Preview medium Release: 2025-12-17
Score 9.3 9.5
Rank #20 #11
Reliability 10.0 10.0
Consistency 9.3 9.7
Attempts 66/66 66/66
Tests Correct
Attempt pass rate 87.9% 93.9%
Flaky tests 2 1
Total Runs 66 66
Cost per result 5.284 3.814
Total Cost $0.952 $0.763
Input Price $4.000 / 1M $0.500 / 1M
Output Price $20.000 / 1M $3.000 / 1M
Total Input Tokens 132,746 87,870
Output Tokens 6,454 5,486
Reasoning Tokens 14,550 234,122
Response Time (avg) 23.72s 19.86s
Response Time (max) 89.16s 117.26s
Response Time (total) 521.82s 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.

#20 Claude Opus 5.5

low
Invalid SVG
Cost
$0.038
Time
19.1s
Tokens
2,010 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 12.23s 10,608 575 2,777
Gemini 3 Flash Preview 8.6 7.6 88.9% 1 84.40s 8,122 462 161,084

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