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Claude Opus 5 vs Gemini 2.5 Flash (medium)

Gemini 2.5 Flash (medium) leads on average score with 7.3 vs 7.1. Gemini 2.5 Flash (medium) has the lower benchmark cost at $0.680 vs $2.766. Claude Opus 5 is faster at 10.78s vs 20.51s, with pass rates of 55.1% vs 68.1%.

Last updated at: 2026-10-09

Compared models

Rank
#159
Total Output Tokens
31,386
Response Time (avg)
10.78s
Total Cost
$2.766
Rank
#145
Total Output Tokens
241,365
Response Time (avg)
20.51s
Total Cost
$0.680
Recommended model Gemini 2.5 Flash (medium)

It has the best score here (7.3), while costing about 4.1x less than Claude Opus 5.

Detailed comparison

Metric Claude Opus 5 Claude Opus 5 none Release: 2026-07-25 Gemini 2.5 Flash Gemini 2.5 Flash medium Release: 2025-06-17
Score 7.1 7.3
Rank #159 #145
Reliability 10.0 10.0
Consistency 9.6 9.6
Attempts 69/69 69/69
Tests Correct
Attempt pass rate 55.1% 68.1%
Flaky tests 1 1
Total Runs 69 69
Cost per result 23.044 4.288
Total Cost $2.766 $0.680
Input Price $5.000 / 1M $0.300 / 1M
Output Price $25.000 / 1M $2.500 / 1M
Cache Read Price $0.500 / 1M $0.030 / 1M
Cache Write Price $6.250 / 1M $0.084 / 1M
Total Input Tokens 396,120 132,507
Output Tokens 31,386 12,739
Reasoning Tokens 0 228,626
Response Time (avg) 10.78s 20.51s
Response Time (max) 79.61s 140.50s
Response Time (total) 247.96s 471.64s
Parameters ~5T total (~500B active) ~350B total (~20B 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.

#159 Claude Opus 5

none
Cost
$0.271
Time
149.3s
Tokens
10,962 tok

#145 Gemini 2.5 Flash

medium
No output was saved. The original provider response or failure reason is unavailable.
Cost
$0.000
Time
274.0s
Tokens
0 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 5.9 9.7 33.3% 0 5.54s 10,590 2,886 0
Gemini 2.5 Flash 7.8 10.0 66.7% 0 41.01s 6,669 543 32,303

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