Navigate
AI BENCHY
Advertise here

Anthropic: Claude Opus 4.8 vs Claude Opus 5

Claude Opus 4.8 (medium) leads on average score with 8.8 vs 8.6. Claude Opus 5 (low) has the lower benchmark cost at $1.121 vs $1.931. Claude Opus 5 (low) is faster at 6.99s vs 12.49s, with pass rates of 84.9% vs 80.3%.

Recommended modelClaude Opus 5 (low)Its score stays close to the best score here (8.6 vs 8.8), while costing about 1.7x less than Claude Opus 4.8 (medium).

Last updated at: 2026-07-25

Metric Claude Opus 4.8 Claude Opus 4.8 medium Release: 2026-05-28 Claude Opus 5 Claude Opus 5 low Release: 2026-07-25
Score 8.8 8.6
Rank #19 #23
Reliability 10.0 10.0
Consistency 9.6 9.3
Tests Correct
Attempt pass rate 84.9% 80.3%
Flaky tests 1 2
Total Runs 66 66
Cost per result 10.724 6.593
Total Cost $1.931 $1.121
Input Price $5.000 / 1M $5.000 / 1M
Output Price $25.000 / 1M $25.000 / 1M
Total Input Tokens 138,451 134,773
Output Tokens 40,766 14,123
Reasoning Tokens 9,075 3,896
Response Time (avg) 12.49s 6.99s
Response Time (max) 70.54s 30.67s
Response Time (total) 274.72s 153.73s

Hamster playing table tennis

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

#19 Claude Opus 4.8

medium
Cost
$0.057
Time
23.1s
Tokens
2,412 tok

#23 Claude Opus 5

low
Cost
$0.062
Time
30.2s
Tokens
2,615 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 4.8 10.0 10.0 100.0% 0 15.33s 10,590 9,945 1,381
Claude Opus 5 7.8 7.4 77.8% 1 6.70s 10,590 2,442 760

Quick Compare

Switch Comparison Pair