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Claude Opus 5 (low) vs Seed 2.1 Turbo (high)

Seed 2.1 Turbo (high) leads on average score with 8.9 vs 8.7. Claude Opus 5 (low) has the lower benchmark cost at $1.121 vs $1.797. Claude Opus 5 (low) is faster at 6.99s vs 173.96s, with pass rates of 83.3% vs 78.8%.

Last updated at: 2026-08-15

Rank
#27
Total Output Tokens
17,992
Response Time (avg)
6.99s
Total Cost
$1.121
Rank
#23
Total Output Tokens
697,731
Response Time (avg)
173.96s
Total Cost
$1.797
Recommended model Claude Opus 5 (low)

Its score stays close to the best score here (8.7 vs 8.9), while costing about 1.6x less than Seed 2.1 Turbo (high).

Detailed comparison

Metric Claude Opus 5 Claude Opus 5 low Release: 2026-07-25 Seed 2.1 Turbo Seed 2.1 Turbo high Release: 2026-08-12
Score 8.7 8.9
Rank #27 #23
Reliability 10.0 10.0
Consistency 9.6 8.9
Attempts 66/66 66/66
Tests Correct
Attempt pass rate 83.3% 78.8%
Flaky tests 1 3
Total Runs 66 66
Cost per result 6.223 11.230
Total Cost $1.121 $1.797
Input Price $5.000 / 1M $0.500 / 1M
Output Price $25.000 / 1M $2.500 / 1M
Total Input Tokens 134,770 104,695
Output Tokens 13,604 6,645
Reasoning Tokens 4,388 691,086
Response Time (avg) 6.99s 173.96s
Response Time (max) 30.67s 584.71s
Response Time (total) 153.80s 3827.19s
Parameters ~5T total (~500B active) ~200B 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.

#27 Claude Opus 5

low
Cost
$0.062
Time
30.2s
Tokens
2,615 tok

#23 Seed 2.1 Turbo

high
Cost
$0.058
Time
355.4s
Tokens
23,053 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 7.8 7.4 77.8% 1 6.70s 10,590 2,442 760
Seed 2.1 Turbo 10.0 10.0 100.0% 0 336.02s 8,220 370 194,578

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