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

Claude Opus 5 (high) leads on average score with 9.2 vs 9.1. Seed 2.1 Turbo (low) has the lower benchmark cost at $1.631 vs $2.835. Claude Opus 5 (high) is faster at 20.44s vs 168.41s, with pass rates of 84.9% vs 83.3%.

Last updated at: 2026-08-12

Rank
#10
Total Output Tokens
86,180
Response Time (avg)
20.44s
Total Cost
$2.835
Rank
#15
Total Output Tokens
631,257
Response Time (avg)
168.41s
Total Cost
$1.631
Recommended model Claude Opus 5 (high)

It has the best score here (9.2), while responding about 8.2x faster than Seed 2.1 Turbo (low).

Detailed comparison

Metric Claude Opus 5 Claude Opus 5 high Release: 2026-07-25 Seed 2.1 Turbo Seed 2.1 Turbo low Release: 2026-08-12
Score 9.2 9.1
Rank #10 #15
Reliability 10.0 9.9
Consistency 9.6 8.9
Attempts 66/66 66/66
Tests Correct
Attempt pass rate 84.9% 83.3%
Flaky tests 1 3
Total Runs 66 66
Cost per result 15.747 9.591
Total Cost $2.835 $1.631
Input Price $5.000 / 1M $0.500 / 1M
Output Price $25.000 / 1M $2.500 / 1M
Total Input Tokens 135,959 104,483
Output Tokens 67,066 6,848
Reasoning Tokens 19,114 624,409
Response Time (avg) 20.44s 168.41s
Response Time (max) 159.01s 739.98s
Response Time (total) 449.68s 3705.09s
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.

#10 Claude Opus 5

high
Cost
$0.265
Time
144.5s
Tokens
10,741 tok

#15 Seed 2.1 Turbo

low
Cost
$0.049
Time
298.8s
Tokens
19,730 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 10.0 10.0 100.0% 0 12.73s 10,590 7,547 1,721
Seed 2.1 Turbo 10.0 10.0 100.0% 0 360.85s 8,220 385 207,368

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