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Claude Opus 4.8 (medium) vs Seed 2.1 Turbo (high)

Seed 2.1 Turbo (high) leads on average score with 8.9 vs 8.8. Seed 2.1 Turbo (high) has the lower benchmark cost at $1.797 vs $1.983. Claude Opus 4.8 (medium) is faster at 12.97s vs 173.96s, with pass rates of 83.3% vs 78.8%.

Last updated at: 2026-09-24

Compared models

Rank
#45
Total Output Tokens
51,927
Response Time (avg)
12.97s
Total Cost
$1.983
Rank
#40
Total Output Tokens
697,731
Response Time (avg)
173.96s
Total Cost
$1.797
Recommended model Claude Opus 4.8 (medium)

Its score stays close to the best score here (8.8 vs 8.9), while responding about 13.4x faster than Seed 2.1 Turbo (high).

Detailed comparison

Metric Claude Opus 4.8 Claude Opus 4.8 medium Release: 2026-05-28 Seed 2.1 Turbo Seed 2.1 Turbo high Release: 2026-08-12
Score 8.8 8.9
Rank #45 #40
Reliability 10.0 10.0
Consistency 9.2 8.9
Attempts 66/66 66/66
Tests Correct
Attempt pass rate 83.3% 78.8%
Flaky tests 2 3
Total Runs 66 66
Cost per result 11.662 11.230
Total Cost $1.983 $1.797
Input Price $5.000 / 1M $0.500 / 1M
Output Price $25.000 / 1M $2.500 / 1M
Total Input Tokens 138,448 104,695
Output Tokens 40,765 6,645
Reasoning Tokens 11,162 691,086
Response Time (avg) 12.97s 173.96s
Response Time (max) 70.54s 584.71s
Response Time (total) 285.29s 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.

#45 Claude Opus 4.8

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

#40 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 4.8 10.0 10.0 100.0% 0 15.33s 10,590 9,945 1,381
Seed 2.1 Turbo 10.0 10.0 100.0% 0 336.02s 8,220 370 194,578

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