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Seed 2.1 Turbo (low) vs GPT-5.5 (medium)

Seed 2.1 Turbo (low) leads on average score with 9.3 vs 9.2. Seed 2.1 Turbo (low) has the lower benchmark cost at $1.645 vs $4.809. GPT-5.5 (medium) is faster at 39.86s vs 161.25s, with pass rates of 81.2% vs 88.4%.

Last updated at: 2026-11-10

Compared models

Rank
#35
Total Output Tokens
609,333
Response Time (avg)
161.25s
Total Cost
$1.645
Rank
#40
Total Output Tokens
130,107
Response Time (avg)
39.86s
Total Cost
$4.809
Recommended model Seed 2.1 Turbo (low)

It has the best score here (9.3), while costing about 2.9x less than GPT-5.5 (medium).

Detailed comparison

Metric Seed 2.1 Turbo Seed 2.1 Turbo low Release: 2026-08-12 GPT-5.5 GPT-5.5 medium Release: 2026-04-24
Score 9.3 9.2
Rank #35 #40
Reliability 10.0 10.0
Consistency 9.3 9.0
Attempts 69/69 69/69
Tests Correct
Attempt pass rate 81.2% 88.4%
Flaky tests 2 3
Total Runs 69 69
Cost per result 9.135 25.306
Total Cost $1.645 $4.809
Input Price $0.500 / 1M $5.000 / 1M
Output Price $2.500 / 1M $30.000 / 1M
Cache Read Price N/A $0.500 / 1M
Cache Write Price N/A N/A
Total Input Tokens 241,855 180,959
Output Tokens 8,387 6,472
Reasoning Tokens 600,946 123,635
Response Time (avg) 161.25s 39.86s
Response Time (max) 739.98s 332.10s
Response Time (total) 3708.70s 916.82s
Parameters ~200B total (~20B active) ~1.5T total (~100B 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.

#35 Seed 2.1 Turbo

low
Cost
$0.049
Time
298.8s
Tokens
19,730 tok

#40 GPT-5.5

medium
Cost
$0.112
Time
71.9s
Tokens
3,807 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
Seed 2.1 Turbo 10.0 10.0 100.0% 0 360.85s 8,220 385 207,368
GPT-5.5 8.8 7.8 88.9% 1 59.77s 7,305 362 24,959

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