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#83

Seed 2.1 Turbo

Bytedance Seed Release: 2026-08-12 Tested on: 2026-10-01 04:03 bytedance-seed/seed-2-1-turbo::medium
~200B total (~20B active)MoEClosedEstimated
(high) (medium) (low) (none)

Summary

Seed 2.1 Turbo scores 8.7 on AI BENCHY and ranks #83. It has 10.0 reliability, a 79.7% pass rate, $2.042 total cost, and 189.13s average response time.

What makes Seed 2.1 Turbo unique: It stands out most in Puzzle Solving, where it ranks #4, while Domain specific is its weakest area at #15. It uses unusually many reasoning tokens, which can help explain its slower or more expensive runs.

Model facts

Researched on 2026-08-12

Estimated
Parameters
~200B total (~20B active)
Architecture
MoE
Availability
Closed
License
-

Best estimate from public evidence; the vendor did not disclose every value. The exact API checkpoint is closed and its architecture and parameter counts are not disclosed; estimate follows the Seed2 production tier.

Parameter source Availability source

Score

8.7

Consistency

8.2

Reliability

10.0

Total Cost (Current Price)

$2.042

Total Output Tokens

769,582

Total Input Tokens

234,572

Input Price

$0.500 / 1M

Output Price

$2.500 / 1M

Cache Read Price

N/A

Cache Write Price

N/A

Cache prices apply to input tokens. Reads reuse cached prompts; writes store them and can cost extra. Output tokens use the output price.

Tests Correct

Wrong Tests: 7

Attempt pass rate: 79.7%

Flaky tests

5

Flaky tests had mixed outcomes across runs (at least one pass and one fail).

Response Time (avg)

189.13s

Response Time (max): 885.33s

Response Time (total): 4349.92s

Wrong answer: 5 Did not follow instructions: 1 No answer: 1

Hamster playing table tennis

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

#83 Seed 2.1 Turbo

medium
Cost
$0.099
Time
583.9s
Tokens
39,514 tok

Run history

Tested on Score Reliability Tests Correct Total Cost Compare
2026-10-01 04:03 Re-test 8.7 10.0 $2.042 Current run
2026-08-12 22:48 Initial run 8.4 9.9 $1.969 Compare

This run used a different benchmark suite. Keep suite changes in mind when reading historical movement.

Run comparison

RunBenchmark coverageScoreConsistencyReliabilityTests CorrectFlaky testsTotal Output TokensTotal Input TokensTotal CostResponse Time (avg)
2026-10-01 04:03 · Current run69/69 attempts8.78.210.016/235769,582234,572$2.042189.13s
2026-08-12 22:48 · Initial run66/66 attempts8.48.29.915/225766,465104,424$1.969197.04s
Difference—+0.30.0+0.1+10+3117+130148+$0.073-7909ms

Benchmark coverage differs: 69/69 attempts (Target: 3 repeats per test) versus 66/66 attempts (Target: 3 repeats per test). Totals and repeat-sensitive metrics are not directly comparable.

These two runs used different benchmark suites, so the deltas reflect both model changes and suite changes.

Charts

Choose the first model, then click a second model to open a side-by-side page.

Total Output Tokens

Score vs Total Output Tokens

Quick Compare

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Category Breakdown

Category Score Consistency Tests Correct
Agentic 10.0 10.0
Anti-AI Tricks 8.2 7.9
Coding 8.2 7.2
Combined 10.0 10.0
Data parsing and extraction 10.0 10.0
Domain specific 2.9 4.4
General Intelligence 6.1 3.1
Instructions following 9.8 10.0
Puzzle Solving 9.9 10.0
Tool Calling 10.0 10.0
Trivia 3.0 10.0

Compared models