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#249

Seed 2.1 Turbo

Bytedance Seed Release: 2026-08-12 Tested on: 2026-08-14 04:05 bytedance-seed/seed-2-1-turbo::none
~200B total (~20B active)MoEClosedEstimated
(high) (medium) (low) (none)

Summary

Seed 2.1 Turbo scores 5.9 on AI BENCHY and ranks #249. It has 10.0 reliability, a 54.6% pass rate, $0.092 total cost, and 6.84s average response time.

What makes Seed 2.1 Turbo unique: It stands out most in Domain specific, where it ranks #1, while Data parsing and extraction is its weakest area at #13.

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

5.9

Consistency

8.9

Reliability

10.0

Total Cost (Current Price)

$0.092

Total Output Tokens

10,643

Total Input Tokens

129,150

Input Price

$0.500 / 1M

Output Price

$2.500 / 1M

Tests Correct

Wrong Tests: 12

Attempt pass rate: 54.6%

Flaky tests

3

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

Response Time (avg)

6.84s

Response Time (max): 55.92s

Response Time (total): 150.46s

Wrong answer: 11 No answer: 1

Hamster playing table tennis

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

#249 Seed 2.1 Turbo

none
Cost
$0.093
Time
517.1s
Tokens
37,102 tok

Run history

Tested on Score Reliability Tests Correct Total Cost Compare
2026-08-14 04:05 Re-test 5.9 10.0 $0.092 Current run
2026-08-12 22:25 Initial run 5.7 10.0 $0.092 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)
2026-08-14 04:05 · Current run66/66 attempts5.98.910.010/22310,643129,150$0.0926.84s
2026-08-12 22:25 · Initial run66/66 attempts5.78.910.09/22310,640129,141$0.0926.85s
Difference—+0.10.00.0+10+3+9+$0.001-9ms

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

Price History

Historical pricing data for this model from OpenRouter.

Date Input Price Output Price
2026-08-14 12:51 $0.500 / 1M $2.500 / 1M

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
Anti-AI Tricks 4.8 10.0
Coding 4.5 7.9
Combined 3.8 5.8
Data parsing and extraction 7.1 5.6
Domain specific 7.7 10.0
General Intelligence 5.0 10.0
Instructions following 9.8 10.0
Puzzle Solving 10.0 10.0
Tool Calling 10.0 10.0
Trivia 3.0 10.0

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