Hy4 preview vs Seed 2.1 Turbo

Price, context window & benchmark comparison

T

Hy4 preview

Tencent
$0.83 / $2.50
Input / Output · per 1M tokens
VS
B

Seed 2.1 Turbo

ByteDance Seed
$0.50 / $2.50
Input / Output · per 1M tokens
Compare different models
T
B
Verdict: Seed 2.1 Turbo is 20% cheaper than Hy4 preview on a typical 3:1 input/output mix. Hy4 preview has the larger context window (1M vs 262K).
Hy4 previewSeed 2.1 Turbo
Input price / 1M$0.83$0.50
Output price / 1M$2.50$2.50
Blended price (3:1)$1.25$1.00
Cached input / 1M$0.042
Context window1M262K
Max output64K236K
Intelligence index
Coding index
Providers31
Best provider uptime (30m)100.0%100.0%
Vision inputNoYes
ReasoningYesYes
Tool callingYesYes
Released2026-08-282026-08-12
Retirement

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FAQ

Which is cheaper, Hy4 preview or Seed 2.1 Turbo?

Seed 2.1 Turbo is 20% cheaper than Hy4 preview on a typical 3:1 input/output mix.

Hy4 preview vs Seed 2.1 Turbo: which has a bigger context window?

Hy4 preview: 1,048,576 tokens. Seed 2.1 Turbo: 262,144 tokens.

How much would 1 million requests cost?

At 2,000 input + 500 output tokens per request: Hy4 preview ≈ $2,919, Seed 2.1 Turbo ≈ $2,250.

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