GPT-6.1 Terra Pro vs Seed 2.1 Turbo

Price, context window & benchmark comparison

OpenAI

GPT-6.1 Terra Pro

OpenAI
$1.00 / $5.00
Input / Output · per 1M tokens
VS
ByteDance Seed

Seed 2.1 Turbo

ByteDance Seed
$0.50 / $2.50
Input / Output · per 1M tokens
Compare different models
OpenAI
ByteDance Seed
Verdict: Seed 2.1 Turbo is 2.0× cheaper than GPT-6.1 Terra Pro on a typical 3:1 input/output mix. GPT-6.1 Terra Pro has the larger context window (1.1M vs 262K).
GPT-6.1 Terra ProSeed 2.1 Turbo
Input price / 1M$1.00$0.50
Output price / 1M$5.00$2.50
Blended price (3:1)$2.00$1.00
Cached input / 1M$0.05—
Context window1.1M262K
Max output128K236K
Intelligence index——
Coding index——
Providers61
Best provider uptime (30m)100.0%100.0%
Vision inputYesYes
ReasoningYesYes
Tool callingYesYes
Released2026-10-262026-08-12
Retirement——

Cost calculator

FAQ

Which is cheaper, GPT-6.1 Terra Pro or Seed 2.1 Turbo?

Seed 2.1 Turbo is 2.0× cheaper than GPT-6.1 Terra Pro on a typical 3:1 input/output mix.

GPT-6.1 Terra Pro vs Seed 2.1 Turbo: which has a bigger context window?

GPT-6.1 Terra Pro: 1,050,000 tokens. Seed 2.1 Turbo: 262,144 tokens.

How much would 1 million requests cost?

At 2,000 input + 500 output tokens per request: GPT-6.1 Terra Pro ≈ $4,500, Seed 2.1 Turbo ≈ $2,250.

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