ByteDance: Doubao Seed 2.1 Turbo
Doubao Seed 2.1 Turbo is a language model from ByteDance released on Jun 23, 2026. It reads text and writes text, with a 256K token context window and up to 128K tokens per reply.
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It costs $0.50 per million input tokens and $2.50 per million output tokens. Cached input bills at $0.25, 50% less than fresh input.
It supports prompt caching.
- Modalities
- In / out price
- $0.50 / $2.50 per 1M
- Context
- 256K
- Max output
- 128K
- Released
- Jun 23, 2026
- Knowledge cutoff
- n/a
- Tool calling
- Structured output
- Reasoning
- Prompt caching
- Open weights
- Free to use
Doubao Seed 2.1 Turbo pricing
USD, as listed on Oct 15, 2026. Most bills are input heavy, so the cached input rate matters as much as the headline price.
| Input | $0.50 / 1M tokens | |
|---|---|---|
| Output | $2.50 / 1M tokens | |
| Cached input (read) | $0.25 / 1M tokens | 50% off input |
What Doubao Seed 2.1 Turbo costs per month
Pick a workload close to yours or type your own volumes.
Alternatives to Doubao Seed 2.1 Turbo
Models that take the same inputs, closest in price, cheaper ones first.
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- Index 22.2
Reads text, images, files, audio and video. Tool calling, structured output, reasoning. Served by 25 providers.
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Reads text, images, audio and video, writes text and images. Reasoning.
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Reads text, images, files, audio and video. Tool calling, structured output, reasoning. Served by 32 providers.
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- 262K context
Reads text and images. Tool calling, structured output. Served by 15 providers.
by mistralaiNov 1, 2024$0.50/M input tokens$1.50/M output tokens15 providers
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Doubao Seed 2.1 Turbo questions
How much does the Doubao Seed 2.1 Turbo API cost?
$0.50 per million input tokens and $2.50 per million output tokens, with cached input at $0.25. The estimator on this page turns that into a monthly bill for your own workload.
What is the context window of Doubao Seed 2.1 Turbo?
256,000 tokens of input, and it can write up to 128,000 tokens in one reply. As a rough guide, a million tokens is around 750,000 English words.
Does Doubao Seed 2.1 Turbo support tool calling?
Not through the standard tools parameter. For an agent that calls your APIs, pick a model from the alternatives below that does.
Is Doubao Seed 2.1 Turbo open source?
No. ByteDance serves it through an API only, so you cannot download the weights or host it yourself.
When was Doubao Seed 2.1 Turbo released?
Jun 23, 2026.
Catalog data from models.dev (MIT licensed), refreshed daily, last on Oct 15, 2026. The summary is written from these facts.