ByteDance: Doubao Seed Character
Doubao Seed Character is a reasoning model from ByteDance released on Jul 18, 2026. It reads text and images and writes text, with a 128K token context window and up to 33K tokens per reply.
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It costs $0.1179 per million input tokens and $0.2947 per million output tokens. Cached input bills at $0.0236, 80% less than fresh input.
It supports prompt caching.
- Modalities
- In / out price
- $0.1179 / $0.2947 per 1M
- Context
- 128K
- Max output
- 33K
- Released
- Jul 18, 2026
- Knowledge cutoff
- n/a
- Tool calling
- Structured output
- Reasoning
- Prompt caching
- Open weights
- Free to use
Doubao Seed Character 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 | $0.1179 / 1M tokens | |
|---|---|---|
| Output | $0.2947 / 1M tokens | |
| Cached input (read) | $0.0236 / 1M tokens | 80% off input |
| Cache write | $0.0025 / 1M tokens |
What Doubao Seed Character costs per month
Pick a workload close to yours or type your own volumes.
Supported request parameters
What you can set when you call Doubao Seed Character through an OpenAI compatible API.
- Reasoning
reasoning
Alternatives to Doubao Seed Character
Models that take the same inputs, closest in price, cheaper ones first.
- 256K context
Reads text, images, audio and video. Tool calling, structured output, reasoning. Served by 7 providers.
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by openaiJan 1, 2025$0.05/M input tokens$0.40/M output tokens30 providers
- 128K context
Reads text and images. Tool calling, structured output, reasoning. Served by 2 providers.
by z-aiDec 8, 2025$0.04/M input tokens$0.40/M output tokens2 providers
- 256K context
Reads text and images. Tool calling, structured output, reasoning. Served by 2 providers.
by bytedanceJul 26, 2025$0.07/M input tokens$0.30/M output tokens2 providers
- 1.05M context
Reads text, images, files, audio and video. Tool calling, structured output, reasoning. Served by 6 providers.
by metaSep 2, 2026$0.10/M input tokens$0.20/M output tokens6 providers
- 1.05M context
Reads text, images, files, audio and video. Tool calling, structured output, reasoning. Served by 6 providers.
by metaAug 5, 2026$0.10/M input tokens$0.20/M output tokens6 providers
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Doubao Seed Character questions
How much does the Doubao Seed Character API cost?
$0.1179 per million input tokens and $0.2947 per million output tokens, with cached input at $0.0236. The estimator on this page turns that into a monthly bill for your own workload.
What is the context window of Doubao Seed Character?
128,000 tokens of input, and it can write up to 32,768 tokens in one reply. As a rough guide, a million tokens is around 750,000 English words.
Does Doubao Seed Character 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 Character open source?
No. ByteDance serves it through an API only, so you cannot download the weights or host it yourself.
When was Doubao Seed Character released?
Jul 18, 2026.
Catalog data from models.dev (MIT licensed), refreshed daily, last on Oct 15, 2026. The summary is written from these facts.