ByteDancePaidOperational
Doubao Seed 2.1 Pro
API model name: doubao-seed-2-1-pro-260915
Doubao Seed 2.1 Pro is ByteDance's chat model, served on the Api.Airforce unified API. It has a 1M-token context window. Beyond text, it accepts image, file as input. Capabilities include Vision, Tool calling, Reasoning, Documents, Prompt caching. It is priced at $1.04 per million input tokens and $5.20 per million output tokens. Knowledge cutoff: 2026-06. Access it through the OpenAI-compatible API with one key, alongside 100+ other models on Api.Airforce.
Pricing
Specifications
- Provider
- ByteDance
- Type
- chat model
- Context window
- 1M tokens
- Max output
- 128K tokens
- Knowledge cutoff
- 2026-06
- Input
- text, image, file
- Output
- text
- Prompt caching
- Supported
Capabilities
VisionTool callingReasoningDocumentsPrompt cachingStreaming
What is Doubao Seed 2.1 Pro used for?
- Chatbots & assistants — conversational AI, drafting, summarizing and Q&A.
- Image understanding — analyze photos, screenshots, charts and scanned documents.
- Agents & automation — function calling and tool use for multi-step workflows.
- Complex reasoning — math, coding and step-by-step problem solving.
- Document analysis — summarize and answer questions across long files.
- Long-context tasks — process entire documents or codebases in a single prompt.
- Real-time experiences — stream tokens for responsive chat and apps.
Doubao Seed 2.1 Pro vs. similar models
| Model | Intelligence | Context | Input / 1M | Output / 1M |
|---|---|---|---|---|
| Doubao Seed 2.1 Pro | — | 1M | $1.04 | $5.20 |
| Doubao 1.5 Pro 32K | — | — | $0.12 | $0.29 |
| Doubao 1.5 Vision Pro 32K | — | — | $0.12 | $0.29 |
| Doubao Vision Lite 32K | — | — | $0.19 | $0.55 |
Prices are Api.Airforce pay-as-you-go rates per 1M tokens. Context is the maximum input length.
Related models
Doubao 1.5 Pro 32KByteDance · $0.12 / 1MDoubao 1.5 Vision Pro 32KByteDance · $0.12 / 1MDoubao Vision Lite 32KByteDance · $0.19 / 1MDoubao Vision Pro 32KByteDance · $0.38 / 1MDoubao 1.5 Thinking ProByteDance · $0.40 / 1MDoubao 1.5 Thinking Vision ProByteDance · $0.45 / 1MDoubao 1.5 Ui TarsByteDance · $0.55 / 1MDoubao 1.5 Vision LiteByteDance · $0.22 / 1MDoubao Embedding Large TextByteDance · $0.11 / 1MDoubao Seed 1.6ByteDance · $0.10 / 1MDoubao Seed 1.6 ThinkingByteDance · $0.33 / 1MDoubao Seed 1.6 ThinkingByteDance · $0.11 / 1M
Doubao Seed 2.1 Pro — frequently asked questions
- How much does Doubao Seed 2.1 Pro cost?
- Doubao Seed 2.1 Pro is billed pay-as-you-go at $1.04 per 1M input tokens and $5.20 per 1M output tokens. There is no subscription — you only pay for what you use.
- What is the context window of Doubao Seed 2.1 Pro?
- Doubao Seed 2.1 Pro supports a context window of up to 1M tokens. It can return up to 128K tokens in a single response.
- What can Doubao Seed 2.1 Pro do?
- Doubao Seed 2.1 Pro supports Vision, Tool calling, Reasoning, Documents, Prompt caching.
- Is Doubao Seed 2.1 Pro free to use?
- Doubao Seed 2.1 Pro is a paid, pay-as-you-go model — no subscription, you are only charged for usage.
- How do I use Doubao Seed 2.1 Pro via the API?
- Doubao Seed 2.1 Pro is OpenAI-compatible. Point any OpenAI SDK at https://api.airforce/v1 and pass the model ID doubao-seed-2-1-pro-260915 with your Api.Airforce API key.
- Who makes Doubao Seed 2.1 Pro?
- Doubao Seed 2.1 Pro is ByteDance's chat model, served through the unified Api.Airforce gateway alongside 100+ other models.
Loading live metrics…
Loading live metrics…
Loading live metrics…
Use Doubao Seed 2.1 Pro via the API
OpenAI-compatible — point any OpenAI SDK at https://api.airforce/v1 and pass doubao-seed-2-1-pro-260915 as the model.
cURL
curl https://api.airforce/v1/chat/completions \
-H "Authorization: Bearer $AIRFORCE_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "doubao-seed-2-1-pro-260915",
"messages": [{ "role": "user", "content": "Hello!" }]
}'Python
from openai import OpenAI
client = OpenAI(base_url="https://api.airforce/v1", api_key="$AIRFORCE_API_KEY")
r = client.chat.completions.create(
model="doubao-seed-2-1-pro-260915",
messages=[{"role": "user", "content": "Hello!"}],
)
print(r.choices[0].message.content)JavaScript
import OpenAI from "openai";
const client = new OpenAI({ baseURL: "https://api.airforce/v1", apiKey: process.env.AIRFORCE_API_KEY });
const r = await client.chat.completions.create({
model: "doubao-seed-2-1-pro-260915",
messages: [{ role: "user", content: "Hello!" }],
});
console.log(r.choices[0].message.content);