ByteDance: Doubao-Seed-2.0-Lite

Cost-efficient ByteDance Seed 2.0 model for production chat, analysis, and structured generation

doubao-seed-2.0-lite

AvailableByteDanceChat

Input / Output: $0.25 / $2.00
Context: 229K
Max output: 128K
Modalities: VisionChat
Capabilities: Tool usePrompt CacheReasoning

About Doubao-Seed-2.0-Lite

Doubao-Seed-2.0-Lite is the middle size of ByteDance's Seed 2.0 family, described by ByteDance as a general-purpose, production-grade model that balances output quality with response speed. ByteDance reports it surpasses the earlier Doubao 1.8 generation. It accepts text and images, and supports tools, reasoning and JSON output.

Where it works well

ByteDance says its overall capability exceeds the previous Doubao 1.8 generation, making it the straightforward upgrade for older Doubao deployments.
ByteDance lists page generation from images and GUI interaction among its skills, which suits screenshot-to-code and interface-reading work.
ByteDance reports MathVision 89.8 and VideoMME 89.0 on its Seed2.0 page, strong figures for a mid-size model.
Tool calling, reasoning and JSON-mode output are all available for agent and pipeline use.
Sits between Pro and Mini, so one prompt set can be tested across all three sizes.

When to choose another model

For the longest reasoning chains on research-grade problems, Seed 2.0 Pro is ByteDance's stronger option.
If throughput and cost per call matter more than quality, Seed 2.0 Mini is the smaller choice.
Input is text and images only; it does not take audio or video.

Getting started

Create API key
Create a key in Console, then use it with every model on the platform.
02
Send your first request
Copy the example for your language and run it against the endpoint.
Text to textResponses API
POST/v1/responses
API format:
curl https://api.tokenlab.sh/v1/responses \ -H "Content-Type: application/json" \ -H "Authorization: Bearer sk-xxx" \ -d '{ "model": "doubao-seed-2.0-lite", "input": "Hello!" }'

Pricing

The Verified price applies to Verified, which costs less on most models. The Official price is the model maker's published price and applies to the more reliable Official route. Auto bills the route that completes the request.

Input tokens <= 128K · Text to text

per 1M tokens

Official price: Input $0.25 / Output $2.00 / Cache read $0.05 / Cache write $0.25 / Text Input $0.25 / Text Input · Cache read $0.05 / Audio Input $3.75 / Audio Input · Cache read $0.75 / Image Input $0.25 / Image Input · Cache read $0.05 / Text Output $2.00
Verified price: —
Discount: —

Input tokens 128K-256K · Text to text

per 1M tokens

Official price: Input $0.50 / Output $4.00 / Cache read $0.10 / Cache write $0.50 / Text Input $0.50 / Text Input · Cache read $0.10 / Audio Input $7.50 / Audio Input · Cache read $1.50 / Image Input $0.50 / Image Input · Cache read $0.10 / Text Output $4.00
Verified price: —
Discount: —

Prompt cache pricing

Cache read

Official price: $0.05
Verified price: —
Discount: —

Cache write

Official price: $0.25
Verified price: —
Discount: —

	Official priceper 1M tokens	Verified priceper 1M tokens	Discount
Input tokens <= 128K · Text to text	Input $0.25 / Output $2.00 / Cache read $0.05 / Cache write $0.25 / Text Input $0.25 / Text Input · Cache read $0.05 / Audio Input $3.75 / Audio Input · Cache read $0.75 / Image Input $0.25 / Image Input · Cache read $0.05 / Text Output $2.00	—	—
Input tokens 128K-256K · Text to text	Input $0.50 / Output $4.00 / Cache read $0.10 / Cache write $0.50 / Text Input $0.50 / Text Input · Cache read $0.10 / Audio Input $7.50 / Audio Input · Cache read $1.50 / Image Input $0.50 / Image Input · Cache read $0.10 / Text Output $4.00	—	—
Prompt cache pricing
Cache read	$0.05	—	—
Cache write	$0.25	—	—

Usage & activity

Success rate is the share of requests that completed. Latency is how long a full response takes; P95 means 95% of requests finished within that time.

Usage & availability

Last 24 hours

Requests
Success rate
P95 latency
Total tokens

Model performance

Last updated Oct 17, 2026, 6:03 PM UTC

Metrics appear once privacy and data volume thresholds are met.

Data is based on aggregate user requests, excluding status checks.

Open in Console

Open Doubao-Seed-2.0-Lite in Console with a prompt ready to edit or send.

Help me try doubao-seed-2.0-lite with a short message at /v1/responses. Show the reply, latency, and cost.

Use cases

Best for

Reasoning
Vision

Image-to-web-page drafts
Send a screenshot or sketch and ask for the HTML and CSS that reproduces it, then refine by chat.
Production assistants
Run customer-facing or internal chat that needs steady quality at moderate latency, with tool calls to business systems.
Chart and diagram reading
Pass dashboard screenshots or scanned figures and ask for the numbers and trends they show.
Structured extraction
Turn invoices or forms in image form into JSON records using the response-schema option.

Prompt examples

Our pricing page is in the attached screenshot. Write semantic HTML and CSS that matches the layout, using a single stylesheet.

Read this chart image and list each series with its trend over the period, then flag any month that looks anomalous.

Extract vendor, date, line items and total from this receipt photo and return them as JSON.

This model has conditional pricing. Monthly token totals alone cannot produce a reliable estimate; use the detailed pricing for the request specification, cache, and applicable time window.

FAQ

What exactly is Doubao-Seed-2.0-Lite?

It is the mid-size general-purpose model of ByteDance's Seed 2.0 series, positioned between Pro and Mini. ByteDance describes it as production-grade and as surpassing the previous Doubao 1.8 generation.

When should I pick Lite over Pro?

Pick Lite when you want balanced quality and speed for everyday production traffic. Pro is aimed at long-chain reasoning and complex workflows, so move up to it only for tasks where Lite's answers fall short.

Does Doubao-Seed-2.0-Lite understand images?

Yes. It accepts images with text and can read screenshots, charts and documents, then answer questions about them or turn them into structured output such as JSON records.

Does it support tool calling and JSON output?

Yes to both. It can call tools in an agent loop and return output matching a JSON schema, and a reasoning mode is available for harder questions.

Is Seed 2.0 Lite the same as Seed 2.1 Lite?

No. They are separate model IDs from different generations, and ByteDance's own Seed 2.1 page lists Pro and Turbo. Evaluate each on your own prompts before swapping one for the other.

How much does Doubao-Seed-2.0-Lite cost?

On TokenLab, Doubao-Seed-2.0-Lite costs Input $0.25 / Output $2.00 per 1M tokens. The pricing table above shows the full breakdown. Rates depend on the billing unit, specification, and usage. Compare matching conditions in the model's detailed pricing; a single rate does not determine the total cost.

What are the context window and output limit of Doubao-Seed-2.0-Lite?

Doubao-Seed-2.0-Lite accepts up to 229,376 tokens of context and returns up to 131,072 tokens in one response.

Which endpoint should Doubao-Seed-2.0-Lite use?

Use https://api.tokenlab.sh/v1/responses for Doubao-Seed-2.0-Lite. The request example below shows the matching code shape.

Which operations does Doubao-Seed-2.0-Lite support?

Doubao-Seed-2.0-Lite supports Text to text. Select an operation above to see its endpoint and request example.