ByteDance: Doubao-Seed-2.0-Pro
doubao-seed-2.0-pro- Input / Output
- $0.4706 / $2.35
- Context
- 229K
- Max output
- 128K
- Modalities
- VisionChat
- Capabilities
- Tool usePrompt CacheReasoning
About Doubao-Seed-2.0-Pro
Doubao-Seed-2.0-Pro is the flagship of ByteDance's Seed 2.0 family, released in February 2026 and focused on long-chain reasoning and robustness in complex real-world workflows. ByteDance cites competition-level math and programming results and uses it for CAD, algorithm repair and biotech research support. It accepts text and images, calls tools and offers a reasoning mode.
Where it works well
- ByteDance positions it for long-chain reasoning, where later steps depend on earlier ones, rather than single-turn answers.
- Reported BeyondAIME 86.5% on ByteDance's Seed2.0 page, a hard maths benchmark.
- ByteDance lists CAD design operations and algorithm repair among demonstrated tasks, which are unusual for a chat model.
- Tools, JSON output and prompt caching are supported for agent workloads.
When to choose another model
- It is the heaviest Seed 2.0 size, so latency-sensitive or very high-volume traffic is better on Lite or Mini.
- For pure code work, Seed 2.0 Code is the variant ByteDance built specifically for programming agents.
- Seed 2.1 Pro is the newer flagship, for teams that want the latest generation.
Getting started
Create API key
Create a key in Console, then use it with every model on the platform.
Send your first request
Copy the example for your language and run it against the endpoint.
Text to textResponses APIPOST/v1/responsesAPI format:curl https://api.tokenlab.sh/v1/responses \ -H "Content-Type: application/json" \ -H "Authorization: Bearer sk-xxx" \ -d '{ "model": "doubao-seed-2.0-pro", "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 <= 32K · Text to text · Input token range · [0,32k]
per 1M tokens- Official price
- Input $0.4706 / Output $2.35 / Cache read $0.0941 / Cache write $0.4706
- Verified price
- —
- Discount
- —
Input tokens <= 128K · Text to text · Input token range · (32k,128k]
per 1M tokens- Official price
- Input $0.7059 / Output $3.53 / Cache read $0.1412 / Cache write $0.7059
- Verified price
- —
- Discount
- —
Input tokens <= 256K · Text to text · Input token range · (128k,256k]
per 1M tokens- Official price
- Input $1.41 / Output $7.06 / Cache read $0.2824 / Cache write $1.41
- Verified price
- —
- Discount
- —
Cache read
- Official price
- $0.0941
- Verified price
- —
- Discount
- —
Cache write
- Official price
- $0.4706
- Verified price
- —
- Discount
- —
| Official priceper 1M tokens | Verified priceper 1M tokens | Discount | |
|---|---|---|---|
| Input tokens <= 32K · Text to text · Input token range · [0,32k] | Input $0.4706 / Output $2.35 / Cache read $0.0941 / Cache write $0.4706 | — | — |
| Input tokens <= 128K · Text to text · Input token range · (32k,128k] | Input $0.7059 / Output $3.53 / Cache read $0.1412 / Cache write $0.7059 | — | — |
| Input tokens <= 256K · Text to text · Input token range · (128k,256k] | Input $1.41 / Output $7.06 / Cache read $0.2824 / Cache write $1.41 | — | — |
| Prompt cache pricing | |||
| Cache read | $0.0941 | — | — |
| Cache write | $0.4706 | — | — |
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
Data is based on aggregate user requests, excluding status checks.
Open in Console
Open Doubao-Seed-2.0-Pro in Console with a prompt ready to edit or send.
Help me try doubao-seed-2.0-pro with a short message at /v1/responses. Show the reply, latency, and cost.
Use cases
Best for- Reasoning
- Vision
Research reasoning
Work through multi-stage maths, algorithm or science problems where intermediate steps must stay consistent.
Technical drawings and CAD tasks
Show a part diagram and ask for dimension checks or a modification plan, following the CAD-style tasks ByteDance demonstrates.
Complex agent workflows
Plan and execute long tool-using jobs, such as gathering data from several systems and reconciling the results.
Visual problem solving
Combine images with text questions, for example interpreting a lab plot and proposing the next experiment.
Prompt examples
This algorithm fails on inputs with duplicate keys. The code and a failing case are attached; find the flaw and prove the fix handles it.
The attached plot is from our assay. Explain what the curve shape suggests and list two follow-up experiments.
Plan a data migration across these four systems, list dependencies between steps, and call the tools in a safe order.
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-Pro?
It is the top model of ByteDance's Seed 2.0 series, launched on 14 February 2026. ByteDance describes it as built for long-chain reasoning and reliability in complex real-world workflows.
Is Seed 2.0 Pro multimodal?
Yes. It takes text and images, so it can read charts, diagrams, screenshots and scanned documents alongside your instructions, and reason across them in a single request.
How is Pro different from Lite and Mini?
Pro targets the hardest reasoning and workflow tasks. Lite balances quality with speed for production, and Mini is tuned for throughput. All three share tool calling and reasoning support.
Should I use Seed 2.0 Pro or Seed 2.1 Pro?
Seed 2.1 Pro is the later flagship, aimed at coding and agent work. Seed 2.0 Pro remains available if your prompts were tuned on it; compare both on your own evaluation set.
Does Doubao-Seed-2.0-Pro support structured output?
Yes. It supports JSON output against a response schema as well as tool calling, so its replies can feed downstream code directly without a fragile text-parsing step in between.
How much does Doubao-Seed-2.0-Pro cost?
On TokenLab, Doubao-Seed-2.0-Pro costs Input $0.4706 / Output $2.35 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-Pro?
Doubao-Seed-2.0-Pro 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-Pro use?
Use https://api.tokenlab.sh/v1/responses for Doubao-Seed-2.0-Pro. The request example below shows the matching code shape.
Which operations does Doubao-Seed-2.0-Pro support?
Doubao-Seed-2.0-Pro supports Text to text. Select an operation above to see its endpoint and request example.
Compare Doubao-Seed-2.0-Pro
Sources
Reviewed Oct 2, 2026
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