doubao · Efficient
Doubao Seed Character
ByteDance's character-focused Doubao Seed model for roleplay, persona consistency, dialogue, and creative character interactions. It supports text and image input with a 128k context window. Requests route through ZenMux to ByteDance; ZenMux does not publish a model-API zero-retention or training guarantee, so avoid sensitive data.
- Reasoning
- Vision
- Input
- Text, Images
- Output
- Text
- Reasoning effort
- none · high
- Discovery tier
- Efficient
Pricing
USD per 1M tokens- Input
- $0.15
- Output
- $0.37
- Cache read
- $0.03
- Cache write
- $0.003
Reference prices as published by the model provider. API example
Specifications
- Context window
- 128K
- Max output
- 32.8K
- Average output (7 days)
- 215 tokens
- Longer than 23% of 468 models
Side by side
Doubao Seed Character compared
Specifications, prices, speed and benchmark scores next to each other. Benchmarks below show every compared model too.
| Doubao Seed CharacterdoubaoThis model | Ultramarine 1 FlashpaperinstrumentsRemove | |
|---|---|---|
| Provider | doubao | paperinstruments |
| Discovery tier | Efficient | Efficient |
| Added | Jul 18, 2026 | Oct 15, 2026 |
| Limits | ||
| Context window | 128K | — |
| Max output | 32.77K | 32.77K |
| Average output | 215 tokens | — |
| Pricing, USD per 1M tokens | ||
| Input | $0.15 | $0.15 |
| Output | $0.37Best | $0.50 |
| Cache read | $0.03 | $0.03 |
| Cache write | $0.003 | — |
| Performance | ||
| Throughput | 63.8 tok/s | — |
| Time to first token | 2.6 s | — |
| Request success (24h) | 100.0%Best | 95.7% |
| Capabilities | ||
| Reasoning | Yes | Yes |
| Tools | No | Yes |
| Vision | Yes | Yes |
| Structured output | No | Yes |
| Parallel tools | No | Yes |
| Reasoning effort | none, high | low, high, max |
Public evaluations
Benchmarks
There are no public benchmark results for these models yet.
Live routing data
Performance and reliability
Recent averages across requests routed for this model. Your own speed depends on prompt length, reasoning effort and load.
- Throughput
- 63.8 tok/s
- Faster than 43% of 254 models
- Time to first token
- 2.6 s
- Quicker than 65% of 254 models
- Prompt cache hits
- 63.6%
- About $0.0737 per 1M input tokens with caching
- Request success (24h)
- 100.0%
- Reliable
Cache hits are the share of input tokens recently served from a prompt cache across all requests. They are not a forecast of your own hit rate.
- Healthy (98% or more)
- Degraded (90–98%)
- Down (under 90%)
- No requests
Developers
Use it through the API
Noumen’s API is OpenAI-compatible: any Chat Completions client works with a base URL and a key.
curl https://www.noumen.xyz/api/v1/chat/completions \
-H "Authorization: Bearer $NOUMEN_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "bytedance/doubao-seed-character",
"reasoning_effort": "none",
"messages": [{ "role": "user", "content": "Explain this stack trace." }]
}'import os
from openai import OpenAI
client = OpenAI(base_url="https://www.noumen.xyz/api/v1", api_key=os.environ["NOUMEN_API_KEY"])
reply = client.chat.completions.create(
model="bytedance/doubao-seed-character",
messages=[{"role": "user", "content": "Explain this stack trace."}],
)
print(reply.choices[0].message.content)doubao
Related models
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