ByteDance Seed · Released Jun 23, 2026Seed Character
ByteDance Seed model optimized for character-driven dialogue and consistent conversational behavior.
- Capability
- —No ECI score yet
- Input
- $0.119per 1M tokens
- Output
- $0.297per 1M tokens
- Context
- 256K256K max output
What it costs
- Input
- $0.119per million tokens
- Output
- $0.297per million tokens
- Cached input
- $0.024per million tokens
- Over 32K tokens
- $0.178 / $0.891input / output per million
- Blended (3:1)
- $0.163cheaper than 82% of priced models
Typical monthly bills
| Monthly usage | Estimated cost |
|---|---|
| Side project2M input + 0.5M output tokens | $0.386 |
| Team assistant25M input + 5M output tokens | $4.45 |
| Production app250M input + 50M output tokens | $44.53 |
Official Volcengine Ark API price, as listed on models.dev.
Independent benchmarks
Epoch AI has not published a Capabilities Index score for Seed Character yet.
The details
- Lab
- ByteDance Seed
- Released
- Jun 23, 2026
- Context window
- 256,000 tokens
- Max output
- 256,000 tokens
- Inputs
- Text, Images, Video
- Output
- Text
- Reasoning
- Adjustable effort minimal · low · high
- Tool calling
- Yes
- Structured output
- Yes
- Weights
- Proprietary
- API model ID
doubao-seed-character-260628on Volcengine Ark- Availability
- 2 API providerslisted on models.dev
More from ByteDance Seed
About Seed Character
How much does Seed Character cost?
Seed Character costs $0.119 input / $0.297 output per million tokens (official Volcengine Ark API price). Cached input is $0.024 per million tokens. Requests over 32K tokens are billed at $0.178 input / $0.891 output. At a 3:1 input-to-output mix that is $0.163 per million tokens, cheaper than 82% of the 360 priced models we track.
What is the context window of Seed Character?
Seed Character accepts up to 256,000 tokens per request and can write up to 256,000 tokens in one response.
How good is Seed Character?
Epoch AI has not published a Capabilities Index score for Seed Character yet.
Is Seed Character open source?
No. Seed Character is proprietary; you use it through Volcengine Ark’s API or partner platforms.
What inputs does Seed Character support?
Seed Character accepts text, images and video and replies in text. It is a reasoning model with minimal, low and high effort settings, supports tool calling and can return structured JSON output.
When was Seed Character released?
ByteDance Seed released Seed Character on Jun 23, 2026.
What are the best alternatives to Seed Character?
The closest current models from other labs on capability, price and release date are MiMo-V2.5 (Xiaomi, $0.14 / $0.28), Gemma 4 12B IT (Google, $0.075 / $0.275), Step 3.5 Flash 2603 (StepFun, $0.10 / $0.30) and Laguna S 2.1 (Poolside, $0.10 / $0.20).