Doubao-Seed-1.8 API
About
Build advanced reasoning agents with Doubao-Seed-1.8, a specialized AI model optimized for complex logic and chain-of-thought tasks. This model delivers cost-effective pricing at $0.11/1M input and $0.28/1M output tokens, native tool calling support. Access Doubao-Seed-1.8 via the ZenMux API with up to 64K output tokens.
Capabilities
Input Modalities
textimagevideo
Output Modalities
text
Reasoning
Yes
Structured Output
No
Tool Use
Yes
WeightsClosed
Temperature
Adjustable
Attachment
Supported
Limits
Context Window
256K
Tokens
Input Limit
256K
Tokens
Max Output
64K
Tokens
Pricing
Standard (per 1M tokens)
Input
$0.11
Output
$0.28
Caching (per 1M tokens)
Read
$0.02
Write
$0.0024
Frequently Asked Questions
Doubao-Seed-1.8 by ZenMux costs $0.11 per 1M input tokens and $0.28 per 1M output tokens. Cached reads cost $0.02 per 1M tokens. Cache writes cost $0.0024 per 1M tokens.
Model Details
ID
volcengine/doubao-seed-1.8
Provider
ZenMuxFamily
Release Date
Dec 18, 2025
Knowledge Cutoff
Jan 1, 2025
API Integration
NPM Package
@ai-sdk/openai-compatible
Environment Variables
ZENMUX_API_KEY
API Base URL
https://zenmux.ai/api/v1