bytedance-seed-1-8
ByteDance's Seed 1.8 is a chat model capable of handling a wide range of tasks, including streaming, web search, code execution, and function calling, with extended thinking and structured output capabilities. It is genuinely best at handling complex, high-context conversations due to its large context window of 256,000 tokens.
Input
Output
Context
256K
Max Output
64K
Parameters
-
Technical Specifications
Model TypeChat
Context Window256,000 tokens
Max Output Tokens64,000 tokens
ParametersNot available
Release DateDec 18, 2025
Training CutoffNot available
Licenseproprietary
Open SourceNo
Input Modalities
TextImageAudioVideo
Output Modalities
Text
Capabilities
Resources & Links
proprietary, Proprietary - API access only
Related Tools
Data sourced from official provider APIs and documentation
Last updated: Jun 23, 2026
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