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Bytedance Seed 1.8

Bytedance Seed 1.8 is ByteDance's generalized agentic model. It combines a Search Agent, Code Agent, and GUI Agent in one multimodal system with token-efficient visual encoding and three adaptive thinking modes.

ReasoningVision (Image)Implicit Cachingtiered-cost
index.ts
import { streamText } from 'ai'
const result = streamText({
model: 'bytedance/seed-1.8',
prompt: 'Why is the sky blue?'
})

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Provider
Context
Latency
Throughput
Input
Output
Cache
Web Search
Per Query
Capabilities
ZDR
No Training
Release Date
ByteDance
256K
1.1s
82tps
$0.25/M
$2.00/M
Read:
$0.05/M
Write:
+1
09/01/2025