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Seed 1.8 (251228)

ByteDance Seed 1.8 advanced vision model released December 28, 2025 with enhanced capabilities

seed-1-8-251228
STABLE
256,000 context
Starting at $0.25/M input tokens
Starting at $2.00/M output tokens
Streaming
Vision
Tools
Reasoning
JSON Output

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ByteDance

bytedance/seed-1-8-251228
Context Size
256k
Stability
STABLE
Pricing
Input
$0.25
/M
Cached
$0.05
/M
Output
$2.00
/M
Per Request
$0.000
/req
Capabilities
Streaming
Vision
Tools
Reasoning
JSON Output
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