Seed 1.8 is ByteDance's language model with a 256K context window and up to 64K output tokens, available from 2 providers, starting at $0.25 / 1M input and $2.00 / 1M output. A multimodal LLM optimized for agent scenarios with enhanced agent capabilities, upgraded multimodal comprehension, and flexible context management.
Specifications
Canonical IDbytedance-seed-1-8
TypeLanguage
StatusActive
CreatorByteDanceByteDance
Providers
Context Window256K tokens
Max Output64K tokens
Input ModalitiesImage
Output ModalitiesText
Reasoning Effortsdefault
Release Date · 1 year ago

Capabilities

Input1/5
Text·
Image✓
Audio·
Video·
PDF·
Output1/5
Text✓
Image·
Audio·
Video·
Embedding·
Capabilities4/13
Reasoning✓
Adaptive Reasoning·
Function Calling✓
Parallel Function Calling·
Structured Outputs✓
Native JSON Schema·
Web Search·
URL Context·
Computer Use·
Code Execution·
File Search·
Prompt Caching✓
Assistant Prefill·

Pricing by Provider

US Dollar ($)
Per 1M tokens
ProviderStandard
Input
$ / 1M
Output
$ / 1M
Cache Read
$ / 1M
DeepInfra logo
DeepInfra
deepinfra/ByteDance/Seed-1.8
$0.25$2.00$0.05
Vercel AI Gateway logo
Vercel AI Gateway
bytedance/seed-1.8
$0.25$2.00$0.05

Cost Calculator

US Dollar ($)
Preset:

Versions

VersionReleasedContextInput / 1MOutput / 1MStatus
Seed 2 Code262K$0.500$3.00Deprecating
Seed 2.1 Turbo262K$0.431$2.16Available
Seed 2 Lite262K$0.250$2.00Available
Seed 2 Mini262K$0.100$0.400Available
Seed 2 Pro—256K$0.500$3.00Available
Seed-TTS 2.0————Available
Seed 1.6262K$0.250$2.00Deprecating
Seed 1.6 Flash262K$0.075$0.300Deprecating
Seed 1.8256K$0.250$2.00Current

Model IDs

bytedance-seed-1-8
bytedance/seed-1.8
ByteDance/Seed-1.8
deepinfra/ByteDance/Seed-1.8