Seed 2.1 Turbo is ByteDance's language model with a 262K context window, starting at $0.5 / 1M input and $2.50 / 1M output. A multimodal LLM from ByteDance Seed optimized for coding and long-horizon agentic workflows including multi-step task execution and visual understanding.
Specifications
Canonical IDbytedance-seed-2-1-turbo
TypeLanguage
StatusActive
CreatorByteDanceByteDance
Providers
Context Window262K tokens
Input ModalitiesImageTextVideo
Output ModalitiesText
Reasoning Effortsdefault
Release Date · 2 days ago

Capabilities

Input3/5
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
OpenRouter logo
OpenRouter
bytedance-seed/seed-2-1-turbo
$0.5$2.50

Cost Calculator

US Dollar ($)
Preset:

Versions

VersionReleasedContextInput / 1MOutput / 1MStatus
Seed 2.1 Turbo262K$0.500$2.50Current
Seed 2 Code262K$0.500$3.00Available
Seed 2 Lite262K$0.250$2.00Available
Seed 2 Mini262K$0.100$0.400Available
Seed 2 ProAvailable
Seed-TTS 2.0Available
Seed 1.6262K$0.250$2.00Available
Seed 1.6 Flash262K$0.075$0.300Available
Seed 1.8256K$0.250$2.00Available

Model IDs

bytedance-seed-2-1-turbo
bytedance-seed/seed-2-1-turbo