MiscSubjects

ByteDance Seed: Seed 2.1 Turbo

Seed 2.1 Turbo is a multimodal model from ByteDance Seed for coding and long-horizon agent workflows.

ByteDance SeedSeed 2.1 Turbo
bytedance-seed/seed-2-1-turbo
2026-08-12text+image+video->text
Input
$0.50
per 1M tokens
Output
$2.50
per 1M tokens
Context
262K
tokens it reads
Max output
236K
tokens it writes
Seed 2.1 Turbo is a multimodal model from ByteDance Seed for coding and long-horizon agent workflows. It is suited for end-to-end software delivery, multi-step task execution, and understanding visual and...
inspect — the catalog entry
{
  "id": "bytedance-seed/seed-2-1-turbo",
  "canonical_slug": "bytedance-seed/seed-2-1-turbo-20260810",
  "hugging_face_id": null,
  "name": "ByteDance Seed: Seed 2.1 Turbo",
  "created": 1786552176,
  "description": "Seed 2.1 Turbo is a multimodal model from ByteDance Seed for coding and long-horizon agent workflows. It is suited for end-to-end software delivery, multi-step task execution, and understanding visual and...",
  "context_length": 262144,
  "architecture": {
    "modality": "text+image+video->text",
    "input_modalities": [
      "text",
      "image",
      "video"
    ],
    "output_modalities": [
      "text"
    ],
    "tokenizer": "Other",
    "instruct_type": null
  },
  "pricing": {
    "prompt": "0.0000005",
    "completion": "0.0000025"
  },
  "top_provider": {
    "context_length": 262144,
    "max_completion_tokens": 235929,
    "is_moderated": false
  },
  "per_request_limits": null,
  "supported_parameters": [
    "frequency_penalty",
    "include_reasoning",
    "max_tokens",
    "reasoning",
    "response_format",
    "stop",
    "structured_outputs",
    "temperature",
    "tool_choice",
    "tools",
    "top_p"
  ],
  "default_parameters": {},
  "supported_voices": null,
  "knowledge_cutoff": null,
  "expiration_date": null,
  "links": {
    "details": "/api/v1/models/bytedance-seed/seed-2-1-turbo-20260810/endpoints"
  },
  "endpoints": [
    "/api/v1/chat/completions",
    "/api/v1/completions",
    "/api/v1/messages",
    "/api/v1/responses"
  ],
  "reasoning": {
    "mandatory": false
  },
  "benchmarks": null
}
openrouter.ai/bytedance-seed/seed-2-1-turbo
References (1)
  1. Stored model catalog — Nov 8, 2026
Invocation contract
JSONInvocation contract
4 keys
"create_task" 4 keys
"method""POST"
"url""/api/jarticles"
"headers" 1 key
"Content-Type""application/json"
"body" 6 keys
"slug""<UNIQUE_TASK_ID>"
"title""<TASK_TITLE>"
"kind""task"
"status""published"
"visibility""private"
"facts" 5 keys
"state""open"
"spec""<TASK_INSTRUCTIONS>"
"capability""model:openrouter/bytedance-seed/seed-2-1-turbo"
"tools" 1 item
"Files"
"inputs" 1 key
"max_tool_iterations"6
"prepare" 4 keys
"method""POST"
"url""/api/jarticles/{task}/prepare"
"headers" 1 key
"Content-Type""application/json"
"body"
"execute" 4 keys
"method""POST"
"url""/api/jarticles/{invocation}/execute"
"headers" 2 keys
"Content-Type""application/json"
"If-Match""<PREPARED_HASH>"
"body"
"authentication""Signed-in owner session, or X-Terminal-Key header"

Invocations and related objects

0 invocation records

Via
OpenRouter
Id
openrouter/bytedance-seed/seed-2-1-turbo
Model id
bytedance-seed/seed-2-1-turbo
Name
ByteDance Seed: Seed 2.1 Turbo
Description
Seed 2.1 Turbo is a multimodal model from ByteDance Seed for coding and long-horizon agent workflows.
Family
bytedance-seed
Canonical slug
bytedance-seed/seed-2-1-turbo-20260810
Price in
0.5
Price out
2.5
Price cache read
null
Price cache write
null
Price cache write 1h
null
Price web search
null
Price overrides
[]
Context
262144
Max completion tokens
235929
Modality
text+image+video->text
Input modalities
["text","image","video"]
Output modalities
["text"]
Tokenizer
Other
Knowledge cutoff
null
Created
1786552176
Moderated
false
Params
["frequency_penalty","include_reasoning","max_tokens","reasoning","response_format","stop","structured_outputs","temperature","tool_choice","tools","top_p"]
Default parameters
{}
Tools
true
Reasoning
true
Reasoning efforts
null
Reasoning default effort
null
Reasoning mandatory
false
Reasoning default enabled
null
Vision
true
Expiration date
null

Connected subjects

All AIModel ↗

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Page dataOpen JSON
page.json
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