ByteDance Seed: Seed 2.1 Turbo

bytedance-seed/seed-2-1-turbo · ByteDance SeedNot yet established

Declared family: Unknown
Evidence confidence: Unknown
Declared tokenizer tag: Other
Entered catalogue: 12 August 2026
Last tested: Not yet measured
Measurement: Awaiting measurement

Evidence stack

Signals of different kinds, weighed together

Signal	Result	Reference
Tokenizer signature	Not measured	–
API surface	No other entry shares this exact contract	api_c310bc1f
Context and output	262,144 context · 262,144 max output	declared
Reasoning contract	Optional	declared
Serving providers observed	None recorded yet	–

Declared record

What the catalogue claims about this model

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...

Modalities: text+image+video->text
Declared tokenizer: Other
Prompt price: $0.50 / M tokens
Completion price: $2.50 / M tokens

Supported parameters

frequency_penaltyinclude_reasoningmax_tokensreasoningresponse_formatstopstructured_outputstemperaturetool_choicetoolstop_p

defaults: {}

Catalogue entry

History

Every observation, kept as taken

12 August 2026Enters the OpenRouter catalogue with no declared family.

Cite this page as the evidence record for ByteDance Seed: Seed 2.1 Turbo: the URL is stable, measurements are dated, and revisions append to the history above. Method: tokenizer fingerprinting, v1, 50 strings. The raw data behind every figure is on the data page.