Seed-OSS-36B

by ByteDance · Seed family · released Sep 10, 2025
Open weights Active

ByteDance Seed's open-source 36B reasoning model featuring a controllable 'thinking budget' for inference-time scaling. It was the first open model in ByteDance's Seed-OSS line with chain-of-thought controllability.

This model has no first-party API. Open-weight release: self-host from the published weights.

Specifications

Model typeText LLM
ArchitectureDense
Parameters36
Context windowNot disclosed tokens
Max outputNot disclosed tokens
Knowledge cutoffNot disclosed
LicenseApache License 2.0
Modalities Text input Text output
Tags Reasoning Tool use
End of lifeNot disclosed
WeightsDownload
Last verifiedNot disclosed