reasoning
Seed1.6-Thinking
ByteDance Seed variant of Seed1.6 trained for extended reasoning over text and images, served through the Volcano Engine API.
Levelmodel
Classreasoning
Parametersnot in the notes
Context256,000
ReleasedJun 2025
Opennessproprietary
Runs onnot in the notes
Statusactive
R&D Topics
Identity
Where this comes from
Developer and dates from the research notes. Release date is the vendor's public announcement; weights date is when open weights were published.
Architecture and Size
- Architecture
- MoE Sparse MoE building on Seed1.5; Seed1.6 Base has 23B active and 230B total parameters
- Total parameters
- – sources
- Active parameters
- –
- Checkpoint parameters
- –
- Note
- Blog gives 230B total, 23B active for Seed1.6 Base only, not for post-trained variants
- Context length
- 256,000 tokens
- Input
- text, image
- Output
- text
Where this comes from
Parameter counts as the developer states them. Where the checkpoint holds a different total, both are shown (register A16).
Openness and Access
- Openness
- proprietary
- Licence
- not in the notes sources
- Access routes
- API
Where this comes from
The licence file governs over registry tags and aggregator labels.
Deployment
- Runs on
- not in the notes
- Footprint
- not in the notes
- Runtimes
- not in the notes
Where this comes from
Deployment tiers and runtimes as named in the notes. Footprint is the notes' figure, not a measurement by AURION.
Indonesia
- Indonesian support
- not stated
- Regional languages
- not in the notes
- Jakarta hosting
- unknown
- Languages
- not in the notes
Where this comes from
Indonesia fields are carried on every model; unknown is an allowed value.
Benchmark Results
The notes record no benchmark result for this model.
Lineage
The notes record no lineage for this model.
Industry Use Cases
No industry use case links this model.
Links
DeveloperByteDancebig tech, China
ByteDancebig tech, ChinaModelSeed1.6-ThinkingByteDance, reasoning
Seed1.6-ThinkingByteDance, reasoningR&D TopicsReasoning via Large-Scale RL
Use CasesChinese Medical LLMsHealthcareUse cases of models in the same R&D topic; none is recorded for this model itself.
Who Runs Itnone recordedDeployments of these use cases; none names this model.
Organisations 1
Sources
- seed.bytedance.com/en/blog/introduction-to-techniques-used-in-se... https://seed.bytedance.com/en/blog/introduction-to-techniques-used-in-seed1-6
To cite this page: Project AURION, AI Use-Cases Research & Innovation, "Seed1.6-Thinking", https://aurion.semai.id/models/bytedance-seed-1-6-thinking/, records of October 2026.