ByteDance
LLM
Big
Closed weights
Seed2.1 Pro
142 days since ByteDance announced it ·
Seed2.1 Pro is a closed-weights LLM from ByteDance, announced 23 Jun 2026.
- Input
- —
- per 1M tokens
- Cache write
- —
- per 1M tokens
- Cache read
- —
- per 1M tokens
- Output
- —
- per 1M tokens
- Context window
- —
- tokens
- Parameters
- —
- not disclosed
No price on the lab’s own pages.
- Announcement
- seed.bytedance.com/en/blog/seed2-1-officially-released-advancing-ai-productivity
- Our story
- Our story
Our coverage
1 storyByteDance · Big · Seed
closed weights- Seed2.1 Pro
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