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Seed 1.6
Model family: seed-1
ByteDance's prior-generation Seed line, superseded by Seed 2.0 but still sold as a budget API tier — the Seed 1.6 Flash variant is one of the cheapest models on Volcano Engine (around $0.02 per 1M input tokens).
Listing Notes
Superseded by the Seed 2.0 line (Feb 2026) but kept available as a low-cost option; the Seed 1.6 Flash variant is widely used as a cheap default for high-volume, simple tasks. ByteDance's "Seed 1.8: A Generalized Agentic Model" (Dec 2025) sits between this and Seed 2.0.
Identity
- Creator
- ByteDance
- Model family
- seed-1
- Release date
- 2025-05-31
Technical specs
- Parameter count
- Undisclosed; the prior-generation Seed family, still offered as a low-cost API option. The Seed 1.6 Flash variant is among the cheapest models on Volcano Engine.
- Context window
- 256K tokens
- Modalities
- Image Input
- Text
- Primary capabilities
- Chat
- Instruction Following
- Long Context
- Multilingual
- Reasoning
- Tool Use
- Vision
License
- License
- ByteDance / Volcano Engine Proprietary Terms
- Commercial use
- Allowed
- Terms
- Modification ✗
- Redistribution ✗
- Attribution ✗
Access
- Openness
- Closed Api
- Access methods
- Api First Party
- Cost tier
- Paid Api
- llm
- closed-api
- china-based
- budget
- prior-generation