Identity
- Status
- active
- Developer ID
seed-1.8- Released
- Not reported
- Version
- Seed 1.8
- License
- Unknown
ByteDance SeedSeed 1.8
Seed 1.8 is a ByteDance Seed model for multimodal reasoning and agentic productivity.
- Token context
- Unknown
- Inputs
- Text, Image
- Outputs
- Text
- Released
- Not reported
Providers & Pricing
0 current hosted offerings
No Current Hosted API Offering Verified
The developer states that API access is available, but Model Markets has not verified an exact provider endpoint or published price for this model version.
At a Glance
Model Facts
Capacity
- Token context
- Unknown
- Maximum output
- Unknown
- Total parameters
- Unknown
- Active parameters
- Unknown
- Knowledge cutoff
- Not reported
Interface and Access
- Inputs
- Text, Image
- Outputs
- Text
- API available
- Yes
- Open weights
- No
- Self-hostable
- No
- Reasoning
- Yes
- Vision
- Yes
- Tool calling
- Yes
- Capabilities
- chat, generation, reasoning, tools
This page represents one developer model product. Dated API snapshots, serving endpoints, pricing, regions, quantizations, and service tiers attach as versioned aliases or provider details and never create duplicate public model records.
Version Lineage
PredecessorUnknown
SuccessorsUnknown
Aliasesseed-1.8, Seed 1.8
Explicit Unknowns
- Release date
- Maximum output
- Architecture
- Tokenizer
- Knowledge cutoff
- Provider pricing
Primary Evidence
Sources and Observation Date
Comparable Peers
Related Model Comparisons
| A | Pair | B | Context |
|---|---|---|---|
Seed 1.8ByteDance Seed | vs | Seed 2.1 ProByteDance Seed | family variantsimage, text |
Seed 1.8ByteDance Seed | vs | Claude Opus 4.5Anthropic | cross-developer peersimage, text |
Seed 1.8ByteDance Seed | vs | Claude Opus 4.6Anthropic | cross-developer peersimage, text |
Seed 1.8ByteDance Seed | vs | Claude Opus 4.7Anthropic | cross-developer peersimage, text |
Seed 1.8ByteDance Seed | vs | Seed 2.0 MiniByteDance Seed | family variantsimage, text |
Seed 1.8ByteDance Seed | vs | Seed 2.1 EvolvingByteDance Seed | family variantsimage, text |
Seed 1.8ByteDance Seed | vs | Seed 2.1 TurboByteDance Seed | family variantsimage, text |
Seed 1.8ByteDance Seed | vs |  GPT-5OpenAI | cross-developer peersimage, text |
Seed 1.8ByteDance Seed | vs | GPT-5.2OpenAI | cross-developer peersimage, text |
Seed 1.8ByteDance Seed | vs | GPT-5.2 ProOpenAI | cross-developer peersimage, text |
Seed 1.8ByteDance Seed | vs | GPT-5.4 MiniOpenAI | cross-developer peersimage, text |
Seed 1.8ByteDance Seed | vs | GPT-5.4 NanoOpenAI | cross-developer peersimage, text |
Questions
Seed 1.8 FAQs
What is Seed 1.8?+
Seed 1.8 is a ByteDance Seed model for multimodal reasoning and agentic productivity. It is developed by ByteDance Seed and its current sourced lifecycle status is active.
What inputs and outputs does Seed 1.8 support?+
Seed 1.8's current record lists Text and Image as input and Text as output.
Is Seed 1.8 available through an API?+
Seed 1.8 is marked as API-available. No directly sourced serving-provider record is attached yet.
How much does Seed 1.8 cost through an API?+
No directly sourced token price is currently attached to Seed 1.8. Missing prices remain unknown rather than being inferred from another model or provider.
What capabilities and tasks does Seed 1.8 support?+
Seed 1.8's recorded capabilities are chat, generation, reasoning, and tools. Its supported tasks are image, reasoning, and text.
Can Seed 1.8 be self-hosted?+
Seed 1.8 is not marked as an open-weight model. Self-hosting is marked as unsupported, with no license recorded.
Does Seed 1.8 have related versions or aliases?+
No predecessor is recorded. No successor is recorded. Recorded aliases are seed-1.8 and Seed 1.8.
Which models can Seed 1.8 be compared with?+
The current compatible peer set includes Seed 2.1 Pro, Claude Opus 4.5, Claude Opus 4.6, Claude Opus 4.7, and Seed 2.0 Mini. Compatibility requires shared sourced modalities and tasks; it does not imply that one model is better. Browse model comparisons →
How current is the Model Markets record for Seed 1.8?+
Seed 1.8 was last verified Sep 3, 2026 from ByteDance Seed's primary source, “Seed 1.8 | ByteDance Seed.” The evidence is classified as official fact.