Capability badges appear only where the provider catalog explicitly lists support. A blank cell means the source is silent, not that the feature is absent.
Listed rates
Price across providers
Input price per million tokens as published by each provider. Bars are drawn from listed rates only — no traffic weighting, since the catalog observes no requests.
Lowest input$0.12/M
Across 2 priced providers
Median input$0.185/M
Midpoint of listed rates
Highest input$0.25/M
2.1× the lowest listed rate
Output range$0.29 – $2
Per million output tokens
Ofox$0.12/MLowest
Vercel AI Gateway$0.25/M
Cost calculator
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Excludes taxes, non-token charges, and tiered discounts.
Specification
Capabilities
Recorded from the source catalog and provider listings.
Every result stays attached to its source, version, metric and harness. Scores from different versions are never merged, and the profile below plots each benchmark against its own population rather than on a shared scale.
ModelBench does not infer quality from price, context size, or model name. When a source publishes a comparable result, it appears here with its version and link.
Answered directly from the stored record — nothing here is generated beyond the catalog's own fields.
What is Seed 1.8?
ByteDance Seed model for multimodal reasoning, long-context analysis, and agent workflows. It is published by Bytedance Seed and catalogued here from Models.dev.
How much does Seed 1.8 cost?
Listed input pricing starts at $0.12 per million tokens from Ofox, rising to $0.25 across 2 listed providers.
What is the context length of Seed 1.8?
Seed 1.8 accepts up to 256K tokens of context and returns up to 64K output tokens.
Does Seed 1.8 support tool calling and structured output?
Provider catalogs list support for tool calling, and reasoning.
Which providers serve Seed 1.8?
2 providers list this model: Ofox, Vercel AI Gateway.
Are the weights for Seed 1.8 open?
No. This model is served through hosted APIs only.
When was Seed 1.8 released?
The catalog records a release date of 2025-12-28, last verified Aug 17, 2026.
Ofox