Models.dev

An open-source database of AI models

Seed 2.1 Pro

Flagship ByteDance Seed 2.1 model for complex multimodal reasoning, coding, and agents

bytedance-seed/seed-2.1-pro
Lab
Bytedance Seed
Family
seed
Providers
2
Context
256,000
Output limit
256,000
Knowledge
-
Release
2026-06-23
Updated
2026-06-23
Weights
Closed
Input
Output types
Capabilities
tools, reasoning, structured, temperature

Providers

2
Provider Lab Model ID Context Output Price Reasoning Tool Call Structured Temperature
OfoxBytedance Seedvolcengine/doubao-seed-2.1-pro256,000256,000$0.71 / $3.54YesYesYesYes
Volcengine ArkBytedance Seeddoubao-seed-2-1-pro-260628256,000256,000$0.89 / $4.45YesYesYesYes
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Models.dev is a comprehensive open-source database of AI model specifications, pricing, and features.

The homepage starts with provider-agnostic model metadata. Model pages list the providers serving that model; provider pages list every model available from that provider; lab pages group canonical models by author.

API

You can access provider data, provider-agnostic model metadata, or the combined catalog through JSON endpoints.

Logos

Provider logos are available at /logos/{provider}.svg where {provider} is the provider ID. Lab logos are available at /logos/labs/{lab}.svg.

SDK

Use the SDK to query the API from your app. It's type-safe and exports the latest snapshot for offline use.

Contribute

The data is stored in GitHub as TOML files organized by provider and canonical model.