Seed 2.1 Preview

Released
2026-06-19
Last refreshed
2026-07-10
Status
Researched 132d ago
Pre-releaseProprietaryCommercial use: restricted

Seed 2.1 Preview is a watchlist entry, not a production pick; wait for published weights, API access, pricing, context, and benchmarks before planning a migration.

ByteDance releases · 22 in the last 12 months · this family litChangelog →
Specifications
Availability
Pre-release
Family
Seed 2
Released
2026-06-19
Openness
Proprietary
License
ProprietaryRestricted
Weights
Not released
Code
Unknown
Created by
ByteDance

TikTok data enhances AI realism

Beijing, China
Founded 2012
Website
Pricing

No tracked provider pricing is available yet.

Links
Website

About

Seed 2.1 Preview (official name: Seed-2.1-Pro-Preview) is ByteDance Seed's next-generation language model, released June 19, 2026 for early community access via Arena AI's Code arena (arena.ai). The announcement notes planned integration with Feishu Spark and Coze within two weeks of the June 19 release. Technical specifications (context window, parameters, pricing) have not been disclosed. This is an early-access preview; no public API is available as of the research date.

Providers

No active provider routes are tracked for this model yet.

Capabilities

No model capability flags are currently sourced.

Benchmark peer barsfor Coding

No task-mapped benchmark peers are available for this model yet.

Migration checks

No linked migration route is available for this model yet.