ByteDance Seed 2.1 Turbo multimodal model built for coding and long-horizon agent workflows with a 256K context window
OffRail routes requests to the best providers that are able to handle your prompt size and parameters.
ByteDance Seed 2.1 Turbo multimodal model built for coding and long-horizon agent workflows with a 256K context window You can access it through OffRail's OpenAI-compatible API with automatic provider routing, fallback, and cost analytics.
Pricing for Seed 2.1 Turbo on OffRail starts at $0.50 per million input tokens and $2.50 per million output tokens, depending on the provider. The pricing table above always reflects the current per-provider rates.
Seed 2.1 Turbo supports a context window of up to 262,144 tokens on its largest provider deployment.
Seed 2.1 Turbo is served by NanoGPT through OffRail. Requests are automatically routed to the best available provider, with fallback when a provider has issues.
Seed 2.1 Turbo supports tool (function) calling and soft JSON output, but NOT strict JSON output schema (its upstream provider does not enforce it).
Seed 2.1 Turbo was released on August 10, 2026.