Seed 2.1 Turbo

ByteDance Seed 2.1 Turbo multimodal model built for coding and long-horizon agent workflows with a 256K context window

seed-2-1-turbo
STABLEGet StartedView uptime
262,144 context
Released August 10, 2026
Starting at $0.50/M input tokens
Starting at $2.50/M output tokens
Streaming
Tools
Reasoning
JSON Output
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All Providers for Seed 2.1 Turbo

LLM Gateway routes requests to the best providers that are able to handle your prompt size and parameters.

NanoGPT
Context: 262.1k
Input
$0.5
/M tokens
Cache Read
/M tokens
Output
$2.5
/M tokens
Get Started

Frequently asked questions

What is Seed 2.1 Turbo?

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 LLM Gateway's OpenAI-compatible API with automatic provider routing, fallback, and cost analytics.

How much does Seed 2.1 Turbo cost?

Pricing for Seed 2.1 Turbo on LLM Gateway 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.

What is the context length of Seed 2.1 Turbo?

Seed 2.1 Turbo supports a context window of up to 262,144 tokens on its largest provider deployment.

Which providers serve Seed 2.1 Turbo?

Seed 2.1 Turbo is served by NanoGPT through LLM Gateway. Requests are automatically routed to the best available provider, with fallback when a provider has issues.

Does Seed 2.1 Turbo support tool calling and structured outputs?

Yes. Seed 2.1 Turbo supports both tool (function) calling and structured JSON outputs through LLM Gateway.

When was Seed 2.1 Turbo released?

Seed 2.1 Turbo was released on August 10, 2026.