Question 1

What is Seed 2.1 Turbo?

Accepted Answer

Seed 2.1 Turbo is a model from ByteDance, released on Jun 23, 2026. Seed 2.1 Turbo is a multimodal model from ByteDance Seed for coding and long-horizon agent workflows. It is suited for end-to-end software delivery, multi-step task execution, and understanding visual and...

Question 2

How much does Seed 2.1 Turbo cost?

Accepted Answer

On the Respan gateway, input starts at $0.50 per 1M tokens on OpenRouter, and output starts at $2.50 per 1M tokens on OpenRouter, after gateway discounts. Averaged across 2 providers, it costs $0.56 per 1M input tokens and $2.81 per 1M output tokens.

Question 3

Which providers serve Seed 2.1 Turbo on Respan?

Accepted Answer

2 providers serve Seed 2.1 Turbo: OpenRouter and EmpirioLabs.

Question 4

What is Seed 2.1 Turbo's context window?

Accepted Answer

Seed 2.1 Turbo accepts up to 262K tokens of context on its largest provider route.

Question 5

How do I use Seed 2.1 Turbo with the Respan gateway?

Accepted Answer

Point any OpenAI-compatible SDK at https://api.respan.ai/api/ with your Respan API key and set the model to "seed-2-1-turbo". To set it up with a coding agent, copy the agent setup prompt at the top of this page.

Question 6

How fast is Seed 2.1 Turbo?

Accepted Answer

Over the last 30 days of requests through the Respan gateway, the fastest provider was OpenRouter at 23 tokens per second, and the lowest response latency was 2.8 seconds on OpenRouter. Speed varies with request size and provider.

Provider	Context	Input	Output	Capabilities
OpenRouter`openrouter/bytedance-seed/seed-2-1-turbo`	262K	$0.50/M	$2.50/M
EmpirioLabs`empiriolabs/seed-2-1-turbo`	256K	$0.63/M	$3.13/M

Seed 2.1 Turbo

Providers

Certified where it counts.

Pricing

Cost by volume

Throughput and latency

Output speed

Response latency

Apps

Seed 2.1 Turbo FAQ

Works with your entire stack

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