Question 1

What is Seed 1.6 Flash?

Accepted Answer

Seed 1.6 Flash is a model from ByteDance, released on Jun 11, 2025. Seed 1.6 Flash is an ultra-fast multimodal deep thinking model by ByteDance Seed, supporting both text and visual understanding. It features a 256k context window and can generate outputs of up to 16k tokens.

Question 2

How much does Seed 1.6 Flash cost?

Accepted Answer

On the Respan gateway, input starts at $0.07 per 1M tokens on OpenRouter, and output starts at $0.30 per 1M tokens on OpenRouter, after gateway discounts.

Question 3

Which providers serve Seed 1.6 Flash on Respan?

Accepted Answer

Seed 1.6 Flash is served by OpenRouter.

Question 4

What is Seed 1.6 Flash's context window?

Accepted Answer

Seed 1.6 Flash accepts up to 262K tokens of context.

Question 5

How do I use Seed 1.6 Flash 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-1.6-flash". 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 1.6 Flash?

Accepted Answer

Over the last 30 days of requests through the Respan gateway, the fastest provider was OpenRouter at 64 tokens per second, and the lowest response latency was 1.0 seconds on OpenRouter. Speed varies with request size and provider.

Seed 1.6 Flash

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Seed 1.6 Flash FAQ

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