Seed 1.6 Flash
Access Seed 1.6 Flash through one API key. Cheapest model from ByteDance.
ByteDance's cheapest model. Ultra-fast inference at rock-bottom pricing for simple tasks.
No credit card required. Takes 30 seconds.
2,400+
Developers
1.2M+
API calls served
100+
Endpoints
$0.01
Per call
Yep, that's it.
Try it live
Send a message and see Seed 1.6 Flash respond in real time.
Maximum tokens in the response.
Real-time tokens
Context Window
262K tokens
Max Output
33K tokens
Input Price
$0.10 / 1M tokens
Output Price
$0.42 / 1M tokens
Strengths
At $0.10 per 1M input and $0.42 per 1M output tokens, Seed 1.6 Flash is ByteDance's lowest-priced model, built for simple, high-volume tasks.
Optimized for speed, it returns responses with minimal latency, suiting real-time and interactive workloads.
Its lightweight, fast design sustains large batches of concurrent requests for bulk processing at scale.
A 262,144-token context window lets even this cheapest model read large inputs in one request, with up to 32,768 output tokens.
Quick start
Copy this snippet and start making calls with Seed 1.6 Flash.
const res = await fetch('https://api.yepapi.com/v1/ai/chat', {
method: 'POST',
headers: {
'x-api-key': 'YOUR_API_KEY',
'Content-Type': 'application/json',
},
body: JSON.stringify({
"model": "bytedance-seed/seed-1.6-flash",
"messages": [
{
"role": "user",
"content": "Explain API gateways in 2 sentences."
}
],
"maxTokens": 256
}),
});
const { data } = await res.json();
console.log(data.message.content);Why use Seed 1.6 Flash through YepAPI?
Seed 1.6 Flash API: the cheapest ByteDance model
Seed 1.6 Flash is ByteDance's cheapest and fastest model, built for simple, high-volume tasks where speed and per-call cost are what matter.
On YepAPI you call Seed 1.6 Flash through one OpenAI-compatible endpoint at $0.10 per 1M input and $0.42 per 1M output tokens, with a 262,144-token context window.
What is Seed 1.6 Flash?
Seed 1.6 Flash is the speed-and-cost-optimized version of ByteDance's Seed 1.6, and the cheapest model in the Seed line. It is built for the simple, high-volume work that makes up much of production traffic: extraction, classification, routing, and short generation, where ultra-fast responses and minimal cost beat deep reasoning. Despite its budget positioning it keeps a 262,144-token context window and up to 32,768 output tokens, so it can still read large inputs when needed. Its low latency suits interactive features, and its high throughput makes it well suited to processing very large batches quickly and cheaply.
Build with Seed 1.6 Flash via YepAPI
Call Seed 1.6 Flash through YepAPI's OpenAI-compatible /v1/ai/chat endpoint. Point your OpenAI SDK at YepAPI and set the model string to seed-flash; switching to a larger model later is a one-string change. A single YepAPI key also covers every other model plus SEO, SERP, and web-scraping tools, so a pipeline can scrape pages and extract fields from them cheaply with Flash, escalating only hard cases to a bigger model, all on one key.
Seed 1.6 Flash API pricing — $0.10 / $0.42 per 1M tokens
Seed 1.6 Flash costs $0.10 per 1M input tokens and $0.42 per 1M output tokens on YepAPI, the lowest in the Seed family. At those rates you can run extraction or classification across millions of records for a few dollars, making Flash the ideal first stage in tiered pipelines: clear the easy majority cheaply and fast, then route only ambiguous items to a costlier model. The 262K context means you rarely sacrifice input size for the savings.
Seed 1.6 Flash for fast, simple, high-volume tasks
Seed 1.6 Flash fits latency- and cost-sensitive bulk work: extracting emails and phone numbers from text, classifying records, routing requests, and generating short responses across huge volumes. Its ultra-fast inference keeps interactive features responsive, and its throughput handles big batches without queue backups. For the large share of work that is simple but high in count, Flash delivers the speed and price that make it economical at scale.
Try Seed 1.6 Flash free
New YepAPI accounts include $5 of free credit with no card required. Given Flash's rock-bottom rates, that covers a very large test batch, so you can validate speed and accuracy on your own high-volume data before scaling up.
Start generating in 30 seconds
$5 free credit on signup. No credit card required. Pay per call.
What developers say
“Switched from SerpAPI and cut our SERP costs by 80%. Same data quality, way simpler billing.”
“One API key for AI models, SERP data, and web scraping. Saved us from managing 4 separate providers.”
“The $5 free credit let us prototype our entire rank tracking feature before committing. No other API does that.”
Frequently asked questions
ByteDance's cheapest model. Ultra-fast inference at rock-bottom pricing for simple tasks.
Input tokens cost $0.10 per 1M tokens and output tokens cost $0.42 per 1M tokens through YepAPI. No monthly minimums — you only pay for what you use.
Sign up for a free API key, then send requests to the /v1/ai/chat endpoint.
Seed 1.6 Flash supports a 262K token context window with up to 33K output tokens per request.
Ready to use Seed 1.6 Flash?
$5 free credit on signup. No credit card required. Pay per call.
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