DeepSeek V4 Flash API
Access DeepSeek V4 Flash through one API key. 1M context, MoE speed, budget pricing.
DeepSeek's V4-generation efficiency model: 284B-parameter MoE with 13B activated, 1M token context, optimized for fast inference at ultra-low cost.
No credit card required. Takes 30 seconds.
DeepSeek V4 Flash API pricing
Pay per request from your YepAPI balance — no subscription, no monthly minimum. Prices updated October 23, 2026.
| Token type | Price |
|---|---|
| Input | $0.13 / 1M tokens |
| Output | $0.27 / 1M tokens |
| Context window | 1.0M tokens |
| What it costs | Per job | Per 1,000 |
|---|---|---|
| Chat reply1K input + 500 output tokens | $0.0003 | $0.265 |
| RAG answer8K input + 800 output tokens | $0.0013 | $1.26 |
| Agent step with tools30K input + 2K output tokens | $0.0044 | $4.44 |
| Long document summary100K input + 2K output tokens | $0.014 | $13.54 |
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 DeepSeek V4 Flash respond in real time.
Maximum tokens in the response.
Real-time tokens
DeepSeek V4 Flash specs
| Provider | DeepSeek |
|---|---|
| Model ID | deepseek/deepseek-v4-flash |
| Endpoint | /v1/ai/chat |
| Type | Text Generation |
| Context window | 1.05M tokens |
| Max output | 384K tokens |
| Reasoning | No |
| OpenAI-compatible | Yes — /v1/ai/chat/completions |
How to get a DeepSeek V4 Flash API key
- 1
Create a free account
Sign up at yepapi.com with Google or email. It takes about 30 seconds and needs no card.
- 2
Create an API key
Open the dashboard, go to API Keys and create a key. Copy it — it starts with yep_sk_.
- 3
Call DeepSeek V4 Flash
Send a request to /v1/ai/chat with the x-api-key header and model "deepseek/deepseek-v4-flash".
- 4
Pay as you go
Usage is billed per request from your balance. Top up any amount; there is no subscription.
Strengths
Accepts up to 1,048,576 input tokens, fitting entire codebases or large document sets into one request.
MoE design activates only 13B of its 284B parameters per token, delivering fast, efficient responses.
At $0.13 per 1M input tokens, it offers 1M-context, V4-generation capability at budget pricing.
A 284B-parameter mixture-of-experts with 13B activated, balancing capability and inference efficiency.
Quick start
Copy this snippet and start making calls with DeepSeek V4 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": "deepseek/deepseek-v4-flash",
"messages": [
{
"role": "user",
"content": "Explain API gateways in 2 sentences."
}
],
"maxTokens": 256
}),
});
const { data } = await res.json();
console.log(data.message.content);DeepSeek V4 Flash vs similar models
Every model below runs on the same API key — switch by changing the model ID.
| Model | Provider | Price | Context |
|---|---|---|---|
| DeepSeek V4 Flash | DeepSeek | $0.13 in / $0.27 out per 1M | 1.0M |
| DeepSeek V3.2 | DeepSeek | $0.41 in / $0.62 out per 1M | 164K |
| DeepSeek V4.1 Flash | DeepSeek | $0.44 in / $1.77 out per 1M | 1.0M |
| DeepSeek V4 Pro 0813 | DeepSeek | $0.97 in / $2.92 out per 1M | 1.0M |
| DeepSeek R1 0528 | DeepSeek | $0.74 in / $3.18 out per 1M | 164K |
| DeepSeek V4 Pro | DeepSeek | $1.41 in / $2.82 out per 1M | 1.0M |
| Nemotron 3 Super | NVIDIA | $0 in / $0 out per 1M | 262K |
| Qwen3.7 Flash | Qwen | $0.04 in / $0.19 out per 1M | 1M |
Why use DeepSeek V4 Flash through YepAPI?
DeepSeek V4 Flash API: 1M-context MoE efficiency model
DeepSeek V4 Flash is DeepSeek's V4-generation efficiency model, a 284B-parameter MoE with 13B activated, a 1M-token context window, and ultra-low pricing tuned for fast inference. YepAPI serves it through one OpenAI-compatible endpoint.
Your single YepAPI key also reaches Claude, Grok, Gemini, Kimi, and more, plus SEO, SERP, and scraping endpoints, so DeepSeek's cheap 1M context can feed your data pipelines.
What is DeepSeek V4 Flash?
DeepSeek V4 Flash is the efficiency-focused model in DeepSeek's V4 generation. It uses a 284-billion-parameter mixture-of-experts (MoE) architecture that activates just 13 billion parameters per token, which keeps inference fast and cheap while retaining large-model capability. It offers a 1,048,576-token context window and a very large 384,000-token output ceiling, so it can ingest entire codebases or document sets and still produce long responses. Positioned as DeepSeek's fast, low-cost V4 option, it is built for high-throughput workloads that need big context without flagship pricing.
Build with DeepSeek V4 Flash via YepAPI
Use YepAPI's OpenAI-compatible /v1/ai/chat endpoint with any OpenAI client. Set the base URL, add your key, and set the model string to DeepSeek V4 Flash; your existing messages and parameters carry over. Switching models is a single string change. Because one key reaches the full catalog, you can run large-context, high-volume work on V4 Flash and route harder reasoning to DeepSeek V4 Pro or other models, all from one integration.
DeepSeek V4 Flash API pricing — $0.13 input / $0.27 output per 1M tokens
DeepSeek V4 Flash costs $0.13 per 1M input tokens and $0.27 per 1M output tokens. For a V4-generation model with a 1M context window and MoE efficiency, this is exceptional value, far below comparable large-context models. Per-token billing means even very large inputs only cost what they consume, so you can routinely send big prompts in high-throughput pipelines without a steep bill.
DeepSeek V4 Flash for large-context, high-throughput tasks
DeepSeek V4 Flash is a strong fit when you need a big 1M-token context at low cost and fast turnaround, processing whole codebases, large document batches, or long histories at volume. The MoE design keeps inference efficient, and the 384K output ceiling supports long generations. It is the cost-efficient V4 choice for throughput-heavy workloads where you want large context and speed rather than maximum reasoning depth.
Try DeepSeek V4 Flash free
New YepAPI accounts get $5 in free credit with no card required. Given V4 Flash's low prices, that credit goes a long way, enough to test it on real large-context prompts, measure its speed, and compare it against other models on the same key before adding any payment method.
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
DeepSeek's V4-generation efficiency model: 284B-parameter MoE with 13B activated, 1M token context, optimized for fast inference at ultra-low cost.
DeepSeek V4 Flash costs $0.13 per 1M input tokens and $0.27 per 1M output tokens through YepAPI, billed per request with no monthly fee. For example, a chat reply (1K input + 500 output tokens) costs about $0.0003.
Sign up at yepapi.com (Google or email, about 30 seconds), open the dashboard and create an API key. The same key works for DeepSeek V4 Flash and every other model — no separate DeepSeek account or waitlist.
New YepAPI accounts in most countries get free signup credit, enough to test DeepSeek V4 Flash without a card. After that you pay per request at the rates above — there is no subscription.
Use "deepseek/deepseek-v4-flash" as the model on /v1/ai/chat. The short alias "deepseek-v4-flash" also works.
Yes. Point the OpenAI SDK at https://api.yepapi.com/v1/ai with your YepAPI key and set model to "deepseek/deepseek-v4-flash". Streaming works the same way, so existing OpenAI code only needs the base URL and key changed.
DeepSeek V4 Flash supports a 1.0M token context window with up to 384K output tokens per request.
Ready to use DeepSeek V4 Flash?
$5 free credit on signup. No credit card required. Pay per call.
Explore more models
DeepSeek V4.1 Flash
DeepSeekAccess DeepSeek V4.1 Flash through one API key. DeepSeek Ultra-Cheap Sparse MoE.
DeepSeek V4 Pro
DeepSeekAccess DeepSeek V4 Pro through one API key. Frontier reasoning at a fraction of flagship pricing.
DeepSeek V3.2
DeepSeekAccess DeepSeek V3.2 through one API key. Latest DeepSeek model.
Claude Sonnet 5
AnthropicAccess Claude Sonnet 5 through one API key. Anthropic Sonnet 5 Frontier Mid-Tier.
GLM 5 Turbo
Z.aiAccess GLM 5 Turbo through one API key. Fast bilingual model from Zhipu AI.
MiMo-V2.6-Pro-UltraSpeed
XiaomiAccess MiMo-V2.6-Pro-UltraSpeed through one API key. Xiaomi Flagship at 10× Speed.