DeepSeek V4 Pro API
FeaturedDeepSeek
DeepSeek V4 Pro — 1.6T-parameter MoE model with 49B active parameters, 1M context, advanced reasoning, coding, and long-horizon agentic workflows.
About DeepSeek V4 Pro
DeepSeek V4 Pro is a large language model developed by DeepSeek. It's particularly well-suited for tackling complex, multi-step reasoning problems, orchestrating tool-using agents that call APIs and external services, producing structured outputs for reliable data extraction, and handling large contexts of up to 1M tokens. Its 1M-token context window means you can pass in entire documents, codebases, or conversation histories without losing context. Developers choose DeepSeek V4 Pro when they need reliable, production-quality AI inference through a simple API — and on Qubax, it's available at a fraction of the cost of traditional providers.
In the broader AI landscape, DeepSeek V4 Pro sits among the frontier-tier offerings from DeepSeek With advanced reasoning and agentic tool use, it competes with the most frontier-tier models on the market. What sets it apart on Qubax isn't just the model itself — it's the accessibility. Rather than dealing with enterprise contracts or traditional payment rails, you get instant access via an OpenAI-compatible endpoint. That means you can drop DeepSeek V4 Pro into Cursor, Cline, LangChain, or any framework that speaks the OpenAI protocol and start building immediately.
Qubax offers DeepSeek V4 Pro at 83% below OpenRouter's price — just $0.073 per million input tokens and $0.147 per million output tokens. That pricing advantage compounds quickly at scale: a high-volume application sending millions of tokens per day can save significantly compared to using OpenRouter or the provider directly. And because Qubax runs on crypto-native infrastructure, you can pay with USDC, USDT, ETH, BTC, or 200+ other cryptocurrencies — no credit card or bank account required. New users even get $1 in free credits to test DeepSeek V4 Pro risk-free before committing.
Pricing
| Token Type | Qubax | OpenRouter | You Save |
|---|---|---|---|
| Input (per 1M tokens) | $0.073 | $0.435 | 83% |
| Output (per 1M tokens) | $0.147 | $0.870 | 83% |
Prices per 1 million tokens. Pay with 200+ cryptocurrencies.
Estimated Monthly Cost
Specifications
Use Cases
Capabilities
Quick Start
from openai import OpenAI
client = OpenAI(
base_url="https://api.qubax.ai/v1",
api_key="qbx_live_YOUR_API_KEY",
)
response = client.chat.completions.create(
model="deepseek-v4-pro",
messages=[
{"role": "user", "content": "Hello!"}
],
)
print(response.choices[0].message.content)import OpenAI from "openai";
const client = new OpenAI({
baseURL: "https://api.qubax.ai/v1",
apiKey: "qbx_live_YOUR_API_KEY",
});
const response = await client.chat.completions.create({
model: "deepseek-v4-pro",
messages: [{ role: "user", content: "Hello!" }],
});
console.log(response.choices[0].message.content);curl https://api.qubax.ai/v1/chat/completions \
-H "Content-Type: application/json" \
-H "Authorization: Bearer qbx_live_YOUR_API_KEY" \
-d '{
"model": "deepseek-v4-pro",
"messages": [{"role": "user", "content": "Hello!"}]
}'Get your API key from the dashboard. New users get $1 free credits.
Why use DeepSeek V4 Pro on Qubax?
83% Cheaper
Up to 83% off OpenRouter prices
Pay with Crypto
200+ coins (BTC, ETH, SOL, USDT, USDC & more). No credit card needed.
OpenAI Compatible
Drop-in replacement. Works with Cline, Cursor, any tool.
More from DeepSeek
Compare DeepSeek V4 Pro with alternatives
| Model | Provider | Input / 1M | Output / 1M | vs DeepSeek V4 Pro |
|---|---|---|---|---|
| DeepSeek V4 Pro | DeepSeek | $0.073 | $0.147 | — |
| NVIDIA Nemotron 3 Ultra 550B | Other | $0.130 | $0.650 | More expensive |
| Trinity Large Thinking (Morpheus Web) | Other | $0.041 | $0.146 | Cheaper |
| Qwen 3 Next 80b | Alibaba | $0.059 | $0.715 | Cheaper |
| GLM 4.5 | Zhipu AI | $0.078 | $0.286 | More expensive |
Frequently Asked Questions
How much does the DeepSeek V4 Pro API cost?
On Qubax, DeepSeek V4 Pro costs $0.073 per 1M input tokens and $0.147 per 1M output tokens. This is 83% cheaper than OpenRouter's price of $0.435 per 1M input tokens.
Is the DeepSeek V4 Pro API compatible with OpenAI?
Yes. Qubax provides an OpenAI-compatible API. You can use DeepSeek V4 Pro as a drop-in replacement by changing your base URL to https://api.qubax.ai/v1 and using your Qubax API key. It works with Cline, Cursor, OpenCode, Hermes Agent, and any tool that supports OpenAI APIs.
Why is DeepSeek V4 Pro cheaper on Qubax than OpenRouter?
Qubax sources AI inference from the Surplus Intelligence marketplace, an open marketplace on the Base blockchain where compute providers compete on price. We pass the savings to you — 83% cheaper than OpenRouter's price for DeepSeek V4 Pro.
How do I pay for DeepSeek V4 Pro API usage?
Qubax uses prepaid crypto credits. Deposit USDC on the Base chain and your balance is automatically deducted as you use the API. New users get $1 in free credits to start. No credit card required.
What is the context window of DeepSeek V4 Pro?
DeepSeek V4 Pro supports a context window of 1M tokens, allowing you to process large documents, codebases, or long conversations in a single request.
What can I build with DeepSeek V4 Pro?
DeepSeek V4 Pro is versatile enough for a wide range of applications. You can use it to tackle complex multi-step reasoning tasks, build autonomous agents that call external tools and APIs, generate structured JSON output for data pipelines, process long documents and entire codebases, and more. Because it's served through Qubax's OpenAI-compatible API, integration into existing apps, agents, or workflows takes just a few lines of code.
How fast is DeepSeek V4 Pro on Qubax?
DeepSeek V4 Pro on Qubax supports streaming responses, so tokens begin arriving in real time as they're generated. Latency depends on the provider and prompt complexity, but most requests start streaming within 200–800 milliseconds. Qubax routes requests through the Surplus Intelligence marketplace, which selects the fastest available compute provider for each request — so you get competitive latency at a lower price.
DeepSeek V4 Pro vs NVIDIA Nemotron 3 Ultra 550B: which should I choose?
DeepSeek V4 Pro by DeepSeek and NVIDIA Nemotron 3 Ultra 550B by Other are both strong models in a similar price tier. DeepSeek V4 Pro excels at complex reasoning. NVIDIA Nemotron 3 Ultra 550B comes from a different lab and may have different strengths depending on your workload. On Qubax, DeepSeek V4 Pro starts at $0.073/1M input tokens versus NVIDIA Nemotron 3 Ultra 550B's $0.130/1M — making DeepSeek V4 Pro the more cost-effective option for high-volume workloads. Both are available on Qubax with crypto payments and OpenAI-compatible APIs, so you can try each and switch freely.
Can I use DeepSeek V4 Pro for commercial projects?
Yes. DeepSeek V4 Pro on Qubax can be used for commercial purposes. You own the outputs you generate. Qubax provides the API infrastructure — you bring your use case.
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