DeepSeek V4 Flash and Pro are available. Start with the text API
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DeepSeek API

DeepSeek V4 Pro API Access

DeepSeek V4 Pro text chat and reasoning through a verified dedicated route. Use it through SmarToken with OpenAI-compatible request examples, usage tracking and API-key controls.

Available now

OpenAI-compatible examples
Usage tracking
Budget-limited keys
Developer console

5 min

to first call

USD

token pricing

1M

context window

SSE

streaming

DeepSeek V4 Pro route

OpenAI-compatible model gateway

Available now

Client

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Your App

SDK, backend, agent or workflow.

SmarToken

Unified API Gateway

deepseek-v4-pro

AuthBudgetRoute
SSE stream

Provider

DeepSeek V4 Pro

DeepSeek route via admin pool.

01

Your app

Send a standard Chat Completions request with your SmarToken key.

02

SmarToken gateway

Validate the key, model scope, daily budget and monthly budget.

03

Model route pool

Choose an enabled route by priority and weight. No automatic fallback or cross-provider failover is promised.

04

DeepSeek

Call deepseek-v4-pro, stream the response and record usage.

Response Preview

200 OK
{
  "model": "deepseek-v4-pro",
  "choices": [{
    "message": {
      "role": "assistant",
      "content": "DeepSeek V4 Pro text chat and reasoning through a verified dedicated route."
    }
  }],
  "usage": { "tracked": true, "currency": "USD" }
}

Fast Deployment

Generate a key and run the Playground in minutes.

Global Access

Use one endpoint for configured China-first routes.

Unified Billing

Track USD token usage and wallet debits together.

Easy Migration

Keep OpenAI SDK shape, change baseURL and model.

Developer Friendly

Copy-ready cURL, Python and TypeScript examples.

Model fit

Why use DeepSeek V4 Pro?

A focused page for evaluating this model as an API route, not just reading a catalog row.

Supplier capabilities described here do not mean every feature is supported by this gateway. Current support is text Chat Completions; tools, structured output and multimodal requests are rejected. Review the gateway contract.

research

Use DeepSeek V4 Pro for research through one SmarToken API key.

coding

Use DeepSeek V4 Pro for coding through one SmarToken API key.

document analysis

Use DeepSeek V4 Pro for document analysis through one SmarToken API key.

Route fit

DeepSeek V4 Pro route-fit checks

Treat deepseek-v4-pro as a route to test against a workload, not just a catalog name.

When DeepSeek V4 Pro is a strong fit

DeepSeek V4 Pro is strongest for research, coding. Validate it with real prompts before making it a default route.

When to compare alternatives

If your workload depends more on long context, structured output or lowest cost, compare DeepSeek V4 Pro with neighboring model families.

Pre-production check

Availability depends on the configured upstream route.

Why SmarToken

Why not direct vendor accounts?

Direct accounts can work once region, billing, model IDs and credentials are settled. SmarToken is built for faster overseas evaluation and safer early production.

Unified key

One console key currently reaches DeepSeek V4 Flash and V4 Pro. Other model families are coming soon.

English docs

Model IDs, SDK samples and error semantics are written for overseas teams.

Budget control

Daily, monthly and model-family limits keep experiments predictable.

Route visibility

Usage logs connect model, API key, token estimate, latency and wallet debit.

Code sample

Copy-ready API examples

Open in Playground

curl

curl --fail-with-body -sS "https://thesmartoken.com/v1/chat/completions" \
  -H "Authorization: Bearer $SMTOKEN_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "deepseek-v4-pro",
    "messages": [{"role":"user","content":"Reply with exactly OK."}],
    "max_tokens": 8,
    "thinking": {"type":"disabled"}
  }'

python

import os
from openai import OpenAI

client = OpenAI(api_key=os.environ["SMTOKEN_API_KEY"],
                base_url="https://thesmartoken.com/v1", max_retries=0)
response = client.chat.completions.create(
    model="deepseek-v4-pro",
    messages=[{"role": "user", "content": "Reply with exactly OK."}],
    max_tokens=8,
    extra_body={"thinking": {"type": "disabled"}},
)
print(response.choices[0].message.content)
print(response.usage)

Node.js (JavaScript)

import OpenAI from "openai";

const client = new OpenAI({
  apiKey: process.env.SMTOKEN_API_KEY,
  baseURL: "https://thesmartoken.com/v1", maxRetries: 0,
});
const response = await client.chat.completions.create({
  model: "deepseek-v4-pro",
  messages: [{ role: "user", content: "Reply with exactly OK." }],
  max_tokens: 8,
  thinking: { type: "disabled" },
});
console.log(response.choices[0].message.content);
console.log(response.usage);

Comparison

How DeepSeek V4 Pro compares

Position Chinese model families by context, pricing and workload fit before you lock in a default route.

ModelContextInput / 1MOutput / 1MReasoningCodingBest for
DeepSeek128K$0.50$1.505/55/5Reasoning, coding, research
Kimi256K$0.60$2.504/54/5Long context, agents, research
Qwen128K$1.20$4.804/54/5Multilingual apps, structured output
GLM128K$0.80$3.204/54/5Enterprise tools, business workflows
Doubao128K$0.70$2.803/53/5Consumer chat, content workflows
ERNIE128K$0.90$3.604/53/5Chinese knowledge, enterprise search
Hunyuan128K$0.80$3.204/54/5Enterprise assistants, Tencent Cloud routes
MiniMax128K$0.30$1.204/55/5Coding agents, developer automation
StepFun128K$0.50$2.004/54/5Coding tools, planning agents
Baichuan32K$1.50$1.504/53/5Domain QA, bilingual writing
Spark64K$0.70$2.804/54/5Chinese reasoning, education
SenseNova128K$0.80$3.204/53/5Multimodal enterprise workflows
Pangu32K$1.00$4.004/53/5Industry NLP, private routes
360 Zhinao32K$0.40$1.004/53/5Security assistants, Chinese QA
Yi32K$0.90$0.904/54/5Bilingual writing, structured output
InternLM200K$0.20$0.804/54/5Self-hosted evals, research
LongCat128K$0.40$1.604/54/5Open model evals, multimodal prototypes

How do I call DeepSeek V4 Pro with the OpenAI SDK?

Set baseURL to https://thesmartoken.com/v1 and send model: deepseek-v4-pro.

Use cases

Popular use cases

Start with a clear workload, then compare routes in Playground before moving traffic into production.

research

A practical route for research with visible token usage and spend.

coding

A practical route for coding with visible token usage and spend.

document analysis

A practical route for document analysis with visible token usage and spend.

Migration

From your current AI gateway

The integration path stays familiar: same Chat Completions shape, one new baseURL and a China-first model ID.

Switch path

From OpenAI

Keep the SDK. Change baseURL to SmarToken and switch the model ID.

Switch path

From OpenRouter

Move from broad routing into a focused Chinese-model console with budgets.

Switch path

From Together.ai

Keep Chat Completions while adding China-first model pages and route control.

FAQ

Questions developers ask

Is this API compatible with the OpenAI SDK?

Yes. Use your SmarToken key, set baseURL to https://thesmartoken.com/v1, and pass the model ID shown on this page.

How is billing calculated?

Input and output tokens are priced separately in USD per 1M tokens. Final usage is recorded after the provider returns a response or a stream finishes.

Where do I get an API key?

Create an account, open the console, generate an API key, then copy the cURL, Python or TypeScript example from the Playground.

Can I restrict one key to this model family?

Yes. Console API keys can be limited by allowed model family plus daily and monthly USD budgets.

Start now

Start building with Chinese AI models in minutes

One key for the currently available DeepSeek models. Other model families are coming soon.

Get API Key