DeepSeek V4 Pro API

DeepSeek V4 Flash and Pro are large language models for chat and reasoning tasks with up to 1M context length. They support both standard and thinking modes, enabling efficient responses or deeper reasoning workflows.
Context
1M tokens
Input
$0.5655 / 1M
Output
$1.131 / 1M
Released
Apr 24, 2026

How to use DeepSeek V4 Pro API

Install any OpenAI-compatible SDK, point it at api.aimlapi.com/v1, and set the model to deepseek/deepseek-v4-pro.
import requests

r = requests.post(
    "https://api.aimlapi.com/v1/chat/completions",
    headers={"Authorization": "Bearer " + AIMLAPI_KEY},
    json={
      "model": "deepseek/deepseek-v4-pro",
      "messages": [
        {
          "role": "user",
          "content": "Hello!"
        }
      ]
    },
)
print(r.json())
const r = await fetch("https://api.aimlapi.com/v1/chat/completions", {
  method: "POST",
  headers: {
    Authorization: `Bearer ${process.env.AIMLAPI_KEY}`,
    "Content-Type": "application/json",
  },
  body: JSON.stringify({
    "model": "deepseek/deepseek-v4-pro",
    "messages": [
      {
        "role": "user",
        "content": "Hello!"
      }
    ]
  }),
});
console.log(await r.json());
curl -X POST https://api.aimlapi.com/v1/chat/completions \
  -H "Authorization: Bearer $AIMLAPI_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model":"deepseek/deepseek-v4-pro","messages":[{"role":"user","content":"Hello!"}]}'

OpenAI-compatible — swap the base URL and it works with your existing SDK.

DeepSeek V4 Pro API Pricing

TypePrice
Input
$0.5655 / 1M tokens
Output
$1.131 / 1M tokens

DeepSeek V4 Pro Benchmarks

BenchmarkScoreWhat it measures
Terminal-Bench
67.9%
Autonomous shell/terminal task completion
LiveCodeBench
93.5%
Contamination-free competitive programming problems
GPQA Diamond
90.1%
Google-proof graduate science questions (hardest subset)
SWE-bench Verified
80.6%
Resolving verified real GitHub issues

DeepSeek V4 Pro vs other models

ModelInputOutputContextBest for
$0.5655 / 1M
$1.131 / 1M
1M tokens
Reasoning + agents
$6.5 / 1M
$39 / 1M
1.05M tokens
Reasoning + agents
$2.6 / 1M
$13 / 1M
1M tokens
Balanced coding + agents
$3.9 / 1M
$19.5 / 1M
1M tokens
Long-context, multimodal & agentic workflows
$0.65 / 1M
$3.9 / 1M
1.05M tokens
Reasoning + agents

Start building with DeepSeek V4 Pro

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