DeepSeek
DeepSeek V4 Pro 0813
DeepSeek’s largest V4 model for reasoning, coding and agent work, in its general availability release of August 2026.
- Context window
- 1M tokens
- Accepts
- Text
- Input per 1M tokens
- $2.00
- Output per 1M tokens
- $4.00
Send your first request
Set LYCEUM_API_KEY to your API key, then run this request. Usage is billed to your account.
- Base URL
https://api.lyceum.technology/openai/v1- Model ID
deepseek/deepseek-v4-pro-0813- Request fields
model, messages, stream, max_tokens, tools, tool_choice
Documented request fields for this endpoint. See the documentation for model-specific controls and limits.
app.py · Install openai and set LYCEUM_API_KEY
import os
from openai import OpenAI
client = OpenAI(
api_key=os.environ["LYCEUM_API_KEY"],
base_url="https://api.lyceum.technology/openai/v1",
)
response = client.chat.completions.create(
model="deepseek/deepseek-v4-pro-0813",
messages=[{"role": "user", "content": "Hello!"}],
)
print(response.choices[0].message.content)app.ts · Install openai and set LYCEUM_API_KEY in Node.js
import OpenAI from "openai";
const client = new OpenAI({
apiKey: process.env.LYCEUM_API_KEY,
baseURL: "https://api.lyceum.technology/openai/v1",
});
const response = await client.chat.completions.create({
model: "deepseek/deepseek-v4-pro-0813",
messages: [{ role: "user", content: "Hello!" }],
});
console.log(response.choices[0]?.message.content);Terminal · Set LYCEUM_API_KEY in your terminal
curl https://api.lyceum.technology/openai/v1/chat/completions \
-H "Authorization: Bearer $LYCEUM_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "deepseek/deepseek-v4-pro-0813",
"messages": [
{"role": "user", "content": "Hello!"}
]
}'What it costs
You pay only for the tokens you use.
Token pricing
| USD per million tokens | |
|---|---|
| Input | $2.00 |
| Cached input | $0.50 |
| Output | $4.00 |
No base fee. Caching applies only where listed. Check the model's processing region before sending data.
The model in detail
Checked against the sources below. Anything they don't state is left out.
Capabilities
- Input and output
- Text in, text out
- Context window
- 1M tokens
- Reasoning
- Off by default
- Tool calling
- Supported
Architecture and licence
- Total parameters
- 1.6T
- Active parameters
- 49B
- Architecture
- Mixture of experts
- Licence
- MIT
- Released
- 13 August 2026
Availability
- API model ID
deepseek/deepseek-v4-pro-0813- Provider
- DeepSeek
- Processing region
- EU-hosted
- Input and output types: official model card, checked 10 September 2026.
- Capabilities and request fields: Lyceum API documentation, checked 9 September 2026.
- Parameters, licence and release date: DeepSeek’s own sources, including its model card and announcement, checked 29 September 2026.
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