deepseek-v4.1-flash-1017

By DeepSeek

Text only: this model does not read images.

Model name for the APIdeepseek-v4.1-flash-1017

Uptime, last 3 days: 100%; 52 calls counted
Reference price per million output tokens: $2.25; Reference per million tokens: input $0.56, output $2.25, cache reads $0.012, cache writes $0.45

Your chats and training

Used to train and improve the provider’s models.

The company that answers for this model states it may use prompts and replies to improve or train its models. Do not send anything private to it.

Which company answers for a model is not published here, so this says what the policy is, not whose it is. Checked against their terms on Sep 28, 2026.

Model facts

Context length: 1M tokens
Longest reply: 384K tokens
Calls tools: Yes
Knowledge cutoff: May 2025
Released: 17 Oct 2026
Open weights: Yes

Context, reply length, tool calling, knowledge cutoff, release date and open weights come from the models.dev open dataset, read once a day.

Use in chat API docs

Call it through the API

Any OpenAI-compatible client works: use the address in the sample and this model name.

import requests

response = requests.post(
    "https://onomeo.com/v1/chat/completions",
    headers={"Authorization": "Bearer YOUR_API_KEY"},
    json={"model": "deepseek-v4.1-flash-1017", "messages": [
        {"role": "user", "content": "Hello!"}
    ]}
)
print(response.json())

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