DeepSeek V4.1 Flash API

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DeepSeek V4.1 Flash

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Endpoint support

DeepSeek V4.1 Flash capabilities on Geodd

These values describe Geodd's published endpoint capabilities, not capabilities inherited from the base model. An unreported feature is marked Not verified, not assumed unsupported. Independent test results are not supplied by the catalog.

Streaming

Not verified

Tool calling

Not verified

Structured outputs

Not verified

Reasoning

Not verified

OpenAI-compatible chat completions

Yes

JSON responses

Not verified

Batch API

Not verified

Fine-tuning

Not verified

Dedicated deployment

Not verified

Catalog precision: fp8. Maximum output: 384K tokens.

From model ID to request

Use DeepSeek V4.1 Flash with the OpenAI SDK

Install the SDK with npm install openai or pip install openai. Set GEODD_API_KEY in your server environment or secret manager. Never put it in browser code or a public environment variable.

import OpenAI from "openai";

const client = new OpenAI({
  apiKey: process.env.GEODD_API_KEY,
  baseURL: "https://api.geodd.io/inference/v1",
});

const response = await client.chat.completions.create({
  model: "deepseek/deepseek-v4.1-flash",
  messages: [
    { role: "user", content: "Explain speculative decoding." }
  ],
});

console.log(response.choices[0].message.content);

import os
from openai import OpenAI

client = OpenAI(
    api_key=os.environ["GEODD_API_KEY"],
    base_url="https://api.geodd.io/inference/v1",
)

response = client.chat.completions.create(
    model="deepseek/deepseek-v4.1-flash",
    messages=[
        {"role": "user", "content": "Explain speculative decoding."}
    ],
)

print(response.choices[0].message.content)

curl --fail-with-body "https://api.geodd.io/inference/v1/chat/completions" \
  --header "Authorization: Bearer $GEODD_API_KEY" \
  --header "Content-Type: application/json" \
  --data '{
    "model": "deepseek/deepseek-v4.1-flash",
    "messages": [
      { "role": "user", "content": "Explain speculative decoding." }
    ]
  }'

All examples use deepseek/deepseek-v4.1-flash. To select another available region, replace baseURL, base_url, or the cURL URL with its base URL below. A real request consumes billable usage.

Usage-based billing / USD

DeepSeek V4.1 Flash pricing

Serverless billing unit

Per token; prices shown per 1 million tokens

Per-request fee

No per-request fee listed ($0)

Reasoning-token billing

Not specified by the model catalog

Additional platform fees

Not specified by the model catalog

Minimum spend

Not specified by the model catalog

Cache rates are catalog fields; a zero rate does not establish that caching is available. Cache support and reasoning-token accounting have not been verified. Confirm unlisted billing conditions before production use.

Model-specific availability

Available regions

Use the selected serving region for inference processing. Residency commitments and administrative or support access remain subject to Geodd's data handling policy and your agreement.

Payloads and operational metadata

Data handling

• A model-specific zero-retention flag is not available in the current catalog. Confirm applicability before sending sensitive data.
• Geodd does not use customer prompts or model outputs to train models.
• Limited operational metadata, such as usage, billing, and security events, may be retained. Zero payload retention does not mean zero metadata.
• Requests use the selected serving region where applicable. API credentials should only be used server-side.

Integrate in your existing stack

Add DeepSeek V4.1 Flash with your coding agent

Using Claude Code, Codex, Cursor, Windsurf, or another terminal-based coding agent? Give it the prompt below to configure Geodd in your application.

Planned authorization workflow

The intended CLI flow is to authenticate with Geodd, create or select a project, select an inference region, create a scoped credential, safely configure the environment, detect the project's language and framework, install the appropriate SDK, and test an actual request.

The goal is human approval only for authentication, billing authorization, and spending limits, without manually copying credentials when an authorization flow is available. This is a planned workflow, not a currently available feature.

Add DeepSeek V4.1 Flash to this application using Geodd.

Use model: deepseek/deepseek-v4.1-flash
Use Geodd's OpenAI-compatible API.

Requirements:
- Inspect the existing application first and use its existing integration patterns.
- Keep Geodd credentials server-side and use environment variables.
- Never expose the API credential to browser code, logs, or source control.
- Use GEODD_API_KEY; do not ask me to paste a credential into the conversation.
- Implement streaming where supported and appropriate.
- Preserve conversation history if the application includes chat.
- Add error handling for authentication, rate limits, and upstream failures.
- Install the required SDK using the project's package manager.
- Run a real test request when authorized credentials and billing are available.
- Ask for approval before incurring charges or changing a spending limit.
- If credentials are unavailable, explain the blocker; do not claim the test passed.
- Do not rewrite the application architecture when the existing stack supports this integration.

Geodd API base URL: https://api.geodd.io/inference/v1
Geodd documentation: https://geodd.io/docs/llm-api/getting-started
Model facts: https://geodd.io/models/deepseek/deepseek-v4.1-flash.json

Traceable facts

Model data and sources

This page and its JSON representation use the same backend snapshot. Unknown values remain null in JSON; they are not interpreted as supported or unsupported. The availability date uses the backend's model creation timestamp.

Model name

DeepSeek V4.1 Flash

Model ID

deepseek/deepseek-v4.1-flash

Model developer

deepseek

API provider

Geodd

Last verified (catalog)

September 24, 2026

Page data updated

September 24, 2026

Model released

Not supplied by the Geodd catalog

Available on Geodd since

September 24, 2026

Canonical model page

https://geodd.io/models/deepseek/deepseek-v4.1-flash

Direct answers

Frequently asked questions