DeepSeek: DeepSeek V4 Flash (free) — Free AI Model & API

Verified
openrouter/deepseek-deepseek-v4-flash
chat
Get API key →
Context Window 1.0M
Max Output 384K
Rate Limit See provider page
Cost $0.00 FREE
Free Period Since Apr 24, 2026
Credit Card Not required
Status Online

Overview

DeepSeek V4 Flash is a Mixture-of-Experts model with 284B total parameters (13B active per token), available free on OpenRouter. It features a 1M context window with hybrid attention for efficient long-context processing. Supports configurable reasoning effort (high/xhigh levels). Strong performance on coding, reasoning, and agent workflows. Model weights available on Hugging Face. Text-only. OpenAI-compatible via OpenRouter. Free tier: 200 RPD (or 1,000 with $10 lifetime credit).

Model ID
deepseek/deepseek-v4-flash:free
Base URL
https://openrouter.ai/api/v1
Specifications
Context: 1.0M · Output: 384K · Modality: text · OpenAI Compat: Yes ·Released: Apr 24, 2026

Quick Start

Integrate DeepSeek: DeepSeek V4 Flash (free) with 3 lines of code. See the config generator for Claude Code, Cursor, and more.

from openai import OpenAI

client = OpenAI(
 base_url="https://openrouter.ai/api/v1",
 api_key="YOUR_API_KEY"
)

response = client.chat.completions.create(
 model="deepseek/deepseek-v4-flash:free",
 messages=[{"role": "user", "content": "Hello!"}]
)
print(response.choices[0].message.content)
import OpenAI from "openai";

const openai = new OpenAI({
 baseURL: "https://openrouter.ai/api/v1",
 apiKey: "YOUR_API_KEY",
});

const completion = await openai.chat.completions.create({
 model: "deepseek/deepseek-v4-flash:free",
 messages: [{ role: "user", content: "Hello!" }],
});

console.log(completion.choices[0].message.content);
curl https://openrouter.ai/api/v1/chat/completions \
 -H "Content-Type: application/json" \
 -H "Authorization: Bearer YOUR_API_KEY" \
 -d '{
 "model": "deepseek/deepseek-v4-flash:free",
 "messages": [{"role": "user", "content": "Hello!"}]
 }'

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Rate Limits & Constraints

Rate Limit See provider page
Context Window 1.0M
Max Output Tokens 384K
Cost Free — since Apr 24, 2026
Credit Card Not required
OpenAI Compatible Yes — drop-in replacement

OpenRouter Platform Limitations

  • 200 RPD on free tier (1,000 with $10 lifetime credit)
  • Free models may change without notice
  • Some free models have shorter context windows than paid variants

Features & Use Cases

Best For

Chat

Modality Support

text

OpenRouter Highlights

  • 35+ permanently free models
  • OpenAI-compatible endpoint
  • 200 RPD free, 1,000 RPD with $10 lifetime credit
  • One key for 300+ models

Playground — Test DeepSeek: DeepSeek V4 Flash (free)

Test DeepSeek: DeepSeek V4 Flash (free) directly in your browser. Your API key is sent directly to OpenRouter — never stored.

Model: DeepSeek: DeepSeek V4 Flash (free) Get Key

🔒 Your key is never stored — sent directly to the model provider via our server proxy.

Ready to chat with DeepSeek: DeepSeek V4 Flash (free).

Frequently Asked Questions

How do I get an API key for DeepSeek: DeepSeek V4 Flash (free)?

Sign up at OpenRouter to get your API key. No credit card is required — just an email sign-up. Once you have the key, use the code snippets in the Quick Start section above.

Is DeepSeek: DeepSeek V4 Flash (free) really free?

Yes. DeepSeek: DeepSeek V4 Flash (free) is available on OpenRouter's free tier and has been free since Apr 24, 2026. Rate limits apply: See provider page. Always check the provider's terms for any changes to the free tier.

What are DeepSeek: DeepSeek V4 Flash (free)'s rate limits?

See provider page Context window: 1.0M. Max output: 384K. No credit card required.

What are the best free alternatives to DeepSeek: DeepSeek V4 Flash (free)?

Popular free alternatives include inclusionAI: Ring-2.6-1T, Baidu Qianfan: CoBuddy (free), Owl Alpha. You can also browse all 147+ free models on our site.

More questions? See our full FAQ →

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