
DeepSeek V4.1 Flash
DeepSeek V4.1 Flash is a language model from DeepSeek. It is currently free at 3 providers with up to 1M tokens of context. The model supports step-by-step reasoning, is suited to coding, supports tool calling. Its weights are open, so it can also run locally.
- Developer
- DeepSeek
- Context
- 1M tokens
- Type
- Text
- License
- Open weights
- Free since
- September 21, 2026
Where to use DeepSeek V4.1 Flash for free
Each row is a separate free endpoint with its own limits.
| Provider | Context | Limit | Card | |
|---|---|---|---|---|
OrcaRouter deepseek/deepseek-v4.1-flash-free |
— | Free tier | — | Open |
NVIDIA Build deepseek-ai/deepseek-v4.1-flash |
— | Free serverless inference for development; limits and model availability may change. | No | Open |
OpenCode Zen deepseek-v4.1-flash-free |
— | Free models are available for a limited time; prompts may be used to improve the model. | — | Open |
Quick start
curl https://api.orcarouter.ai/v1/chat/completions \
-H "Authorization: Bearer $ORCAROUTER_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "deepseek/deepseek-v4.1-flash-free",
"messages": [{"role": "user", "content": "Hello!"}]
}'from openai import OpenAI
client = OpenAI(
base_url="https://api.orcarouter.ai/v1",
api_key="YOUR_ORCAROUTER_API_KEY",
)
reply = client.chat.completions.create(
model="deepseek/deepseek-v4.1-flash-free",
messages=[{"role": "user", "content": "Hello!"}],
)
print(reply.choices[0].message.content)import OpenAI from "openai";
const client = new OpenAI({
baseURL: "https://api.orcarouter.ai/v1",
apiKey: process.env.ORCAROUTER_API_KEY,
});
const reply = await client.chat.completions.create({
model: "deepseek/deepseek-v4.1-flash-free",
messages: [{ role: "user", content: "Hello!" }],
});
console.log(reply.choices[0].message.content);Example for OrcaRouter. Any OpenAI-compatible client works: Cursor, Cline, OpenCode, Open WebUI.
Benchmarks
Source: Artificial Analysis · DeepSeek V4.1 Flash (Reasoning, Max Effort)
Similar free models
FAQ
Is DeepSeek V4.1 Flash free?
Yes. As of November 6, 2026, DeepSeek V4.1 Flash is free at OrcaRouter, NVIDIA Build, OpenCode Zen. Each provider has its own limits — see the table above.
What is the context window of DeepSeek V4.1 Flash?
The largest context among free routes is 1,000,000 tokens. Some providers cap it lower.
How do I call DeepSeek V4.1 Flash via API?
Use any OpenAI-compatible client with base URL https://api.orcarouter.ai/v1, model ID deepseek/deepseek-v4.1-flash-free, and a OrcaRouter key.
How good is DeepSeek V4.1 Flash?
Artificial Analysis Intelligence Index: 39.5. For comparison, the strongest free model in the catalog right now is GLM 5.3 Flash.
Is DeepSeek V4.1 Flash open-weight?
Yes, the weights are published — you can download and run it locally, for example with Ollama or LM Studio.