DeepSeek R1 Zero

DeepSeek chatreasoning Free

API ID: deepseek/deepseek-r1-zero

Input Price
Free
/1M tokens
Output Price
Free
/1M tokens

About DeepSeek R1 Zero

DeepSeek-R1-Zero is a model trained via large-scale reinforcement learning (RL) without supervised fine-tuning (SFT) as a preliminary step. It's 671B parameters in size, with 37B active in an inference pass. It demonstrates remarkable performance on reasoning. With RL, DeepSeek-R1-Zero naturally emerged with numerous powerful and interesting reasoning behaviors. DeepSeek-R1-Zero encounters challenges such as endless repetition, poor readability, and language mixing. See [DeepSeek R1](/deepseek/deepseek-r1) for the SFT model.

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Price Ranking
#6 lowest price among 1240 Chat models โ€” Top 20% cheapest!

Model Specifications

Context Length
164k
Max Output
โ€”
Release Date
2025-03-06
Capabilities
chat reasoning
Input Modalities
text
Output Modalities
text

Best For

  • Complex reasoning, math problems, multi-step logic
  • Conversations, content writing, general assistance

Consider Alternatives For

  • Image understanding (needs vision capability)
  • Simple Q&A (cheaper models available)
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This model is completely free!

No token costs - use it without worrying about API bills.

Estimate Token Usage

DeepSeek Model Lineup

Compare all models from DeepSeek to find the best fit

Model Input Output Context Capabilities
DeepSeek R1 Zero Current Free Free 164k chat reasoning
DeepSeek V3.1 Base Free Free 164k chat
DeepSeek V3.1 Base Free Free 164k chat
DeepSeek Prover V2 Free Free 164k chat
DeepSeek V3 Base Free Free 131k chat
DeepSeek V3 Base Free Free 131k chat

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๐Ÿš€ Quick Start

Get started with DeepSeek R1 Zero API

OpenAI-compatible SDK
from openai import OpenAI

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

response = client.chat.completions.create(
    model="deepseek/deepseek-r1-zero",
    messages=[
        {"role": "user", "content": "Hello!"}
    ]
)
print(response.choices[0].message.content)