DeepSeek R1
Access DeepSeek R1 through one API key. Reasoning-specialized model for complex problems.
DeepSeek's reasoning-specialized model. Uses chain-of-thought to solve complex math, logic, and coding problems.
No credit card required. Takes 30 seconds.
2,400+
Developers
1.2M+
API calls served
100+
Endpoints
$0.01
Per call
Yep, that's it.
Try it live
Send a message and see DeepSeek R1 respond in real time.
Maximum tokens in the response.
Real-time tokens
Context Window
128K tokens
Max Output
8K tokens
Input Price
$0.77 / 1M tokens
Output Price
$3.07 / 1M tokens
Strengths
R1 generates explicit step-by-step reasoning before answering, trading more output tokens for higher accuracy on hard problems.
Tuned for quantitative and logical problems, working through multi-step derivations rather than guessing a final answer.
Applies its reasoning process to harder programming tasks — algorithm design, debugging, and multi-step implementations.
Suited to puzzles and analytical questions where reasoning quality matters more than latency or cost per token.
Quick start
Copy this snippet and start making calls with DeepSeek R1.
const res = await fetch('https://api.yepapi.com/v1/ai/chat', {
method: 'POST',
headers: {
'x-api-key': 'YOUR_API_KEY',
'Content-Type': 'application/json',
},
body: JSON.stringify({
"model": "deepseek/deepseek-r1",
"messages": [
{
"role": "user",
"content": "Explain API gateways in 2 sentences."
}
],
"maxTokens": 256
}),
});
const { data } = await res.json();
console.log(data.message.content);Why use DeepSeek R1 through YepAPI?
DeepSeek R1 API — pricing, context window & access
DeepSeek R1 is DeepSeek's reasoning-specialized model, using explicit chain-of-thought to tackle hard math, logic, and coding problems. It offers a 128K-token context window and up to 8,192 output tokens per response.
Through YepAPI you call DeepSeek R1 on an OpenAI-compatible endpoint with one key — the same key that also reaches DeepSeek V3, GPT-4o, Claude, Gemini, and the SEO, SERP and scraping endpoints.
What is DeepSeek R1?
DeepSeek R1 is DeepSeek's reasoning-specialized model. Unlike a standard chat model, it's trained to think in explicit chain-of-thought steps before answering, which makes it markedly stronger on problems where the path to the answer matters: math proofs, logic puzzles, and complex multi-step coding. It complements the general-purpose DeepSeek V3 — R1 is the model you reach for when accuracy on a genuinely hard problem outweighs speed or token cost. It keeps a 128K-token context window for holding long problem statements and supporting material.
Build with DeepSeek R1 via YepAPI
YepAPI exposes DeepSeek R1 through the OpenAI-compatible /v1/ai/chat endpoint, so you call it with the chat-completions format and the model string deepseek-r1 — no special SDK. Because reasoning models emit visible thinking, plan for longer outputs. Dropping back to DeepSeek V3 for routine work, or to GPT-4o or Claude, is one string. The same key also covers search and scraping endpoints, so reasoning tools and data pipelines run on a single account.
DeepSeek R1 API pricing — $0.77 / 1M input, $3.07 / 1M output
DeepSeek R1 costs $0.77 per 1M input tokens and $3.07 per 1M output tokens through YepAPI. Reasoning models spend extra output tokens working through their chain of thought, so the higher output rate matters most — but R1 still undercuts most frontier reasoning options. Reserve it for the hard cases where step-by-step accuracy pays off, and route everyday requests to a cheaper model like DeepSeek V3. You pay only for tokens used.
DeepSeek R1 for math, logic & reasoning
R1 is built for problems that need deliberate reasoning rather than a quick reply. On math derivations, logic puzzles, and intricate coding tasks, its explicit chain-of-thought lets it catch errors and follow multi-step plans that a standard model would skip. The visible reasoning is also useful when you want to inspect how it reached an answer. Use R1 as the escalation tier for your hardest analytical and programming questions.
Try DeepSeek R1 free
New YepAPI accounts get $5 in free credit, no card required. That's enough to throw a few genuinely hard math or coding problems at R1 and watch it reason through them. Sign up, grab your key, and start calling DeepSeek R1 in minutes.
Start generating in 30 seconds
$5 free credit on signup. No credit card required. Pay per call.
What developers say
“Switched from SerpAPI and cut our SERP costs by 80%. Same data quality, way simpler billing.”
“One API key for AI models, SERP data, and web scraping. Saved us from managing 4 separate providers.”
“The $5 free credit let us prototype our entire rank tracking feature before committing. No other API does that.”
Frequently asked questions
DeepSeek's reasoning-specialized model. Uses chain-of-thought to solve complex math, logic, and coding problems.
Input tokens cost $0.77 per 1M tokens and output tokens cost $3.07 per 1M tokens through YepAPI. No monthly minimums — you only pay for what you use.
Sign up for a free API key, then send requests to the /v1/ai/chat endpoint.
DeepSeek R1 supports a 128K token context window with up to 8K output tokens per request.
Ready to use DeepSeek R1?
$5 free credit on signup. No credit card required. Pay per call.
Explore more models
DeepSeek V3
DeepSeekAccess DeepSeek V3 through one API key. Frontier-level coding at a fraction of the cost.
DeepSeek V3.2
DeepSeekAccess DeepSeek V3.2 through one API key. Latest DeepSeek model.
DeepSeek V4 Flash
DeepSeekAccess DeepSeek V4 Flash through one API key. 1M context, MoE speed, budget pricing.