DeepSeek: R1 0528: AI model
DeepSeek R1 0528 is the update to the open-source DeepSeek R1 reasoning model, improving reasoning and answer quality while keeping 671B parameters (37B active), via Hormouz.
- Context window:
- 163,840 tokens
- Input:
- $0.5/1M tokens
- Output:
- $2.15/1M tokens
- Type:
- text
- Tools
- Streaming
- Long context
Thinking levels: Always thinks
DeepSeek R1 0528 is the updated version of DeepSeek R1, with improved reasoning, accuracy and answer quality. Like the original, it is built with 671 billion parameters (37 billion active per pass) and open reasoning tokens, and it is available open-source.
This release advances especially on hard reasoning, math and coding tasks, and it fits problems that call for step-by-step thinking. Its context window is wide and works for long documents and long reasoning chains.
Pricing is usage-based: $0.70/M in · $2.50/M out. Hormouz provides stable access to the model from inside Iran, with no foreign credit card or circumvention tooling required.
May 28th update to the original DeepSeek R1 Performance on par with OpenAI o1, but open-sourced and with fully open reasoning tokens. It's 671B parameters in size, with 37B active...
Quickstart
curl https://api.hormouz.net/v1/chat/completions \
-H "Authorization: Bearer ng-YOUR_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "deepseek/deepseek-r1-0528",
"messages": [{"role": "user", "content": "Hello!"}]
}'Specs
| Vendor | DeepSeek |
|---|---|
| Type | Text |
| Context window | 163,840 tokens |
| Pricing | $0.50/M in · $2.15/M out |
| API | Chat Completions |
| Capabilities | Streaming · Tools |
Benchmarks
Reasoning
Coding
Agentic
Source: Artificial Analysis
Design Arena
How Design Arena works ↗Metrics sourced from Design Arena
Code example
curl https://api.hormouz.net/v1/chat/completions \
-H "Authorization: Bearer ng-YOUR_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "deepseek/deepseek-r1-0528",
"messages": [{"role": "user", "content": "Hello!"}]
}'from openai import OpenAI
client = OpenAI(api_key="ng-YOUR_API_KEY", base_url="https://api.hormouz.net/v1")
response = client.chat.completions.create(
model="deepseek/deepseek-r1-0528",
messages=[{"role": "user", "content": "Hello!"}],
)
print(response.choices[0].message.content)import OpenAI from "openai";
const client = new OpenAI({ apiKey: "ng-YOUR_API_KEY", baseURL: "https://api.hormouz.net/v1" });
const response = await client.chat.completions.create({
model: "deepseek/deepseek-r1-0528",
messages: [{ role: "user", content: "Hello!" }],
});
console.log(response.choices[0].message.content);Buy the DeepSeek: R1 0528 API, paid in rial
- Buy credit with an Iranian bank card; no foreign card or account needed.
- One Hormouz key reaches DeepSeek: R1 0528 and 600+ other models, and you pay only for what you use.
- No VPN and no risk of a banned account; just change the base URL to api.hormouz.net/v1.
Use via Hormouz
Connect to this model and 600+ others with one API key, then see usage down to each request.
Request company accessFAQ
- How much does this model cost?
- Billing is usage-based: $0.70 per million input tokens and $2.50 per million output tokens. There is no fixed monthly fee. You pay only for what you use.
- How is DeepSeek R1 0528 different from DeepSeek R1?
- R1 0528 is the updated version of R1 with improved reasoning, accuracy and answer quality, while keeping the same open-source architecture with open reasoning tokens.
- What is DeepSeek R1 0528 good for?
- Complex reasoning problems, mathematics, coding and tasks that benefit from step-by-step thinking.
- How do I access this model from inside Iran?
- Create an account on Hormouz and generate an API key. Hormouz provides a stable path to the model from inside Iran, with no foreign credit card required.
- Is this model compatible with OpenAI code?
- Yes. Hormouz exposes an OpenAI-compatible API. Just change the base URL to Hormouz and swap in your Hormouz key, and your existing SDKs run without a rewrite.
Updated 2026-10-13