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OpenAI: o3: AI model

o3 is an OpenAI model. A well-rounded reasoning model strong across math, science, coding and visual reasoning, with up to 200K-token context. Reachable from inside Iran through Hormouz.

Context window:
200,000 tokens
Input:
$2/1M tokens
Output:
$8/1M tokens
Type:
text, image
  • Vision
  • Tools
  • Streaming
  • Long context

Thinking levels:

o3 is a well-rounded reasoning model strong across math, science, coding and visual reasoning. o3 is a well-rounded, powerful reasoning model that sets a high bar for math, science, coding and visual reasoning. It also excels at technical writing and instruction following, and can think through multi-step problems that span text, code and images. It supports a context window of up to 200K tokens, with training data through Jun 2024.

o3 is served through Hormouz behind an OpenAI-compatible API. It supports tool calling, image (vision) input and step-by-step reasoning. Point your base URL at Hormouz and drop in a Hormouz key, and existing OpenAI SDK code runs unchanged.

Pricing is usage-based: $2 per million input tokens and $8 per million output tokens. Hormouz provides stable access to the model from inside Iran, with no foreign credit card or circumvention tooling required.

o3 is a well-rounded and powerful model across domains. It sets a new standard for math, science, coding, and visual reasoning tasks. It also excels at technical writing and instruction-following....

Quickstart

curl https://api.hormouz.net/v1/chat/completions \
  -H "Authorization: Bearer ng-YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "openai/o3",
    "messages": [{"role": "user", "content": "Hello!"}]
  }'

Specs

VendorOpenAI
TypeText, Image
Context window200,000 tokens
Pricing$2.00/M in · $8.00/M out
APIChat Completions
CapabilitiesStreaming · Vision · Tools

Benchmarks

Reasoning

GPQA Diamond
Graduate-level scientific reasoning
82.7%
HLE
Humanity's Last Exam
20.1%
IFBench
Instruction-following
71.4%
AA-LCR
Long-context reasoning
74.7%
CritPt
Research-level physics reasoning
1.1%
AA Omniscience
Broad factual knowledge accuracy
38.6%
Non-Hallucination
Rate of avoiding fabricated answers
11.9%

Coding

Terminal-Bench Hard
Agentic coding & terminal use
37.1%

Agentic

τ²-Bench
Tool-use agents in dual-control scenarios
80.7%

Source: Artificial Analysis

Design Arena

How Design Arena works ↗
Code
Top 87%
1,026Elo
Win rate: 51.9%Avg time: 52.2s
Data Viz
Top 43%
1,200Elo
Win rate: 48.1%Avg time: 46.8s
Game Dev
Top 83%
1,047Elo
Win rate: 56.9%Avg time: 53.7s
UI Component
Top 86%
1,023Elo
Win rate: 53.3%Avg time: 51.5s
Website
Top 85%
1,043Elo
Win rate: 53.8%Avg time: 53.0s

Metrics sourced from Design Arena

Code example

cURL
curl https://api.hormouz.net/v1/chat/completions \
  -H "Authorization: Bearer ng-YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "openai/o3",
    "messages": [{"role": "user", "content": "Hello!"}]
  }'
Python
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="openai/o3",
    messages=[{"role": "user", "content": "Hello!"}],
)
print(response.choices[0].message.content)
JavaScript
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: "openai/o3",
  messages: [{ role: "user", content: "Hello!" }],
});
console.log(response.choices[0].message.content);

Buy the OpenAI: o3 API, paid in rial

  • Buy credit with an Iranian bank card; no foreign card or account needed.
  • One Hormouz key reaches OpenAI: o3 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.
Create an accountBuy ChatGPT (OpenAI) API access, paid in rial

Use via Hormouz

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FAQ

How much does o3 cost?
Billing is usage-based: $2 per million input tokens and $8 per million output tokens. There is no fixed monthly fee. You pay only for what you use, and current rates are shown in the Hormouz dashboard.
How do I access o3 from inside Iran?
Create an account on Hormouz and generate an API key. Hormouz provides a stable path to o3 from inside Iran, with no foreign credit card or circumvention tooling required.
Is o3 compatible with OpenAI code?
Yes. Hormouz exposes an OpenAI-compatible API. Just change the base URL to Hormouz and swap in your Hormouz key. Your existing SDKs and chat-completions code run without a rewrite.
What context window and capabilities does o3 have?
o3 supports a context window of up to 200K tokens. It also supports tool calling, image (vision) input and step-by-step reasoning. That makes it a good fit for multi-step analysis across text, code and images, technical writing and demanding STEM reasoning.
What is o3 good for?
o3 works well for multi-step analysis across text, code and images, technical writing and demanding STEM reasoning.
What is o3's knowledge cutoff?
o3's training data runs through Jun 2024. For information newer than that, provide the relevant context in your prompt or connect a tool that fetches live data.

Updated 2026-10-13