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OpenAI: GPT-4.1 Nano: AI model

GPT-4.1 Nano is an OpenAI model. The fastest and cheapest model in the GPT-4.1 series, with a ~1M-token context, with up to 1M-token context. Reachable from inside Iran through Hormouz.

Context window:
1,047,576 tokens
Input:
$0.1/1M tokens
Output:
$0.4/1M tokens
Type:
text, image
  • Vision
  • Tools
  • Streaming
  • Long context

GPT-4.1 Nano is the fastest and cheapest model in the GPT-4.1 series, with a ~1M-token context. GPT-4.1 Nano is built for latency-sensitive, high-volume workloads where cost per token matters most. It supports a context window of up to 1M tokens, with training data through Jun 2024.

GPT-4.1 Nano is served through Hormouz behind an OpenAI-compatible API. It supports tool calling and image (vision) input. Point your base URL at Hormouz and drop in a Hormouz key, and existing OpenAI SDK code runs unchanged.

Pricing is usage-based: $0.1 per million input tokens and $0.4 per million output tokens. Hormouz provides stable access to the model from inside Iran, with no foreign credit card or circumvention tooling required.

For tasks that demand low latency, GPT‑4.1 nano is the fastest and cheapest model in the GPT-4.1 series. It delivers exceptional performance at a small size with its 1 million...

Quickstart

curl https://api.hormouz.net/v1/chat/completions \
  -H "Authorization: Bearer ng-YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "openai/gpt-4.1-nano",
    "messages": [{"role": "user", "content": "Hello!"}]
  }'

Specs

VendorOpenAI
TypeText, Image
Context window1,047,576 tokens
Pricing$0.10/M in · $0.40/M out
APIChat Completions
CapabilitiesStreaming · Vision · Tools

Benchmarks

11.1
Coding Index
Better than 7% of models we compared

Reasoning

GPQA Diamond
Graduate-level scientific reasoning
51.2%
HLE
Humanity's Last Exam
3.8%
IFBench
Instruction-following
32%
AA-LCR
Long-context reasoning
20.3%
CritPt
Research-level physics reasoning
0%
AA Omniscience
Broad factual knowledge accuracy
13.7%
Non-Hallucination
Rate of avoiding fabricated answers
17.4%

Coding

Terminal-Bench Hard
Agentic coding & terminal use
3.8%

Agentic

τ²-Bench
Tool-use agents in dual-control scenarios
17.3%
GDPval
Economically valuable tasks
0%

Source: Artificial Analysis

Design Arena

How Design Arena works ↗
3D
Top 95%
935Elo
Win rate: 46%Avg time: 17.1s
Code
Top 95%
969Elo
Win rate: 47.3%Avg time: 24.2s
Data Viz
Top 97%
899Elo
Win rate: 41.1%Avg time: 17.7s
Game Dev
Top 90%
983Elo
Win rate: 49.6%Avg time: 21.7s
UI Component
Top 94%
923Elo
Win rate: 43.9%Avg time: 19.9s
Website
Top 91%
979Elo
Win rate: 48.1%Avg time: 27.3s

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/gpt-4.1-nano",
    "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/gpt-4.1-nano",
    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/gpt-4.1-nano",
  messages: [{ role: "user", content: "Hello!" }],
});
console.log(response.choices[0].message.content);

Buy the OpenAI: GPT-4.1 Nano API, paid in rial

  • Buy credit with an Iranian bank card; no foreign card or account needed.
  • One Hormouz key reaches OpenAI: GPT-4.1 Nano 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

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FAQ

How much does GPT-4.1 Nano cost?
Billing is usage-based: $0.1 per million input tokens and $0.4 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 GPT-4.1 Nano from inside Iran?
Create an account on Hormouz and generate an API key. Hormouz provides a stable path to GPT-4.1 Nano from inside Iran, with no foreign credit card or circumvention tooling required.
Is GPT-4.1 Nano 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 GPT-4.1 Nano have?
GPT-4.1 Nano supports a context window of up to 1M tokens. It also supports tool calling and image (vision) input. That makes it a good fit for long documents, codebases and multi-turn conversations.
What is GPT-4.1 Nano good for?
GPT-4.1 Nano suits high-volume, latency-sensitive tasks: classification, extraction, routing, summarization and simple chat where cost per request matters.
What is GPT-4.1 Nano's knowledge cutoff?
GPT-4.1 Nano'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