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OpenAI: GPT-5.2-Codex: AI model

GPT-5.2 Codex is an OpenAI model, an upgraded GPT-5.2 variant for software engineering and coding workflows, with up to 400K-token context. Reachable from inside Iran through Hormouz.

Context window:
400,000 tokens
Input:
$1.75/1M tokens
Output:
$14/1M tokens
Type:
text, image
  • Vision
  • Tools
  • Streaming
  • Long context

Thinking levels: Always thinks · xhigh · high · medium · low

GPT-5.2 Codex is an upgraded GPT-5.2 variant for software engineering and coding workflows. GPT-5.2 Codex upgrades GPT-5.1 Codex for interactive development and long, independent execution of complex engineering tasks. It supports a context window of up to 400K tokens, with training data through Sep 2024.

GPT-5.2 Codex 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: $1.75 per million input tokens and $14 per million output tokens. Hormouz provides stable access to the model from inside Iran, with no foreign credit card or circumvention tooling required.

GPT-5.2-Codex is an upgraded version of GPT-5.1-Codex optimized for software engineering and coding workflows. It is designed for both interactive development sessions and long, independent execution of complex engineering tasks....

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-5.2-codex",
    "messages": [{"role": "user", "content": "Hello!"}]
  }'

Specs

VendorOpenAI
TypeText, Image
Context window400,000 tokens
Pricing$1.75/M in · $14.00/M out
APIChat Completions
CapabilitiesStreaming · Vision · Tools

Benchmarks

Reasoning

GPQA Diamond
Graduate-level scientific reasoning
89.9%
HLE
Humanity's Last Exam
35.7%
IFBench
Instruction-following
77.6%
AA-LCR
Long-context reasoning
82.3%
CritPt
Research-level physics reasoning
8.7%
AA Omniscience
Broad factual knowledge accuracy
41.1%
Non-Hallucination
Rate of avoiding fabricated answers
26.6%

Coding

Terminal-Bench Hard
Agentic coding & terminal use
37.1%

Agentic

τ²-Bench
Tool-use agents in dual-control scenarios
92.1%

Source: Artificial Analysis

Design Arena

How Design Arena works ↗

Ranking distribution

First
6,073
Second
7,410
Third
0
Fourth
0

7057 tournaments ?

Android Native
Top 54%
1,176Elo
Win rate: 47.5%
Full-Stack
Top 95%
991Elo
Win rate: 37.2%
Godot Game Dev
Top 67%
1,142Elo
Win rate: 47.8%
Mobile Apps
Top 89%
1,087Elo
Win rate: 46.6%
Web Apps
Top 93%
1,043Elo
Win rate: 39.6%

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-5.2-codex",
    "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-5.2-codex",
    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-5.2-codex",
  messages: [{ role: "user", content: "Hello!" }],
});
console.log(response.choices[0].message.content);

Buy the OpenAI: GPT-5.2-Codex API, paid in rial

  • Buy credit with an Iranian bank card; no foreign card or account needed.
  • One Hormouz key reaches OpenAI: GPT-5.2-Codex 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-5.2 Codex cost?
Billing is usage-based: $1.75 per million input tokens and $14 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-5.2 Codex from inside Iran?
Create an account on Hormouz and generate an API key. Hormouz provides a stable path to GPT-5.2 Codex from inside Iran, with no foreign credit card or circumvention tooling required.
Is GPT-5.2 Codex 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-5.2 Codex have?
GPT-5.2 Codex supports a context window of up to 400K tokens. It also supports tool calling, image (vision) input and step-by-step reasoning. That makes it a good fit for long documents, codebases and multi-turn conversations.
What is GPT-5.2 Codex good for?
GPT-5.2 Codex is purpose-built for coding and software engineering. Writing and refactoring code, agentic development runs, debugging and working across large codebases.
What is GPT-5.2 Codex's knowledge cutoff?
GPT-5.2 Codex's training data runs through Sep 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