GPT-5.2-Codex
openai/gpt-5.2-codex
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.
Key facts
- Input price
- $1.75 / 1M tokens
- Output price
- $14.00 / 1M tokens
- Context window
- 400K tokens
- Max output
- 128K tokens
- Accepts
- Text, Images
- Returns
- Text
Example: 1,000 requests with 1,000 input and 500 output tokens each would cost about $8.75 (1M input tokens × $1.75 + 0.5M output tokens × $14.00). Estimate your own usage.
Prices are the provider’s own per-token rates with zero markup, from our price list as of Oct 18, 2026. If a call has extra provider charges (images, audio, web search, cached prompts), you pay the reported cost.
Call it from your code
curl https://api.tokenctr.com/v1/chat/completions \
-H "Authorization: Bearer $TOKENCENTER_API_KEY" \
-H "Content-Type: application/json" \
-d '{"model": "openai/gpt-5.2-codex", "messages": [{"role": "user", "content": "Hello!"}]}'Works with any OpenAI-compatible SDK: set the base URL to https://api.tokenctr.com/v1. Quickstart
Benchmarks
Artificial Analysis
- Intelligence index
- 28.5
Design Arena
| Category | Rank | Elo | Win rate |
|---|---|---|---|
| Agents: Android native | 20 | 1176 | 47.5% |
| Agents: Godot game dev | 24 | 1142 | 47.8% |
| Agents: Web apps | 39 | 1044 | 39.6% |
| Agents: Mobile apps | 40 | 1087 | 46.6% |
| Agents: Full-stack | 41 | 993 | 37.2% |
Source: Artificial Analysis indexes and Design Arena results as published in OpenRouter’s model data, fetched Oct 15, 2026. Higher is better. Not measured by TokenCenter. See all rankings.