GPT-5.2 Codex specs, prices, where it runs and its benchmark standing

Name: GPT-5.2 Codex
Author: OpenAI

closed weights · top 10 on 1 of 2 · released Dec 11, 2025

Provider: OpenAI
Release date: Dec 11, 2025 · Pricing lists Jan 14, 2026; Boards
Parameters: Not disclosed by OpenAI
Modalities: Text, Image to Text; OpenRouter
License: Proprietary; Boards
Context window: 400K tokens; Pricing
Pricing: $1.75 in / $14 out per 1M tokens; All prices
Hosting: 2 priced API routes · Azure OpenAI (29 regions) · OpenRouter; Pricing Regions
Weights: Closed weights
Benchmarks: 2 boards captured

Rank	Board	Category	Score	Of	Over time
40	LiveBenchReasoning · as “gpt-5.2-codex”	Reasoning	74.0%	64
6	SWE-bench VerifiedCoding · stale since 2026-02-26 · as “GPT 5.2 Codex”	Coding	72.8%	39

Versions and release history

3 versions in this line since Nov 12, 2025, from Pricing, OpenRouter and the boards.

Category ranks, more models and catalog changes