GPT-5.2-Codex
ModelActiveby OpenAI · family “gpt-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.... (description from the OpenRouter listing)
in: textin: imageout: textReasoningTool useStructured output
Epoch Capabilities Index
Not scored by Epoch AI
Released
14 Jan 2026
Context window
400K tokens
Max output
128K tokens
Input $ / 1M tokens
$1.75
Output $ / 1M tokens
$14.0
Cached input $ / 1M
$0.17
Each benchmark shown separately with its own source
Benchmark results (1)
| Benchmark | Domain | Score | vs best recorded | Setting | Run | Source |
|---|---|---|---|---|---|---|
| Terminal Bench | agents | 66.5% ±3.1 | 79% | agent: Deep Agents | 14 Jan 2026 | External ↗ |
Source: Epoch AI Benchmarking Hub (CC BY 4.0). “External” rows are leaderboard results Epoch collects from third parties. Best reported setting per benchmark is shown.
API list price over time
Price history
$ per 1M tokens
9 observations (OpenRouter listing + Internet Archive snapshots). History accumulates with every ingest run; a single point means no change has been observed yet.
Events
- Model launch9mo agoOpenAI releases GPT-5.2-CodexOpenRouter models API