OpenAI
GPT-5.2 Codex (xhigh)
GPT‑5.2-Codex is a version of GPT‑5.2 further optimized for agentic coding in Codex, including improvements on long-horizon work through context compaction, stronger performance on large code changes like refactors and migrations, improved performance in Windows environments, and significantly stronger cybersecurity capabilities.
Introducing GPT-5Model Snapshot
TypeLanguage
ReleaseDec 18, 2025
Context400,000
Tagsreasoning, tool-use, implicit-caching, vision
Overall
Rank #23 across 526
49.0
Coding
Rank #43 across 436
43.0
Blended Price
Rank #310 across 357
$4.81/M
Strength Profile
Percentile score by analysis domain.
* Cost is inverted: lower input, output, and blended prices rank higher.
Benchmark Percentiles
Higher bars mean stronger relative placement.
Model Details
Runtime
Output Speed105.3 tok/s
First Token2.19s
Max Output128,000
Pricing
Blended$4.81/M
Input$1.75/M
All Benchmarks
| Metric | Domain | Value | Rank |
|---|---|---|---|
| Artificial Analysis Intelligence Index | overall | 49.0 | #23 |
| Artificial Analysis Coding Index | coding | 43.0 | #43 |
| GPQA | reasoning | 89.9% | #22 |
| Humanity's Last Exam | reasoning | 33.5% | #24 |
| SciCode |