GPQA DiamondVerified
89.9%
GPQA Diamond (AA run)
Models / OpenAI
GPT-5.2 Codex (xhigh)
GPT-5.2 Codex · Released 2025-12-11
Listed on Artificial Analysis with API pricing $1.75/$14 per 1M tokens. Benchmark rows sync from the AA snapshot — see the ledger on this page.
Frontier model tracked on Artificial Analysis. Use the benchmark ledger below for sourced scores; we do not infer numbers beyond published rows.
Composite61
Context128K
Input / 1M$1.8
Output / 1M$14
Knowledge cutoffopen
Output speed129 t/s
Statussolid
Family profile
Best published score in each covered benchmark family.
70/100 avg
- Reasoning
- 90
- Agentic
- 37
- Long context
- 82
3 tested benchmark families
Benchmark placements
Per-benchmark positions
Where GPT-5.2 Codex (xhigh) places on each public benchmark source that publishes a row. Rank counts every model with a latest row in the same test — not a universal quality score.
| Benchmark | Family | Rank | Score | Source | Date |
|---|---|---|---|---|---|
| AA-LCR | Long context | #19/ 184 | 82 | Artificial Analysis | 2026-09-28 |
| AA output speed | Performance | #38/ 195 | Artificial Analysis | 2026-10-12 | |
| GPQA Diamond | Reasoning | #45/ 184 | 90 | Artificial Analysis | 2026-09-28 |
| Humanity's Last Exam | Reasoning | #58/ 186 | 36 | Artificial Analysis | 2026-09-28 |
| Terminal-Bench | Agentic | #110/ 167 | 37 | Artificial Analysis | 2026-09-28 |
Family context
Strongest rows in each family
The three highest-scoring models with pages in each capability family. Where GPT-5.2 Codex (xhigh) shows up, it's highlighted.
ReasoningGPT-5.2 Codex (xhigh) · 90
- 196
- 295
- 395
Math
- 152
- 252
- 350
AgenticGPT-5.2 Codex (xhigh) · 37
- 191
- 289
- 389
Long contextGPT-5.2 Codex (xhigh) · 82
- 189
- 286
- 385
Newest receipts
5 recentLast 120 days
Benchmark rows added to the public ledger for GPT-5.2 Codex (xhigh) in the last 120 days. Older rows live in the full table below.
| Benchmark | Family | Score | Source | Days ago |
|---|---|---|---|---|
| AA output speed | Performance | 129 t/s | Artificial Analysis | 10 |
| AA-LCR | Long context | 82.33% | Artificial Analysis | 24 |
| GPQA Diamond | Reasoning | 89.9% | Artificial Analysis | 24 |
| Humanity's Last Exam | Reasoning | 35.7% | Artificial Analysis | 24 |
| Terminal-Bench | Agentic | 37.12% | Artificial Analysis | 24 |
Family coverage
Best score per family
A high composite that hides a weak family is a trap. These bars surface the families where this model hasn't been publicly tested, and where it leads.
Price vs. performance
Where GPT-5.2 Codex (xhigh) sits on the scatter
Hover any dot for name, score, and input price. Keyboard: tab through the top twelve, or use the ranking below.
AnthropicOpenAIGoogleAlibabaMetaZhipuxAIDeepSeekMiniMaxXiaomiMoonshotOtherMeituanMistralNVIDIACohere
Full benchmark ledger
Every catalog benchmark for GPT-5.2 Codex (xhigh). Scores link to the original source; gaps mean no public row exists yet.
5 of 13 catalog benchmarks have a sourced row for GPT-5.2 Codex (xhigh).
Reasoning
Humanity's Last ExamVerified
35.7%
HLE (AA run)
Agentic
Terminal-BenchVerified
37.12%
Terminal-Bench Hard (AA run)
Long context
AA-LCRVerified
82.33%
AA-LCR (AA run)
Performance
AA output speedVerified
129 t/s
Median output tokens/s (1k prompt, default provider)
Sources
Where the numbers come from
- Artificial Analysis models index· checked 2026-07-21
Questions this model page answers
Every answer below is assembled from the dated fields on this page. Nothing is written separately for search.
What is GPT-5.2 Codex (xhigh)?
GPT-5.2 Codex (xhigh) is a OpenAI model: Listed on Artificial Analysis with API pricing $1.75/$14 per 1M tokens. Benchmark rows sync from the AA snapshot — see the ledger on this page.
What is GPT-5.2 Codex (xhigh) for?
Frontier model tracked on Artificial Analysis. Use the benchmark ledger below for sourced scores; we do not infer numbers beyond published rows.
What does GPT-5.2 Codex (xhigh) cost?
GPT-5.2 Codex (xhigh) lists $1.8 input and $14 output per 1M tokens. Pricing last checked 2026-07-21.
How large is the GPT-5.2 Codex (xhigh) context window?
GPT-5.2 Codex (xhigh) publishes a 128K token context window.
What is the VerdictPal status of GPT-5.2 Codex (xhigh)?
GPT-5.2 Codex (xhigh) carries Solid status on the model atlas.
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