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Models / OpenAI

GPT-5.2 Codex (xhigh)

GPT-5.2 Codex · Released 2025-12-11

AA Intelligence Index 40.1. 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.

#54 of 168 on AA Index · current snapshot
41 AA Index · 9 benchmark rows · 1 sourcesPosition is benchmark-specific — not a cross-family or cross-source ranking.
Composite59
Context128K
Input / 1M$1.8
Output / 1M$14
Knowledge cutoffopen
Statussolid

Family profile

Best published score in each covered benchmark family.

65/100 avg
Reasoning
90
Coding
55
Agentic
37
Long context
79

4 tested benchmark families

Benchmark placements

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.

BenchmarkFamilyRankScoreSourceDate
AA-LCRLong context#11/ 17979Artificial Analysis2026-09-01
IFBenchReasoning#13/ 12778Artificial Analysis2026-09-01
SciCodeCoding#15/ 18055Artificial Analysis2026-09-01
GPQA DiamondReasoning#43/ 18590Artificial Analysis2026-09-01
Humanity's Last ExamReasoning#49/ 18036Artificial Analysis2026-09-01
Artificial Analysis Intelligence IndexReasoning#65/ 18741Artificial Analysis2026-09-01
Terminal-BenchAgentic#125/ 18437Artificial Analysis2026-09-01
AA time to first tokenPerformance#133/ 186Artificial Analysis2026-09-01
AA output speedPerformance#134/ 187Artificial Analysis2026-09-01
Family context

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
  1. 1
    Claude Mythos Preview
    95
  2. 2
    Gemini 3.7 Flash
    95
  3. 3
    Grok 4.6
    95
CodingGPT-5.2 Codex (xhigh) · 55
  1. 1
    GPT 5.5
    96
  2. 2
    Claude Opus 4.8
    96
  3. 3
    Claude Opus 4.6
    96
AgenticGPT-5.2 Codex (xhigh) · 37
  1. 1
    GPT 5.5
    100
  2. 2
    Claude Opus 4.8
    100
  3. 3
    Claude Fable 5
    100
Long contextGPT-5.2 Codex (xhigh) · 79
  1. 1
    Muse Spark 1.2
    83
  2. 2
    Kimi K3
    83
  3. 3
    Gemini 3.5 Flash
    81
Newest receipts

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.

9 recent
BenchmarkFamilyScoreSourceDays ago
AA-LCRLong context79.33%Artificial Analysis5
AA output speedPerformance0 t/sArtificial Analysis5
AA time to first tokenPerformance0.00sArtificial Analysis5
Artificial Analysis Intelligence IndexReasoning41.2%Artificial Analysis5
GPQA DiamondReasoning89.9%Artificial Analysis5
Humanity's Last ExamReasoning35.7%Artificial Analysis5
IFBenchReasoning77.62%Artificial Analysis5
SciCodeCoding54.6%Artificial Analysis5
Terminal-BenchAgentic37.12%Artificial Analysis5
Family coverage

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.

Reasoning90
Coding55
Agentic37
Long context79
Price vs. performance
0255075100$0.10$0.30$1$3$10$30input USD / 1M tokens · log scale →← intelligence

Hover any dot for name, score, and input price. Keyboard: tab through the top twelve, or use the ranking below.

AnthropicOpenAIMistralAlibabaDeepSeekGoogleMoonshotMetaMiniMaxxAIZhipuXiaomiOtherMeituanCohereNVIDIA

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.

9 sourced rows

9 of 37 catalog benchmarks have a sourced row for GPT-5.2 Codex (xhigh).

Reasoning

Coding

Agentic

Long context

Performance

Sources