Models/GPT-5.2 Codex

MDL

GPT-5.2 Codex

OpenAI

Verified against Artificial Analysis · Jul 13, 2026

Capability

percentile index

Price /M

$1.75 / $14

in / out

Context

400K

tokens

Avg score

65.8

7 benchmarks

AA Intelligence

40.1

index

Speed

144 tok/s

TTFT 1.4s

Released

Dec 11, 2025

About

GPT-5.2 Codex is a proprietary model in the GPT family from OpenAI. Benchmarked on 7 evals, averaging 65.8.

Benchmark scores · 7

avg 65.8 — higher is better

τ²-benchartificial-analysis · 2026-07

92.1

GPQA Diamondartificial-analysis · 2026-07

89.9

IFBenchartificial-analysis · 2026-07

77.6

AA Long-Context Reasoningartificial-analysis · 2026-07

75.7

SciCodeartificial-analysis · 2026-07

54.6

Terminal-Bench Hardartificial-analysis · 2026-07

37.1

Humanity's Last Examartificial-analysis · 2026-07

33.5

Details

PublisherOpenAI

FamilyGPT

Parameters—

License—

WeightsClosed

ReleasedDec 11, 2025

Performance & price

Output speed144 tok/s

Latency (TTFT)1.4s

Price in / out$1.75 / $14 per 1M

Blended price$4.81 / 1M

Median across API providers, via Artificial Analysis. Blended = 3:1 input:output. For reasoning models, latency includes thinking time. Methodology →

History

full ledger →

Capability over time

Append-only ledger — every observed change to this model's numbers.

API providers

Artificial Analysis$14/M