Model specification · OpenAI

GPT-5.2-Codex

openai/gpt-5.2-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....

SpecificationsReported values
Context window
400K
Maximum output
128K
Architecture
text+image->text
Tokenizer
GPT
Knowledge cutoff
—
Moderated
No
Input modalities
textimage
Output modalities
text
Full pricingUSD where reported
PriceStandard
Input$1.75 / M
Output$14.00 / M
Benchmark indexesReported indexes
Intelligence
28.5
Coding
—
Agentic
—
Design Arena Elo
1090
Example workload costsStandard pricing only
WorkloadInput / outputCache shareEstimated cost
Quick check10K / 1K × 10%$0.032
Long analysis100K / 4K × 150%$0.152
Workday20K / 2K × 1,00030%$53.55
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GPT-5.3-Codex400K$1.75$14.0032.5
GPT-5.2400K$1.75$14.0030.4
GPT-5.1400K$1.25$10.0024.7