OpenAI

GPT-5.2-Codex

by OpenAItext+image->text1 endpoint
Neura Intelligence Index
44.0/ 100
Rank
#221—
Confidence
low
Benchmarks
1(3% coverage)

Overview

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....

Capabilities

Text generation
Image understanding
Tool use / Function calling
Structured output
Extended reasoning
Prompt caching
Long context
Deterministic seed

Modalities

Input
TextImage
Output
Text

Technical Specifications

Context Window
400K tokens
Max Output
128K tokens
Tokenizer
GPT
Uptime (24h)
10000.0%
Country
🇺🇸US
Release Date
January 14, 20269mo

Supported Parameters

include_reasoningmax_completion_tokensreasoningreasoning_effortresponse_formatseedstructured_outputstool_choicetoolsverbosity

Benchmark Performance

coding

BenchmarkScoreSource
SWE-Bench Pro
56.4
verified

Performance Over Time

Pricing

Per 1M tokens
Input$1.75
Output$14.00
Cache read$0.17
Added
January 14, 2026
Last synced 11/6/2026