LLM Reference

GPT-5.2

ProprietaryMultimodal

About

OpenAI's December 2025 flagship model release in the GPT-5 family. 400K token context window. Knowledge cutoff: August 2025. Improved reasoning and instruction following over earlier GPT-5 variants.

Capabilities

MultimodalFunction CallingTool UseJSON Mode

Specifications

FamilyGPT-5
Released2025-12-01
Context400K
ArchitectureDecoder Only
Knowledge cutoff2025-08
Specializationgeneral
LicenseProprietary