GPT-5.2

by OpenAI · GPT 5 family · released Dec 11, 2025
Closed Active

OpenAI's December 2025 flagship upgrade with Instant and Thinking variants, delivering stronger science, math, coding, and long-horizon reasoning that replaced GPT-5.1 as the ChatGPT default.

No pricing recorded for this model yet.

Specifications

Model typeText LLM
ArchitectureUnknown
ParametersNot disclosed
Context window400K tokens
Max output128K tokens
Knowledge cutoffNot disclosed
LicenseProprietary
Modalities Text input Image input Text output
Tags Flagship Reasoning
End of lifeNot disclosed
Last verifiedNot disclosed