GPT-5.1 Pro
DeprecatedProprietary
About
Deprecated GPT-5.1 Pro variant. Retired from ChatGPT March 11, 2026.
Capabilities
MultimodalFunction CallingTool UseJSON Mode
Specifications
ArchitectureDecoder Only
Specializationgeneral
LicenseProprietary
Deprecated GPT-5.1 Pro variant. Retired from ChatGPT March 11, 2026.