No longer available since 26 October 2026
LLMBase Chat focuses on open-weight models. GPT-5.2 Codex (Xhigh) is a proprietary model and has therefore not been available since 26 October 2026.
GPT-5.2 Codex (Xhigh)
Specifications
Benchmarks and key facts remain here for reference.
ProviderOpenai
Context WindowN/A
Release DateDec 11, 2025
ModalitiesText
Frequently Asked Questions
Is GPT-5.2 Codex (Xhigh) available in LLMBase Chat yet?
No. GPT-5.2 Codex (Xhigh) has not been available in LLMBase Chat since 26 October 2026.