GPT-5.4 Pro
ProprietaryMultimodal
About
OpenAI's maximum reasoning variant in the GPT-5.4 tier. Context window: 1.05M tokens. Achieves 90.5% on GPQA Diamond and 91.1% on SWE-Bench Pro. Knowledge cutoff: August 2025. Premium tier for complex reasoning and extended context tasks.
Capabilities
MultimodalFunction CallingTool UseJSON Mode