GPT-5.4 (2026-03-05)
JSON →A dated snapshot of GPT-5.4, providing a stable version for reproducibility and testing.
Specs
context window 1.1M tokens
max output 128K tokens
input price $2.5 / 1M tokens
output price $15 / 1M tokens
Capabilities
tool-usejson-modestreamingreasoningcode-generationfunction-callingvisionprompt-caching
Dates
releasedMar 2026
knowledge cutoffDec 2025
Resources
API
full doc /v1/models/gpt-5.4-2026-03-05