GPT-3.5 Turbo is OpenAI's fastest model. It can understand and generate natural language or code, and is optimized for chat and traditional completion tasks.
Training data up to Sep 2021.
Uptime stats for GPT-3.5 Turbo (older v0613)
Uptime stats for GPT-3.5 Turbo (older v0613) across all providers
OpenAI: GPT-3.5 Turbo (older v0613) – Uptime and Availability