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GPT Realtime 1.5

JSON →
openai llm
textaudio

An improved version of GPT Realtime with enhanced latency and audio quality for voice applications.

Specs

context window 32K tokens
max output 4K tokens
input price $4 / 1M tokens
output price $16 / 1M tokens

Capabilities

streamingtool-usefunction-calling

Dates

releasedJun 2025
knowledge cutoffMar 2025

Resources

homepageopenai.com/index/realtime-api/ ↗
docsplatform.openai.com/docs/guides/realtime ↗

API

full doc /v1/models/gpt-realtime-1.5