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GPT Realtime 1.5

By OpenAI
gpt-realtime-1.5 is a high-performance real-time model designed for low-latency conversational speech experiences over the Realtime API, supporting function calling and a 32,000 token context window with up to 4,096 output tokens, and it accepts text, audio, and image as inputs while producing text and audio as outputs.
New Multimodal Gen 3
Released: February 23, 2026

Overview

gpt-realtime-1.5 is OpenAI’s flagship real-time voice model for audio-in, audio-out use cases like voice agents and customer support, with support for text, audio, and image inputs and text and audio outputs.

About OpenAI

OpenAI is a technology company that specializes in artificial intelligence research and innovation.

Industry: Artificial Intelligence
Company Size: 5000-5500
Location: San Francisco, California, US
Website: openai.com
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Last updated: February 26, 2026
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