OpenAI Blog
Aug 3
How we built a realtime system for responsive voice AI in six months
GPT-Live enables continuous voice interaction with AI, using a turnless speech model and low-latency architecture for faster, more natural conversations.
Customizable, no-code voice agent automation with GPT-4o
Retell AI is transforming the call center with AI voice automation powered by GPT-4o and GPT-4. 1.
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Introducing gpt-realtime and Realtime API updates
We’re releasing a more advanced speech-to-speech model and new API capabilities including MCP server support, image input, and SIP phone calling support.
OpenAI Blog
Jul 8
Introducing GPT-Live
A new generation of voice models for natural human-AI interaction, now powering ChatGPT Voice.
OpenAI Blog
Jul 1, 2025
No-code personal agents, powered by GPT-4.1 and Realtime API
Learn how Genspark built a $36M ARR AI product in 45 days—with no-code agents powered by GPT-4. 1 and OpenAI Realtime API.
OpenAI Blog
Oct 11, 2023
Building AI-powered apps for business
Retool uses GPT-4 to give businesses a fast, secure way to build AI-powered apps.
OpenAI Blog
May 7
Advancing voice intelligence with new models in the API
Explore new realtime voice models in the OpenAI API that can reason, translate, and transcribe speech, enabling more natural and intelligent voice experiences.
OpenAI Blog
Jan 7
How Tolan builds voice-first AI with GPT-5.1
Tolan built a voice-first AI companion with GPT-5. 1, combining low-latency responses, real-time context reconstruction, and memory-driven personalities for natural conversations.
OpenAI Blog
Mar 25, 2021
GPT-3 powers the next generation of apps
Over 300 applications are delivering GPT-3–powered search, conversation, text completion, and other advanced AI features through our API.
OpenAI Blog
Oct 1, 2024
Creating agent and human collaboration with GPT 4o
Altera uses GPT-4o to build a new area of human collaboration
OpenAI Blog
Mar 20, 2025
Introducing next-generation audio models in the API
For the first time, developers can also instruct the text-to-speech model to speak in a specific way—for example, “talk like a sympathetic customer service agent”—unlocking a new level of customization for voice agents.
OpenAI Blog
Dec 11, 2025
Introducing GPT-5.2
GPT-5. 2 is our most advanced frontier model for everyday professional work, with state-of-the-art reasoning, long-context understanding, coding, and vision.
OpenAI Blog
Apr 10
Using custom GPTs
Learn how to build and use custom GPTs to automate workflows, maintain consistent outputs, and create purpose-built AI assistants.