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About

GPT-5.1 Instant is a high-performance AI model designed for everyday users that combines speed, responsiveness, and improved conversational warmth. The model uses adaptive reasoning to instantly select how much computation is required for a task, allowing it to deliver fast answers without sacrificing understanding. It emphasizes stronger instruction-following, enabling users to give precise directions and expect consistent compliance. The model also introduces richer personality controls so chat tone can be set to Default, Friendly, Professional, Candid, Quirky, or Efficient, with experiments in deeper voice modulation. Its core value is to make interactions feel more natural and less robotic while preserving high intelligence across writing, coding, analysis, and reasoning. GPT-5.1 Instant routes user requests automatically from the base interface, with the system choosing whether this variant or the deeper “Thinking” model is applied.

About

GPT-Realtime-2 is OpenAI’s voice model for live interactions where the model can keep the conversation moving while it reasons through requests, calls tools, handles corrections or interruptions, and responds in a way that fits the moment. It is built for a new class of voice apps that feel more natural, respond more intelligently, and take action in real time. GPT-Realtime-2 brings GPT-5-class reasoning to voice experiences, helping agents understand what someone means, track context, recover when a request changes, use tools while the conversation continues, and carry the conversation forward naturally. Developers can enable short preambles like “let me check that” so users know the agent is working, and the model can call multiple tools at once while making actions audible with phrases like “checking your calendar” or “looking that up now.” It also has stronger recovery behavior, longer context for agentic workflows, better retention of specialized terminology, etc.

Platforms Supported

Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook

Platforms Supported

Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook

Audience

Everyday professionals and creators searching for a tool that excels at writing, coding, problem solving and instruction-following with human-friendly responses

Audience

Voice AI developers building real-time customer support agents that need natural conversation, tool calling, interruption handling, and stronger reasoning during live calls

Support

Phone Support
24/7 Live Support
Online

Support

Phone Support
24/7 Live Support
Online

API

Offers API

API

Offers API

Screenshots and Videos

Screenshots and Videos

Pricing

No information available.
Free Version
Free Trial

Pricing

$32 per 1M tokens
Free Version
Free Trial

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Training

Documentation
Webinars
Live Online
In Person

Training

Documentation
Webinars
Live Online
In Person

Company Information

OpenAI
Founded: 2015
United States
openai.com/index/gpt-5-1/

Company Information

OpenAI
Founded: 2015
United States
openai.com/index/advancing-voice-intelligence-with-new-models-in-the-api/

Alternatives

Claude Opus 4.1

Claude Opus 4.1

Anthropic

Alternatives

GPT-5.2

GPT-5.2

OpenAI
GPT-5.1

GPT-5.1

OpenAI

Categories

Categories

Integrations

OpenAI
Bash
ChatGPT
ChatGPT Plus
ChatGPT Pro
Codex CLI
Doraverse
Ghost
Google Drive
HTML
JetBrains Junie
Kimi K2 Thinking
Kineto by JetBrains
Kotlin
Microsoft 365 Copilot
Microsoft 365 Copilot Chat
Microsoft SharePoint
React
SQL
ThreadMaster.ai

Integrations

OpenAI
Bash
ChatGPT
ChatGPT Plus
ChatGPT Pro
Codex CLI
Doraverse
Ghost
Google Drive
HTML
JetBrains Junie
Kimi K2 Thinking
Kineto by JetBrains
Kotlin
Microsoft 365 Copilot
Microsoft 365 Copilot Chat
Microsoft SharePoint
React
SQL
ThreadMaster.ai
Claim GPT-5.1 Instant and update features and information
Claim GPT-5.1 Instant and update features and information
Claim GPT-Realtime-2 and update features and information
Claim GPT-Realtime-2 and update features and information