GPT-5 miniOpenAI
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GPT-Realtime-2.1OpenAI
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Related Products
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About
GPT-5 mini is a streamlined, faster, and more affordable variant of OpenAI’s GPT-5, optimized for well-defined tasks and precise prompts. It supports text and image inputs and delivers high-quality text outputs with a 400,000-token context window and up to 128,000 output tokens. This model excels at rapid response times, making it suitable for applications requiring fast, accurate language understanding without the full overhead of GPT-5. Pricing is cost-effective, with input tokens at $0.25 per million and output tokens at $2 per million, providing savings over the flagship model. GPT-5 mini supports advanced features like streaming, function calling, structured outputs, and fine-tuning, but does not support audio input or image generation. It integrates well with various API endpoints including chat completions, responses, and embeddings, making it versatile for many AI-powered tasks.
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About
GPT-Realtime-2.1 is OpenAI’s reasoning model with tool use for low-latency voice agents and complex speech-to-speech workflows. It updates GPT-Realtime-2 with improved alphanumeric recognition, silence and noise handling, and interruption behavior, helping applications understand spoken code, manage imperfect audio, and respond more naturally when users pause or talk over the agent. Developers can configure reasoning effort to balance deeper thinking against latency and output usage, while strong instruction following helps the model stay aligned with a defined role, tone, and workflow. It accepts and produces both audio and text, can take images as input, and supports function calling so an agent can retrieve information or perform actions during a conversation. The model has a 128,000-token context window, supports up to 32,000 output tokens, and includes reasoning-token support for extended interactions.
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Platforms Supported
Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook
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Platforms Supported
Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook
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Audience
Developers and businesses needing a fast, cost-efficient AI model with strong reasoning capabilities for well-defined tasks and scalable natural language processing applications
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Audience
Developers, AI agent builders, voice AI teams, contact center platforms, customer support teams, product teams, enterprise automation teams, and conversational AI companies that need realtime speech-to-speech interactions, audio input and output, function calling, tool use, configurable reasoning, image input, long-context voice workflows, transcription, translation, and interactive AI assistants
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Support
Phone Support
24/7 Live Support
Online
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Support
Phone Support
24/7 Live Support
Online
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API
Offers API
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API
Offers API
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Screenshots and Videos |
Screenshots and Videos |
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Pricing
$0.25 per 1M tokens
Input: $0.25 per 1M tokens
Output: $2 per 1M tokens
Free Version
Free Trial
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Pricing
$0.40 per cached input
Free Version
Free Trial
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Reviews/
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Reviews/
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Training
Documentation
Webinars
Live Online
In Person
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Training
Documentation
Webinars
Live Online
In Person
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Company InformationOpenAI
Founded: 2015
United States
platform.openai.com/docs/models/gpt-5-mini
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Company InformationOpenAI
Founded: 2015
United States
developers.openai.com/api/docs/models/gpt-realtime-2.1
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Categories |
Categories |
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Integrations
OpenAI
Bash
Brokk
C++
ChatGPT
ChatGPT Enterprise
ChatGPT Plus
ChatGPT Pro
Codex CLI
Editee
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Integrations
OpenAI
Bash
Brokk
C++
ChatGPT
ChatGPT Enterprise
ChatGPT Plus
ChatGPT Pro
Codex CLI
Editee
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