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Description

GPT-Realtime-2.1 is an OpenAI realtime model designed for advanced voice-agent and speech-to-speech AI applications. It improves on GPT-Realtime-2 with stronger alphanumeric recognition, better silence and noise handling, and more natural interruption behavior. The model supports text, audio, and image inputs, while producing text and audio outputs for interactive realtime experiences. Developers can use GPT-Realtime-2.1 across endpoints such as Chat Completions, Responses, Realtime, realtime translation, realtime transcription sessions, and related OpenAI API workflows. The model supports function calling, configurable reasoning effort, instruction following, and reasoning token support for complex voice-agent tasks. Its 128,000-token context window and 32,000-token maximum output make it suitable for longer conversations and more detailed realtime workflows. GPT-Realtime-2.1 does not support video, structured outputs, fine-tuning, or predicted outputs according to OpenAI’s current documentation. Pricing starts at $4 per 1 million text input tokens and $24 per 1 million text output tokens, with separate pricing for audio and image tokens. By combining realtime audio interaction, reasoning, tool use, and multimodal input, GPT-Realtime-2.1 helps developers build responsive AI agents for support, sales, operations, translation, transcription, and interactive voice applications.

Description

Velma is an innovative AI model created by Modulate, functioning as part of a comprehensive voice intelligence system that comprehends conversations directly from audio rather than depending on textual transcriptions. In contrast to conventional methods that first convert spoken language to text for analysis through language models, Velma employs an Ensemble Listening Model (ELM), which features a unique architecture capable of processing various facets of voice simultaneously, such as tone, emotion, pacing, intent, and behavioral cues. This advanced capability enables it to grasp the complete essence of a dialogue, not merely the spoken words, while identifying subtle indicators like stress, deceit, sarcasm, or escalation as they occur. Velma achieves this by integrating hundreds of specialized detectors, each targeting specific elements of speech, such as emotional context, inappropriate behavior, or signs of synthetic voice, and subsequently amalgamating these signals to derive deeper insights about the dynamics of the conversation. Consequently, this allows for a richer understanding of interactions in real time, enhancing the potential for more effective communication analysis.

API Access

Has API

API Access

Has API

Screenshots View All

Screenshots View All

Integrations

Five9
GENESYS
Microsoft Teams
OpenAI
Slack
Zendesk
Zoom
gpt-realtime

Integrations

Five9
GENESYS
Microsoft Teams
OpenAI
Slack
Zendesk
Zoom
gpt-realtime

Pricing Details

$0.40 per cached input
Free Trial
Free Version

Pricing Details

$0.25 per hour
Free Trial
Free Version

Deployment

Web-Based
On-Premises
iPhone App
iPad App
Android App
Windows
Mac
Linux
Chromebook

Deployment

Web-Based
On-Premises
iPhone App
iPad App
Android App
Windows
Mac
Linux
Chromebook

Customer Support

Business Hours
Live Rep (24/7)
Online Support

Customer Support

Business Hours
Live Rep (24/7)
Online Support

Types of Training

Training Docs
Webinars
Live Training (Online)
In Person

Types of Training

Training Docs
Webinars
Live Training (Online)
In Person

Vendor Details

Company Name

OpenAI

Founded

2015

Country

United States

Website

developers.openai.com/api/docs/models/gpt-realtime-2.1

Vendor Details

Company Name

Modulate

Founded

2019

Country

United States

Website

www.modulate.ai/velma

Product Features

Product Features

Alternatives

Alternatives