What Open Voice Interoperability Initiative does

The Open Voice Interoperability Initiative is a non-profit open-source standards body operating under the Linux Foundation AI & Data Foundation, developing the Open Floor Protocol (OFP), a set of platform-independent specifications that enable conversational assistants built on any technology to discover, communicate with, and delegate tasks to one another. Its core technical deliverables are three specifications: the Conversation Envelope (a universal JSON message structure), Dialog Events (a standardized natural-language interchange format), and the Assistant Manifest (a capability-discovery descriptor analogous to a CV for conversational agents). These are implemented in the Open Voice Sandbox, an open-source web-based system in Python and JavaScript that includes sample assistants built on LLMs and on more traditional technologies, supporting both voice and text input. Version 1.0 of the Open-Floor specification, published May 27, 2025, added multi-agent collaboration support through a Conversational Floor metaphor, enabling orchestrated use cases such as travel planning and patient care.

The initiative follows a community-led go-to-market model with no direct revenue generation: specifications, implementations, and documentation are distributed freely through GitHub repositories (github.com/open-voice-interoperability) and the project website (voiceinteroperability.ai), and organizational support flows through the Linux Foundation's nonprofit structure. Target beneficiaries span enterprise organizations seeking to unify siloed departmental assistants, educational institutions managing multiple student-services bots, government agencies providing cross-departmental citizen services (a use case demonstrated with the Government of Estonia), conversational AI developers building standards-compliant agents, and end users seeking seamless transitions between personal and service-provider assistants. Marketing and adoption efforts rely on academic publications (arxiv), YouTube content, conference presentations (AAAI, Grace Hopper Celebration, Open Source Summit Europe), online workshops, and an independent developer site (openfloor.dev). The initiative traces its lineage to 2017-2018 MIT-Intel-Capgemini research, was founded as the Open Voice Network in 2020, and joined the Linux Foundation AI & Data Foundation as a project in November 2023.

Name

Open Voice Interoperability Initiative

Legal name

Open Voice Interoperability

Website

https://voiceinteroperability.ai

Company type

Private

Founded year

2020

Operating status

Operating

Headcount range

11–50 employees

Short description

The Open Voice Interoperability Initiative is a non-profit standards body under the Linux Foundation AI & Data Foundation that develops the Open Floor Protocol, enabling conversational assistants built on any technology to interoperate, discover capabilities, and collaborate through open specifications and a Python/JavaScript sandbox.

Ownership category

akta.pro rank

Product category

Conversational AI Standards

NAICS

Custom Computer Programming Services (541511), Computer Systems Design and Related Services (54151)

SIC

Services-Prepackaged Software (7372), Services-Computer Programming Services (7371)

akta.pro primary industry

Conversational NLP & Dialogue Management (chatbots, agents) (HDAAADAF)

Keywords

• Conversational AI standards
• Voice interoperability
• Multi-agent protocol
• Open-source AI specifications
• Assistant communication framework

GTM type

B2B

Offering type

Software

Cost components

Personnel, Technology or R&D, Operations, Marketing or Sales

Revenue model

1. Standards Development (Non-Profit): The Open Voice Interoperability Initiative is a non-profit open-source standards initiative hosted under the Linux Foundation AI & Data Foundation. It does not generate revenue through product sales. The initiative's work is freely available as open-source specifications and implementations. Funding and support come through Linux Foundation membership and organizational sponsorship rather than direct revenue generation.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels7 records

Core offering

The Open Voice Interoperability Initiative develops and publishes the Open Floor Protocol (OFP), a set of open, platform-independent message specifications that enable conversational assistants built on any technology to discover, communicate with, and collaborate with other agents. The product is delivered as three core specifications (Conversation Envelope, Dialog Events, Assistant Manifest) plus the open-source Open Voice Sandbox reference implementation in Python and JavaScript, all freely available on GitHub.

Product overview

The Open Voice Interoperability Initiative is a standards body that defines interoperability specifications for conversational AI. Its core offerings include the Open Floor Protocol (OFP) as the overarching standard, supported by three technical specifications: the Conversational Envelope (universal JSON message structure), Dialog Events (natural language interchange format), and Assistant Manifest (capability discovery). These are implemented in the Open Voice Sandbox, an open source Python/JavaScript system for testing and developing interoperable assistants. The ecosystem is completed by developer resources including GitHub repositories, vocabulary documentation, and papers on multi-agent collaboration.

Differentiator

Problem solved

Functional benefit

Products and services

• Open Floor Protocol (OFP) Open, platform-independent message specification enabling intelligent conversational agents to locate other assistants with specific skills, delegate user requests, and transition between assistants across frameworks and ecosystems. Includes the Open-Floor Inter-Agent Message Standard for multi-agent collaboration.
• Conversational Envelope Specification Universal JSON structure that allows human or automatic agents to interoperably participate in a conversation; coupled with HTTPS, any OVON-compliant agent can interoperate regardless of underlying technology or architecture.
• Dialog Events Specification Generic standardized data structure for expressing language events in any component of a dialog system; Dialog Events span a defined time period and are associated with a single speaker.
• Assistant Manifest Specification Structured description of a conversational assistant's key characteristics and capabilities, associated with a unique serviceEndpoint; functions as a CV for agents to enable discovery and invitation to conversations.
• Open Voice Sandbox Open-source web-based Python and JavaScript implementation of the Open Voice Interoperability specifications, including interoperable sample assistants (some based on LLMs and others on traditional technologies) supporting both voice and text input.

Quantifiable outcome

• Multi-agent orchestration for complex tasks like travel planning or patient care
• +2 more outcomes

Segments5 records

Ideal customer profiles4 records

Technology focussed Yes

API detail

Has API

Yes

API docs

API detail

Core technology

AI maturity

App detail

AI capability6 records

Feature5 records

Partnerships

One partnership is on record.

• Government of EstoniacoreStrategic or Co-development PartnerImplemented a use case demonstrating interoperable conversational assistants for government citizen services. The collaboration shows how citizens can be directed to appropriate government assistants regardless of department or whether the assistant belongs to government or non-government organizations. Demonstrated in a YouTube video showing practical implementation of the interoperability standards.

Scale indicators3 records

Recent moves9 records

Expansion highlights2 records

Direct peers

• Rasa: Rasa is an open-source conversational AI framework that provides infrastructure for building assistants. Like OVON, it operates in the open-source conversational AI space focused on interoperability and developer extensibility, though Rasa is a commercial entity while OVON is a non-profit standards body.
• Botpress: Botpress is an open-source conversational AI platform that enables developers to build and deploy chatbots and voice assistants. It shares OVON's open-source ethos and developer-focused approach to the conversational AI ecosystem.

Broad incumbents

• Microsoft Bot Framework: Microsoft Bot Framework is an enterprise conversational AI development platform. It is a broad incumbent in the same space as OVON, with overlapping capabilities for building multi-channel conversational experiences for enterprises.
• Cognigy: Cognigy is an enterprise conversational and agentic AI platform used for customer service automation. It overlaps with OVON's target enterprise use cases for multi-agent collaboration and cross-departmental assistance scenarios.
• LivePerson: LivePerson is a conversational AI platform that enables enterprise customer engagement through messaging and voice assistants. It targets similar enterprise customer experience use cases that OVON's inter-agent protocols aim to enable.
• Kore.ai: Kore.ai is an enterprise conversational AI platform offering AI agents for customer service, employee engagement, and search. It addresses the same enterprise use cases OVON targets (enterprise assistants across departments) but as a commercial platform rather than an open standard.
• Google Dialogflow: Google Dialogflow is a major proprietary conversational AI platform that competes in the same space as OVON's target use cases. However, it is a closed Google ecosystem rather than an open standard, making it an incumbent competitor that OVON's standards work aims to interoperate with or displace.
• Amazon Lex: Amazon Lex is AWS's conversational AI service for building chatbots and voice assistants. It serves similar enterprise use cases as OVON targets but is a proprietary platform, making it a relevant incumbent whose customers could benefit from OVON interoperability.

Emerging players

• LangChain: LangChain is an emerging open-source framework for building LLM-powered applications and agents. Its agent orchestration capabilities are an adjacent approach to OVON's inter-agent communication, and the two could either complement or compete depending on future roadmap convergence.

Others

• W3C Voice Browser Working Group: The W3C's Voice Browser Working Group previously developed open standards for voice browser interoperability (VoiceXML, SSML, SRGS). It is the closest historical peer in structure and mission to OVON, as a standards body driving cross-platform voice interoperability, and was led by OVON's current Project Lead Deborah Dahl.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks5 records

Key highlights6 records

Customer concentration

• GitHubgithub.com/open-voice-interoperability
• LinkedInlinkedin.com/company/openvoiceinteroperability

Revenue estimate

Valuation estimate

Number of profiles

Profiles10 records

Funding overview

Funding rounds

Investors

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M&A

Investments

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Frequently asked questions about Open Voice Interoperability Initiative