Open source focus
Open Source Alternatives to Kalpa Labs
60 open source Voice Agent options similar to Kalpa Labs, ranked by named competitors first, sector overlap, and our 0-100 AI-readiness score. Each profile notes license and self-hosting where we have it.
Deepgram65NeocloudSan Francisco, United States$177.1MOpen source
ElevenLabs79AILondon, United Kingdom$1.6BOpen source
Google Cloud Text-to-SpeechVoice AIMountain View, United StatesOpen source
Vapi65Voice AISan Francisco, United States$74.3MOpen source
Bland64Voice AISan Francisco, United States$51.0MOpen source
Cognigy (NICE)63Voice AgentDüsseldorf, GermanyOpen source
- COCognigy50Voice AgentDüsseldorf, Germany$156.5M
Open source
Coqui48Voice AIBerlin, Germany$2.0MOpen source · Self-hostable
Saperly43Voice AISan Francisco, United States$2.0MOpen source
Lionwire17Voice AIOpen source
Modelglass12AI InfrastructureSydney, AustraliaOpen source
Mirrorfly11Agentic AIChennai, IndiaOpen source
SynchumanVoice AITel Aviv, IsraelOpen source
GetpointVoice AITel Aviv, IsraelOpen source
CallrichVoice AIOpen source
IbodycamVoice AIOpen source
OpenAI84Artificial IntelligenceSan Francisco, United States$493.9BOpen source
SpaceXAI76Frontier AI LabPalo Alto, United States$90.0BOpen source
Cartesia64Voice AISan Francisco, United States$191.0MOpen source
Sendbird61Conversational AISan Mateo, United StatesOpen source
Vocode50Open SourceSan Francisco, United States$3.8MOpen source · Self-hostable
Cekura40Agentic AITel Aviv, IsraelOpen source
Symbl.ai36Voice AISan Francisco, United States$6.4MOpen source
Metadialogues15Conversational AIOpen source
Kyutai69Frontier AI LabParis, France$300.0MOpen source · Self-hostable
Nomi55AI CopilotSan Francisco, United States$180.0MOpen source
Meaning55Artificial IntelligenceTel Aviv, IsraelOpen source
Resemble AI55Voice AINew York, United States$36.5MOpen source
Ultravox.ai52Agentic AISan Francisco, United States$10.0MOpen source
- BLBlip41Voice AISão Paulo, Brazil$10.0M
Open source
Tryagentically40Agentic AISan Francisco, United StatesOpen source
Magick AI28Agentic AIOpen source
- Anyvoice20Voice AI
Open source
Jako.ai20EnterpriseTel Aviv, IsraelOpen source
Zenthic15Conversational AISan Francisco, United StatesOpen source
evo.ninja12Agentic AIOpen source
Convo10Voice AISan Francisco, United StatesOpen source
IntervyouAI AgentOpen source
- FunbuttonVoice AI
Open source
RevanipulseAgentic AIOpen source
LingseeVoice AITel Aviv, IsraelOpen source
RevochatConversational AIOpen source
DhvanixVoice AIBengaluru, IndiaOpen source
GoumiFoundation ModelBeaverton, United StatesOpen source
Together AI76AI InfrastructureSan Francisco, United States$906.0MOpen source · Self-hostable
NemoClaw75Artificial IntelligenceOpen source · Self-hostable
DeepSeek AI70AI InfrastructureBeijing, China$15.8BOpen source
OpenRouter70InfrastructureSan Francisco, United States$153.5MOpen source
Pinecone69AI InfrastructureSan Francisco, United States$138.0MOpen source
- MOMoonshot AI68Frontier AI LabBeijing, China$3.9B
Open source
Daytona66AI InfrastructureNew York, United States$46.0MOpen source
Arize AI65AI ObservabilityBerkeley, United StatesOpen source
Genesys Cloud CX64Contact Center AIDaly City, United States$3.9BOpen source
Weights & Biases (W&B)63MLOpsSan Francisco, United States$521.0MOpen source
RadixArk62Artificial IntelligencePalo Alto, USA$20.0MOpen source
fal AI61Generative AISan Francisco, United States$20.0MOpen source
LangChain61Agentic AISan Francisco, United States$260.0MOpen source
Replicate60AI InfrastructureSan Francisco, United StatesOpen source
Weaviate60Vector DatabaseAmsterdam, NetherlandsOpen source
Modular58AI InfrastructureSan Francisco, United States$380.0MOpen source
| Company | Sector | License | HQ | Funding | Score | Website |
|---|---|---|---|---|---|---|
| Deepgram | Neocloud | Open source | San Francisco, United States | $177.1M | 65 | |
| ElevenLabs | AI | Open source | London, United Kingdom | $1.6B | 79 | |
| Google Cloud Text-to-Speech | Voice AI | Open source | Mountain View, United States | — | — | |
| Vapi | Voice AI | Open source | San Francisco, United States | $74.3M | 65 | |
| Bland | Voice AI | Open source | San Francisco, United States | $51.0M | 64 | |
| Cognigy (NICE) | Voice Agent | Open source | Düsseldorf, Germany | — | 63 | |
| COCognigy | Voice Agent | Open source | Düsseldorf, Germany | $156.5M | 50 | |
| Coqui | Voice AI | Open source · Self-hostable | Berlin, Germany | $2.0M | 48 | |
| Saperly | Voice AI | Open source | San Francisco, United States | $2.0M | 43 | |
| Lionwire | Voice AI | Open source | — | — | 17 | |
| Modelglass | AI Infrastructure | Open source | Sydney, Australia | — | 12 | |
| Mirrorfly | Agentic AI | Open source | Chennai, India | — | 11 | |
| Synchuman | Voice AI | Open source | Tel Aviv, Israel | — | — | |
| Getpoint | Voice AI | Open source | Tel Aviv, Israel | — | — | |
| Callrich | Voice AI | Open source | — | — | — | |
| Ibodycam | Voice AI | Open source | — | — | — | |
| OpenAI | Artificial Intelligence | Open source | San Francisco, United States | $493.9B | 84 | |
| SpaceXAI | Frontier AI Lab | Open source | Palo Alto, United States | $90.0B | 76 | |
| Cartesia | Voice AI | Open source | San Francisco, United States | $191.0M | 64 | |
| Sendbird | Conversational AI | Open source | San Mateo, United States | — | 61 | |
| Vocode | Open Source | Open source · Self-hostable | San Francisco, United States | $3.8M | 50 | |
| Cekura | Agentic AI | Open source | Tel Aviv, Israel | — | 40 | |
| Symbl.ai | Voice AI | Open source | San Francisco, United States | $6.4M | 36 | |
| Metadialogues | Conversational AI | Open source | — | — | 15 | |
| Kyutai | Frontier AI Lab | Open source · Self-hostable | Paris, France | $300.0M | 69 | |
| Nomi | AI Copilot | Open source | San Francisco, United States | $180.0M | 55 | |
| Meaning | Artificial Intelligence | Open source | Tel Aviv, Israel | — | 55 | |
| Resemble AI | Voice AI | Open source | New York, United States | $36.5M | 55 | |
| Ultravox.ai | Agentic AI | Open source | San Francisco, United States | $10.0M | 52 | |
| BLBlip | Voice AI | Open source | São Paulo, Brazil | $10.0M | 41 | |
| Tryagentically | Agentic AI | Open source | San Francisco, United States | — | 40 | |
| Magick AI | Agentic AI | Open source | — | — | 28 | |
| Voice AI | Open source | — | — | 20 | ||
| Jako.ai | Enterprise | Open source | Tel Aviv, Israel | — | 20 | |
| Zenthic | Conversational AI | Open source | San Francisco, United States | — | 15 | |
| evo.ninja | Agentic AI | Open source | — | — | 12 | |
| Convo | Voice AI | Open source | San Francisco, United States | — | 10 | |
| Intervyou | AI Agent | Open source | — | — | — | |
| Voice AI | Open source | — | — | — | ||
| Revanipulse | Agentic AI | Open source | — | — | — | |
| Lingsee | Voice AI | Open source | Tel Aviv, Israel | — | — | |
| Revochat | Conversational AI | Open source | — | — | — | |
| Dhvanix | Voice AI | Open source | Bengaluru, India | — | — | |
| Goumi | Foundation Model | Open source | Beaverton, United States | — | — | |
| Together AI | AI Infrastructure | Open source · Self-hostable | San Francisco, United States | $906.0M | 76 | |
| NemoClaw | Artificial Intelligence | Open source · Self-hostable | — | — | 75 | |
| DeepSeek AI | AI Infrastructure | Open source | Beijing, China | $15.8B | 70 | |
| OpenRouter | Infrastructure | Open source | San Francisco, United States | $153.5M | 70 | |
| Pinecone | AI Infrastructure | Open source | San Francisco, United States | $138.0M | 69 | |
| MOMoonshot AI | Frontier AI Lab | Open source | Beijing, China | $3.9B | 68 | |
| Daytona | AI Infrastructure | Open source | New York, United States | $46.0M | 66 | |
| Arize AI | AI Observability | Open source | Berkeley, United States | — | 65 | |
| Genesys Cloud CX | Contact Center AI | Open source | Daly City, United States | $3.9B | 64 | |
| Weights & Biases (W&B) | MLOps | Open source | San Francisco, United States | $521.0M | 63 | |
| RadixArk | Artificial Intelligence | Open source | Palo Alto, USA | $20.0M | 62 | |
| fal AI | Generative AI | Open source | San Francisco, United States | $20.0M | 61 | |
| LangChain | Agentic AI | Open source | San Francisco, United States | $260.0M | 61 | |
| Replicate | AI Infrastructure | Open source | San Francisco, United States | — | 60 | |
| Weaviate | Vector Database | Open source | Amsterdam, Netherlands | — | 60 | |
| Modular | AI Infrastructure | Open source | San Francisco, United States | $380.0M | 58 |