Open source focus
Open Source Alternatives to Retell AI
60 open source Agentic AI options similar to Retell AI, 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
Magick AI28Agentic AIOpen source
Ultravox.ai52Agentic AISan Francisco, United States$10.0MOpen source
Auto-GPT56Agentic AI$12.0MOpen source · Self-hostable
M Magical54Artificial IntelligenceSan Francisco, United StatesOpen source
giniX54Generative AITel Aviv, IsraelOpen source
Coqui48Voice AIBerlin, Germany$2.0MOpen source · Self-hostable
Google Cloud AI8AI Foundation & ComputeMountain View, United StatesOpen source
Dust65Agentic AIParis, France$15.0MOpen source
Bland64Voice AISan Francisco, United States$51.0MOpen source
Cartesia64Voice AISan Francisco, United States$191.0MOpen source
Cognigy (NICE)63Voice AgentDüsseldorf, GermanyOpen source
Viktor62Artificial IntelligenceWarsaw, Poland$64.7MOpen source
LangChain61Agentic AISan Francisco, United States$260.0MOpen source
Composio59Agentic AISan Francisco, United States$50.0MOpen source
Agency58Agentic AISan Francisco, United States$20.0MOpen source
KiloClaw54Artificial IntelligenceOpen source · Self-hostable
- AGAgentDesk / BrowserTools54Recruitment Tech$17.0M
Open source
Merge Labs54Agentic AISan Francisco, United States$24.0MOpen source
Relevance AI53Agentic AITel Aviv, Israel$12.0MOpen source
Modal Labs52Agentic AISan Francisco, United States$693.0MOpen source
Arthur51Agentic AISan Francisco, United States$10.0MOpen source
- COCognigy50Voice AgentDüsseldorf, Germany$156.5M
Open source
Taskade46SpaceTechNew York, United States$1.0MOpen source
Saperly43Voice AISan Francisco, United States$2.0MOpen source
Romulous35Agentic AISan Francisco, United StatesOpen source
PromptQL31Artificial IntelligenceSan Francisco, United StatesOpen source · Self-hostable
Regai24Customer ServiceLondon, United KingdomOpen source
Vibranium Dome23AI AgentsOpen source · Self-hostable
Glama20Agentic AIOpen source
- BABabyAGI18Agentic AI
Open source · Self-hostable
Lionwire17Voice AIOpen source
- AGAgent Pilot13Agentic AI
Open source · Self-hostable
GPT Researcher13Agentic AIOpen source
evo.ninja12Agentic AIOpen source
- syonix.ai11Agentic AIפרדסיה, Israel
Open source
Mirrorfly11Agentic AIOpen source
kuafuai8Agentic AIBeijing, ChinaOpen source
StranahanAgentic AIOpen source
GoconduitAgentic AISan Francisco, United StatesOpen source
NzeruAgentic AISan Francisco, United StatesOpen source
GetpointVoice AITel Aviv, IsraelOpen source
AixeedAgentic AITel Aviv, IsraelOpen source
MarioagentAgentic AITel Aviv, IsraelOpen source
IbodycamVoice AIOpen source
GetmunimGovTechTel Aviv, IsraelOpen source
OlyzaAgentic AISan Francisco, United StatesOpen source
- CallrichVoice AI
Open source
JanuslabAgentic AISan Francisco, United StatesOpen source
Open and AsyncAgentic AISan Francisco, United StatesOpen source
Bloomberg L.P.82FintechNew York, United States$60.1BOpen source
Lovable75No-Code/Low-CodeStockholm, Sweden$880.2MOpen source
Manus AI75Agentic AISingapore, Singapore$150.0MOpen source
NemoClaw75Artificial IntelligenceOpen source · Self-hostable
Perplexity AI71Search EngineSan Francisco, United States$591.4MOpen source
- MOMoonshot AI66Frontier AI LabBeijing, China$250.0M
Open source
Vapi65Voice AISan Francisco, United States$74.3MOpen source
H2O.ai64Foundation ModelMountain View, United States$228.1MOpen source · Self-hostable
Sarvam AI63Agentic AIBengaluru, India$234.0MOpen source
Trigger Device Inc63AI AgentsLondon, United Kingdom$16.5MOpen source · Self-hostable
| Company | Sector | License | HQ | Funding | Score |
|---|---|---|---|---|---|
| Deepgram | Neocloud | Open source | San Francisco, United States | $177.1M | 65 |
| Magick AI | Agentic AI | Open source | — | — | 28 |
| Ultravox.ai | Agentic AI | Open source | San Francisco, United States | $10.0M | 52 |
| Auto-GPT | Agentic AI | Open source · Self-hostable | — | $12.0M | 56 |
| M Magical | Artificial Intelligence | Open source | San Francisco, United States | — | 54 |
| giniX | Generative AI | Open source | Tel Aviv, Israel | — | 54 |
| Coqui | Voice AI | Open source · Self-hostable | Berlin, Germany | $2.0M | 48 |
| Google Cloud AI | AI Foundation & Compute | Open source | Mountain View, United States | — | 8 |
| Dust | Agentic AI | Open source | Paris, France | $15.0M | 65 |
| Bland | Voice AI | Open source | San Francisco, United States | $51.0M | 64 |
| Cartesia | Voice AI | Open source | San Francisco, United States | $191.0M | 64 |
| Cognigy (NICE) | Voice Agent | Open source | Düsseldorf, Germany | — | 63 |
| Viktor | Artificial Intelligence | Open source | Warsaw, Poland | $64.7M | 62 |
| LangChain | Agentic AI | Open source | San Francisco, United States | $260.0M | 61 |
| Composio | Agentic AI | Open source | San Francisco, United States | $50.0M | 59 |
| Agency | Agentic AI | Open source | San Francisco, United States | $20.0M | 58 |
| KiloClaw | Artificial Intelligence | Open source · Self-hostable | — | — | 54 |
| AGAgentDesk / BrowserTools | Recruitment Tech | Open source | — | $17.0M | 54 |
| Merge Labs | Agentic AI | Open source | San Francisco, United States | $24.0M | 54 |
| Relevance AI | Agentic AI | Open source | Tel Aviv, Israel | $12.0M | 53 |
| Modal Labs | Agentic AI | Open source | San Francisco, United States | $693.0M | 52 |
| Arthur | Agentic AI | Open source | San Francisco, United States | $10.0M | 51 |
| COCognigy | Voice Agent | Open source | Düsseldorf, Germany | $156.5M | 50 |
| Taskade | SpaceTech | Open source | New York, United States | $1.0M | 46 |
| Saperly | Voice AI | Open source | San Francisco, United States | $2.0M | 43 |
| Romulous | Agentic AI | Open source | San Francisco, United States | — | 35 |
| PromptQL | Artificial Intelligence | Open source · Self-hostable | San Francisco, United States | — | 31 |
| Regai | Customer Service | Open source | London, United Kingdom | — | 24 |
| Vibranium Dome | AI Agents | Open source · Self-hostable | — | — | 23 |
| Glama | Agentic AI | Open source | — | — | 20 |
| BABabyAGI | Agentic AI | Open source · Self-hostable | — | — | 18 |
| Lionwire | Voice AI | Open source | — | — | 17 |
| AGAgent Pilot | Agentic AI | Open source · Self-hostable | — | — | 13 |
| GPT Researcher | Agentic AI | Open source | — | — | 13 |
| evo.ninja | Agentic AI | Open source | — | — | 12 |
| Agentic AI | Open source | פרדסיה, Israel | — | 11 | |
| Mirrorfly | Agentic AI | Open source | — | — | 11 |
| kuafuai | Agentic AI | Open source | Beijing, China | — | 8 |
| Stranahan | Agentic AI | Open source | — | — | — |
| Goconduit | Agentic AI | Open source | San Francisco, United States | — | — |
| Nzeru | Agentic AI | Open source | San Francisco, United States | — | — |
| Getpoint | Voice AI | Open source | Tel Aviv, Israel | — | — |
| Aixeed | Agentic AI | Open source | Tel Aviv, Israel | — | — |
| Marioagent | Agentic AI | Open source | Tel Aviv, Israel | — | — |
| Ibodycam | Voice AI | Open source | — | — | — |
| Getmunim | GovTech | Open source | Tel Aviv, Israel | — | — |
| Olyza | Agentic AI | Open source | San Francisco, United States | — | — |
| Voice AI | Open source | — | — | — | |
| Januslab | Agentic AI | Open source | San Francisco, United States | — | — |
| Open and Async | Agentic AI | Open source | San Francisco, United States | — | — |
| Bloomberg L.P. | Fintech | Open source | New York, United States | $60.1B | 82 |
| Lovable | No-Code/Low-Code | Open source | Stockholm, Sweden | $880.2M | 75 |
| Manus AI | Agentic AI | Open source | Singapore, Singapore | $150.0M | 75 |
| NemoClaw | Artificial Intelligence | Open source · Self-hostable | — | — | 75 |
| Perplexity AI | Search Engine | Open source | San Francisco, United States | $591.4M | 71 |
| MOMoonshot AI | Frontier AI Lab | Open source | Beijing, China | $250.0M | 66 |
| Vapi | Voice AI | Open source | San Francisco, United States | $74.3M | 65 |
| H2O.ai | Foundation Model | Open source · Self-hostable | Mountain View, United States | $228.1M | 64 |
| Sarvam AI | Agentic AI | Open source | Bengaluru, India | $234.0M | 63 |
| Trigger Device Inc | AI Agents | Open source · Self-hostable | London, United Kingdom | $16.5M | 63 |