Open source focus
Open Source Alternatives to Claude Fable
60 open source Foundation Model options similar to Claude Fable, 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.
Google73InternetMountain View, United States$9.1BOpen source
OpenAI84Artificial IntelligenceSan Francisco, United States$493.9BOpen source
Chai56AI ChatbotSan Francisco, United States$60.0MOpen source
SpaceXAI76Frontier AI LabPalo Alto, United States$90.0BOpen source
PrivateGPT5AI Search EngineToronto, CanadaOpen source · Self-hostable
RevochatConversational AIOpen source
GoumiFoundation ModelBeaverton, United StatesOpen source
Perplexity AI71Search EngineSan Francisco, United States$591.4MOpen source
- MOMoonshot AI68Frontier AI LabBeijing, China$3.9B
Open source
Lacentral68Frontier AI LabSan Francisco, United States$11.3BOpen source
Chai Research58AI CompanionPalo Alto, United States$55.0MOpen source
CHAI: AI Platform56AI InfrastructurePalo Alto, United States$3.7MOpen source
Outlit45Agentic AI$500KOpen source
Dante45Artificial Intelligence$1.5MOpen source
DeepAI33AI Image GenerationSan Francisco, United StatesOpen source
Andraste32Agentic AISan Francisco, United StatesOpen source
GPT4All26Foundation ModelNew York, United StatesOpen source · Self-hostable
evo.ninja12Agentic AIOpen source
Agentradio7AI Coding AssistantOpen source
TinyFish3Artificial IntelligenceSan Francisco, United StatesOpen source
RedbuyE-commerceOpen source
KedmahConversational AITel Aviv, IsraelOpen source
EazycareHealthTechOpen source
MoriwaConversational AIOpen source
LwaiGenerative AIOpen source
Denser AIAI ChatbotTel Aviv, IsraelOpen source
BiblelensAI Search EngineOpen source
CowpokeAI AgentOpen source
AskhorizonConversational AILondon, United KingdomOpen source
DowjoFoundation ModelOpen source
KaliaiFoundation ModelSan Francisco, United StatesOpen source
Together AI76AI InfrastructureSan Francisco, United States$906.0MOpen source · Self-hostable
Lovable75No-Code/Low-CodeStockholm, Sweden$1.2BOpen source
Arena71Artificial IntelligenceBerkeley, USA$250.0MOpen source
DeepSeek AI70AI InfrastructureBeijing, China$8.4BOpen source
OpenRouter70InfrastructureSan Francisco, United States$153.5MOpen source
Pinecone69AI InfrastructureSan Francisco, United States$138.0MOpen source
Stability AI68Generative AILondon, United Kingdom$101.0MOpen source · Self-hostable
Dust65Agentic AIParis, France$15.0MOpen source
z.ai65Foundation ModelSan Francisco, USA$1.3BOpen source
Cartesia64Voice AISan Francisco, United States$191.0MOpen source
H2O.ai64Foundation ModelMountain View, United States$228.1MOpen source · Self-hostable
Cognigy (NICE)63Voice AgentDüsseldorf, GermanyOpen source
Lakera AI AG63AI SecurityBerlin, Germany$12.0MOpen source
Sarvam AI63Agentic AIBengaluru, India$234.0MOpen source
LiteLLM62Foundation ModelSan Francisco, United StatesOpen source · Self-hostable
Entire62Artificial Intelligence$60.0MOpen source · Self-hostable
LangChain61Agentic AISan Francisco, United States$260.0MOpen source
Sendbird61Conversational AISan Mateo, United StatesOpen source
Vectara60Agentic AIPalo Alto, United States$40.0MOpen source
Composio59Agentic AISan Francisco, United States$50.0MOpen source
Modular58AI InfrastructureSan Francisco, United States$380.0MOpen source
Converge Bio56Life SciencesSan Francisco, United States$5.5MOpen source · Self-hostable
- CLClerk56Developer ToolsSan Francisco, United States$69.0M
Open source
Auto-GPT56Agentic AI$12.0MOpen source · Self-hostable
Traceloop55LLMOpsTel Aviv, Israel$6.1MOpen source
pleias55AI InfrastructureParis, FranceOpen source
LightningAI55AI InfrastructureSan Francisco, United StatesOpen source
Feast AI54MLOpsSan Francisco, United StatesOpen source · Self-hostable
MosaicML (now Databricks)54Foundation ModelSan Francisco, United States$3.0BOpen source
| Company | Sector | License | HQ | Funding | Score | Website |
|---|---|---|---|---|---|---|
| Google | Internet | Open source | Mountain View, United States | $9.1B | 73 | |
| OpenAI | Artificial Intelligence | Open source | San Francisco, United States | $493.9B | 84 | |
| Chai | AI Chatbot | Open source | San Francisco, United States | $60.0M | 56 | |
| SpaceXAI | Frontier AI Lab | Open source | Palo Alto, United States | $90.0B | 76 | |
| PrivateGPT | AI Search Engine | Open source · Self-hostable | Toronto, Canada | — | 5 | |
| Revochat | Conversational AI | Open source | — | — | — | |
| Goumi | Foundation Model | Open source | Beaverton, United States | — | — | |
| Perplexity AI | Search Engine | Open source | San Francisco, United States | $591.4M | 71 | |
| MOMoonshot AI | Frontier AI Lab | Open source | Beijing, China | $3.9B | 68 | |
| Lacentral | Frontier AI Lab | Open source | San Francisco, United States | $11.3B | 68 | |
| Chai Research | AI Companion | Open source | Palo Alto, United States | $55.0M | 58 | |
| CHAI: AI Platform | AI Infrastructure | Open source | Palo Alto, United States | $3.7M | 56 | |
| Outlit | Agentic AI | Open source | — | $500K | 45 | |
| Dante | Artificial Intelligence | Open source | — | $1.5M | 45 | |
| DeepAI | AI Image Generation | Open source | San Francisco, United States | — | 33 | |
| Andraste | Agentic AI | Open source | San Francisco, United States | — | 32 | |
| GPT4All | Foundation Model | Open source · Self-hostable | New York, United States | — | 26 | |
| evo.ninja | Agentic AI | Open source | — | — | 12 | |
| Agentradio | AI Coding Assistant | Open source | — | — | 7 | |
| TinyFish | Artificial Intelligence | Open source | San Francisco, United States | — | 3 | |
| Redbuy | E-commerce | Open source | — | — | — | |
| Kedmah | Conversational AI | Open source | Tel Aviv, Israel | — | — | |
| Eazycare | HealthTech | Open source | — | — | — | |
| Moriwa | Conversational AI | Open source | — | — | — | |
| Lwai | Generative AI | Open source | — | — | — | |
| Denser AI | AI Chatbot | Open source | Tel Aviv, Israel | — | — | |
| Biblelens | AI Search Engine | Open source | — | — | — | |
| Cowpoke | AI Agent | Open source | — | — | — | |
| Askhorizon | Conversational AI | Open source | London, United Kingdom | — | — | |
| Dowjo | Foundation Model | Open source | — | — | — | |
| Kaliai | Foundation Model | Open source | San Francisco, United States | — | — | |
| Together AI | AI Infrastructure | Open source · Self-hostable | San Francisco, United States | $906.0M | 76 | |
| Lovable | No-Code/Low-Code | Open source | Stockholm, Sweden | $1.2B | 75 | |
| Arena | Artificial Intelligence | Open source | Berkeley, USA | $250.0M | 71 | |
| DeepSeek AI | AI Infrastructure | Open source | Beijing, China | $8.4B | 70 | |
| OpenRouter | Infrastructure | Open source | San Francisco, United States | $153.5M | 70 | |
| Pinecone | AI Infrastructure | Open source | San Francisco, United States | $138.0M | 69 | |
| Stability AI | Generative AI | Open source · Self-hostable | London, United Kingdom | $101.0M | 68 | |
| Dust | Agentic AI | Open source | Paris, France | $15.0M | 65 | |
| z.ai | Foundation Model | Open source | San Francisco, USA | $1.3B | 65 | |
| Cartesia | Voice AI | Open source | San Francisco, United States | $191.0M | 64 | |
| H2O.ai | Foundation Model | Open source · Self-hostable | Mountain View, United States | $228.1M | 64 | |
| Cognigy (NICE) | Voice Agent | Open source | Düsseldorf, Germany | — | 63 | |
| Lakera AI AG | AI Security | Open source | Berlin, Germany | $12.0M | 63 | |
| Sarvam AI | Agentic AI | Open source | Bengaluru, India | $234.0M | 63 | |
| LiteLLM | Foundation Model | Open source · Self-hostable | San Francisco, United States | — | 62 | |
| Entire | Artificial Intelligence | Open source · Self-hostable | — | $60.0M | 62 | |
| LangChain | Agentic AI | Open source | San Francisco, United States | $260.0M | 61 | |
| Sendbird | Conversational AI | Open source | San Mateo, United States | — | 61 | |
| Vectara | Agentic AI | Open source | Palo Alto, United States | $40.0M | 60 | |
| Composio | Agentic AI | Open source | San Francisco, United States | $50.0M | 59 | |
| Modular | AI Infrastructure | Open source | San Francisco, United States | $380.0M | 58 | |
| Converge Bio | Life Sciences | Open source · Self-hostable | San Francisco, United States | $5.5M | 56 | |
| CLClerk | Developer Tools | Open source | San Francisco, United States | $69.0M | 56 | |
| Auto-GPT | Agentic AI | Open source · Self-hostable | — | $12.0M | 56 | |
| Traceloop | LLMOps | Open source | Tel Aviv, Israel | $6.1M | 55 | |
| pleias | AI Infrastructure | Open source | Paris, France | — | 55 | |
| LightningAI | AI Infrastructure | Open source | San Francisco, United States | — | 55 | |
| Feast AI | MLOps | Open source · Self-hostable | San Francisco, United States | — | 54 | |
| MosaicML (now Databricks) | Foundation Model | Open source | San Francisco, United States | $3.0B | 54 |