Open source focus
Open Source Alternatives to Claude
60 open source Frontier AI Lab options similar to Claude, 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.
Google DeepMind83Frontier AI LabLondon, United Kingdom$676.7MOpen source
OpenAI84Artificial IntelligenceSan Francisco, United States$493.9BOpen source
DeepSeek AI70AI InfrastructureBeijing, China$7.0BOpen source
Lacentral68Frontier AI LabSan Francisco, United States$11.3BOpen source
- XAxAI78Frontier AI LabPalo Alto, United States$90.0B
Open source
Neptune39MLOpsNew York, United States$11.0MOpen source
AA-I Technologies58Frontier AI LabSan Francisco, United States$20.0MOpen source
Imbue47Artificial IntelligenceSan Francisco, United StatesOpen source
K-Scale Labs40Frontier AI LabSan Francisco, United StatesOpen source · Self-hostable
Neurel40Foundation ModelSan Francisco, United StatesOpen source
Fundamental Research Labs22Frontier AI LabSan Francisco, United States$10.0MOpen source
World Models21Frontier AI LabOpen source
EratosFoundation ModelOpen source
LairaosFoundation ModelOpen source
PalantearsFoundation ModelOpen source
- MOMoonshot AI66Frontier AI LabBeijing, China$250.0M
Open source
z.ai65Foundation ModelSan Francisco, USA$1.3BOpen source
Tzafon54Frontier AI LabSan Francisco, United States$15.0MOpen source
Beyondfrontier35Frontier AI LabTel Aviv, IsraelOpen source
Str3Agentic AISan Francisco, United StatesOpen source
UltimathFoundation ModelOpen source
ForgenticFoundation ModelTel Aviv, IsraelOpen source
BingranAgentic AIBerkeley, United StatesOpen source
1agiFrontier AI LabOpen source
Lakera AI AG63AI SecurityBerlin, Germany$12.0MOpen source
Agency58Agentic AISan Francisco, United States$20.0MOpen source
Chai56AI ChatbotSan Francisco, United States$62.0MOpen source
Cajal55B2BSan Francisco, United States$4.5MOpen source
RecursiveMAS44Agentic AITel Aviv, Israel$1.5MOpen source
Pluromica40AI InfrastructureSan Francisco, United StatesOpen source
Romulous35Agentic AISan Francisco, United StatesOpen source
Parlant27AI AgentsTel Aviv, IsraelOpen source · Self-hostable
CRAB26Agentic AIOpen source · Self-hostable
Vibranium Dome23AI AgentsOpen source · Self-hostable
Axonmedical4HealthTechOpen source
ImbrosFrontier AI LabOpen source · Self-hostable
JanuslabAgentic AISan Francisco, United StatesOpen source
Together AI76AI InfrastructureSan Francisco, United States$906.0MOpen source · Self-hostable
NemoClaw75Artificial IntelligenceOpen source · Self-hostable
Perplexity AI71Search EngineSan Francisco, United States$591.4MOpen source
OpenRouter70InfrastructureSan Francisco, United States$153.5MOpen source
Kyutai69Frontier AI LabParis, France$300.0MOpen source · Self-hostable
Pinecone69AI InfrastructureSan Francisco, United States$138.0MOpen source
Thinking Machines Lab Inc.69Frontier AI LabSan Francisco, United States$2.0BOpen source
Stability AI68Generative AILondon, United Kingdom$101.0MOpen source · Self-hostable
Dust65Agentic AIParis, France$15.0MOpen source
H2O.ai64Foundation ModelMountain View, United States$228.1MOpen source · Self-hostable
Cartesia64Voice AISan Francisco, United States$191.0MOpen source
Sarvam AI63Agentic AIBengaluru, India$234.0MOpen source
Chai Research63AI CompanionPalo Alto, United States$55.0MOpen source
Cognigy (NICE)63Voice AgentDüsseldorf, GermanyOpen source
RadixArk62Artificial IntelligencePalo Alto, USA$20.0MOpen source
LiteLLM62Foundation ModelSan Francisco, United StatesOpen source · Self-hostable
LangChain61Agentic AISan Francisco, United States$260.0MOpen source
Sendbird61Conversational AISan Mateo, United StatesOpen source
Giskard60Artificial IntelligenceParis, France$2.5MOpen 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
CHAI: AI Platform56AI InfrastructurePalo Alto, United States$3.7MOpen source
| Company | Sector | License | HQ | Funding | Score |
|---|---|---|---|---|---|
| Google DeepMind | Frontier AI Lab | Open source | London, United Kingdom | $676.7M | 83 |
| OpenAI | Artificial Intelligence | Open source | San Francisco, United States | $493.9B | 84 |
| DeepSeek AI | AI Infrastructure | Open source | Beijing, China | $7.0B | 70 |
| Lacentral | Frontier AI Lab | Open source | San Francisco, United States | $11.3B | 68 |
| XAxAI | Frontier AI Lab | Open source | Palo Alto, United States | $90.0B | 78 |
| Neptune | MLOps | Open source | New York, United States | $11.0M | 39 |
| AA-I Technologies | Frontier AI Lab | Open source | San Francisco, United States | $20.0M | 58 |
| Imbue | Artificial Intelligence | Open source | San Francisco, United States | — | 47 |
| K-Scale Labs | Frontier AI Lab | Open source · Self-hostable | San Francisco, United States | — | 40 |
| Neurel | Foundation Model | Open source | San Francisco, United States | — | 40 |
| Fundamental Research Labs | Frontier AI Lab | Open source | San Francisco, United States | $10.0M | 22 |
| World Models | Frontier AI Lab | Open source | — | — | 21 |
| Eratos | Foundation Model | Open source | — | — | — |
| Lairaos | Foundation Model | Open source | — | — | — |
| Palantears | Foundation Model | Open source | — | — | — |
| MOMoonshot AI | Frontier AI Lab | Open source | Beijing, China | $250.0M | 66 |
| z.ai | Foundation Model | Open source | San Francisco, USA | $1.3B | 65 |
| Tzafon | Frontier AI Lab | Open source | San Francisco, United States | $15.0M | 54 |
| Beyondfrontier | Frontier AI Lab | Open source | Tel Aviv, Israel | — | 35 |
| Str3 | Agentic AI | Open source | San Francisco, United States | — | — |
| Ultimath | Foundation Model | Open source | — | — | — |
| Forgentic | Foundation Model | Open source | Tel Aviv, Israel | — | — |
| Bingran | Agentic AI | Open source | Berkeley, United States | — | — |
| 1agi | Frontier AI Lab | Open source | — | — | — |
| Lakera AI AG | AI Security | Open source | Berlin, Germany | $12.0M | 63 |
| Agency | Agentic AI | Open source | San Francisco, United States | $20.0M | 58 |
| Chai | AI Chatbot | Open source | San Francisco, United States | $62.0M | 56 |
| Cajal | B2B | Open source | San Francisco, United States | $4.5M | 55 |
| RecursiveMAS | Agentic AI | Open source | Tel Aviv, Israel | $1.5M | 44 |
| Pluromica | AI Infrastructure | Open source | San Francisco, United States | — | 40 |
| Romulous | Agentic AI | Open source | San Francisco, United States | — | 35 |
| Parlant | AI Agents | Open source · Self-hostable | Tel Aviv, Israel | — | 27 |
| CRAB | Agentic AI | Open source · Self-hostable | — | — | 26 |
| Vibranium Dome | AI Agents | Open source · Self-hostable | — | — | 23 |
| Axonmedical | HealthTech | Open source | — | — | 4 |
| Imbros | Frontier AI Lab | Open source · Self-hostable | — | — | — |
| Januslab | Agentic AI | Open source | San Francisco, 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 |
| Perplexity AI | Search Engine | Open source | San Francisco, United States | $591.4M | 71 |
| OpenRouter | Infrastructure | Open source | San Francisco, United States | $153.5M | 70 |
| Kyutai | Frontier AI Lab | Open source · Self-hostable | Paris, France | $300.0M | 69 |
| Pinecone | AI Infrastructure | Open source | San Francisco, United States | $138.0M | 69 |
| Thinking Machines Lab Inc. | Frontier AI Lab | Open source | San Francisco, United States | $2.0B | 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 |
| H2O.ai | Foundation Model | Open source · Self-hostable | Mountain View, United States | $228.1M | 64 |
| Cartesia | Voice AI | Open source | San Francisco, United States | $191.0M | 64 |
| Sarvam AI | Agentic AI | Open source | Bengaluru, India | $234.0M | 63 |
| Chai Research | AI Companion | Open source | Palo Alto, United States | $55.0M | 63 |
| Cognigy (NICE) | Voice Agent | Open source | Düsseldorf, Germany | — | 63 |
| RadixArk | Artificial Intelligence | Open source | Palo Alto, USA | $20.0M | 62 |
| LiteLLM | Foundation Model | Open source · Self-hostable | San Francisco, United States | — | 62 |
| LangChain | Agentic AI | Open source | San Francisco, United States | $260.0M | 61 |
| Sendbird | Conversational AI | Open source | San Mateo, United States | — | 61 |
| Giskard | Artificial Intelligence | Open source | Paris, France | $2.5M | 60 |
| 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 |
| CHAI: AI Platform | AI Infrastructure | Open source | Palo Alto, United States | $3.7M | 56 |