Cactus X Nothing X HuggingFace Hackathon

​The future of personal AI lives on the edge, and companies like Cactus (YC S25), Nothing Phones, and Huggingface are working to make this a reality.

​We are inviting all Flutter, React Native and Kotlin developers to the Mobile Agent Hackathon. Build the future of local, private and personal AI with us.

​Challenge Tracks:

• ​Track 1: Design shared memory/RAG/knowledge for local LLMs 

• ​Track 2: Design a local-cloud hybrid inference strategy 

​Framework: Cactus (YC S25)

​Model: SmolVLM 500m or Qwen3 600m

​Test Device: Nothing Phones

​Team Sizes: 1-3 (every team member to apply separately)

​Location: Join us at our venue in London or globally online

​Date & Time: November 28-29, 5 pm to 5 pm GMT. Be prepared to hack all night!

​Prizes:

• ​Winner: Sponsored trip to San Francisco for a week + Lunch with a YC partner 

• ​Top 3: Guaranteed job interview at Cactus, HuggingFace and/or Nothing 

• ​Top 5: Roundtable dinner with leaders from Cactus, HuggingFace and Nothing

• ​Other prizes: Nothing Phone, HuggingFace Reachy Robot, 

​Details to be emailed after acceptance!