AI funding rounds in October 2025: 20 rounds
- Legora raises $150M Series C, . AI apps. Builds an AI workspace for lawyers to research, review and draft legal work.
- Lyzr raises $8M Series A, . AI apps. Led by Rocketship.vc. Lyzr offers an enterprise platform for building, governing and deploying AI agents.
- Fireworks AI raises $250M Series C, . AI infrastructure. Led by Lightspeed Venture Partners, Index Ventures, Evantic. Fireworks AI offers an inference cloud for running, fine-tuning and scaling open-source generative AI models.
- Mem0 raises $20M Series A, . AI infrastructure. Led by Basis Set Ventures. Mem0 builds a memory layer that lets AI apps and agents remember users and context across sessions.
- Mem0 raises $3.9M Seed, . AI infrastructure. Led by Kindred Ventures. Mem0 builds a memory layer that lets AI apps and agents remember users and context across sessions.
- Mercor raises $350M Series C, . AI apps. Led by Felicis. Mercor runs a marketplace that matches domain experts with AI labs and companies for contract work such as model training and evaluation.
- Crusoe raises $1.4B Series E, . AI infrastructure. Led by Valor Equity Partners, Mubadala Capital. Crusoe builds and operates energy-first AI data centers and a GPU cloud for training and inference.
- Chainguard raises $280M Growth, . Security. Chainguard provides hardened, minimal container images and open source packages to secure the software supply chain.
- Natural raises $9.8M Seed, . AI infrastructure. Natural builds payments infrastructure that lets AI agents send, receive and manage money.
- Estuary raises $17M Series A, . Data infrastructure. Led by M13. Estuary runs a managed platform that moves data between systems using change data capture, streaming and batch pipelines.
- OpenEvidence raises $200M Series C, . AI apps. Led by GV. OpenEvidence is an AI medical search and reference tool that answers clinical questions for doctors using peer-reviewed literature.
- LangChain raises $125M Series B, . Developer tools. Led by IVP. LangChain makes open source frameworks and the LangSmith platform for building, testing and deploying LLM agents.
- General Intuition raises $134M Seed, . AI models. Led by Khosla Ventures, General Catalyst. Trains AI agents with spatial and temporal reasoning using video game footage.
- Jack & Jill raises $20M Seed, . AI apps. Led by Creandum. Jack & Jill is an AI hiring marketplace where one agent coaches job seekers and another works for employers to broker introductions.
- Reflection raises $2B, . AI models. Builds open-weight frontier AI models as an American open alternative.
- n8n raises $180M Series C, . AI infrastructure. Led by Accel. n8n builds a workflow automation and AI agent orchestration platform with a visual builder and fair-code licensing.
- ClickHouse raises a Series C round, . Databases. ClickHouse builds an open source column-oriented database for real-time analytics, offered as a managed cloud service.
- Heidi Health raises $65M Series B, . AI apps. Led by Point72 Private Investments. Heidi Health makes an AI medical scribe and care assistant that writes clinical notes and handles admin for clinicians.
- Supabase raises $100M Series E, . Databases. Led by Accel, Peak XV. Supabase offers an open source Postgres-based backend platform with auth, storage and APIs for app developers.
- Smallest.ai raises $8M Seed, . AI models. Smallest.ai builds real-time speech models and voice AI agents for enterprises.