Fastino

Fastino develops task-specific small language models (SLMs) optimized for agentic AI workflows, providing production-ready, fine-tuned models that move beyond general-purpose LLMs for specialized enterprise applications including text extraction, classification, reasoning, and structured data processing. The company's product portfolio includes GLiNER2, an open-vocabulary entity extraction model used across production systems serving 1 billion daily end users; GLiNER2-PII, specialized PII detection across 40+ entity types with high recall on noisy and multilingual input; GLiGuard, a lightweight guardrail model for prompt injection, jailbreak attempt, and unsafe content classification; and Pioneer, the first model agent that automatically retrains baseline open-source models on live inference data to improve accuracy over time. Fastino's models achieve over 3 million monthly downloads with 3,200+ GitHub stars, and the company provides fine-tuning capabilities and a model router for production AI workflows. The company is trusted by leading AI teams building production systems. Founded in 2024 and headquartered in Palo Alto, United States, Fastino has raised approximately $30.6 million at the Seed stage from investors including Insight Partners, M12 (Microsoft's venture fund), New Enterprise Associates, Valor Equity Partners, and Khosla Ventures.