NeuralStackAdept announced a 1.4 billion Series D on July 14 2026 reaching an 18 billion post-money valuation. The round was led by Thrive Capital with participation from a16z and Index Ventures. Proceeds will scale its AI agents that perform desktop and web actions for knowledge workers.
The company reported 340 percent revenue growth in the past year with 2,800 enterprise customers. Its flagship agent now handles 47 distinct software applications including Salesforce and Slack. New features include multi-step planning with human oversight checkpoints.
Adept was founded in 2022 by former OpenAI and DeepMind researchers. Earlier rounds totaled 450 million before this financing. The startup competes directly with Anthropic and OpenAI in the agent space.
Why this matters
This valuation signals continued investor appetite for practical AI agents despite market cooling. Enterprises gain production-ready automation tools that reduce manual tasks. The funding round may trigger similar raises from competing agent startups.
Longer term the capital supports international expansion and new verticals such as finance and healthcare compliance. Success here could shift developer focus toward agent orchestration frameworks.