NVIDIA Nemotron + OpenManus: $31.4B Agent Market and the Open Source Disruption

The AI agent market hit $31.4 billion in Q1 2026. Open source is capturing an outsized share of that growth. NVIDIA released Nemotron 70B in October 2025, an open source instruction-tuned LLM that matches GPT-4o on benchmarks while costing 5.4 times less to run. One month later, OpenManus dropped and reached 72,000 GitHub stars by March 2026, growing 3,314% in twelve months. These two releases are not coincidental. They represent a structural shift in how AI capability diffuses through the market, and the stock market noticed. This article covers the benchmarks, the economics, the adoption data, and the stock impact. The Market Context The AI agent market grew 283% year-over-year from Q1 2025 to Q1 2026. That growth rate exceeds even the explosive expansion seen in the broader AI infrastructure sector. Open source agents accounted for 21.7% of the market by Q1 2026, up from 9.8% a year prior. The divergence between proprietary and open source growth rates tells the story. While enterpr