Parallel Web Systems, the AI agent-tool startup founded by former Twitter CEO Parag Agrawal, has raised a $100 million Series B at a $2 billion valuation, just five months after its previous $100 million round. The funding was led by Sequoia, with participation from existing investors including Kleiner Perkins, Index Ventures, Khosla Ventures, First Round Capital, Spark Capital, and Terrain Capital.
The company offers a suite of web search and research APIs specifically designed for AI agents, and counts notable customers such as Clay, Harvey, Notion, and Opendoor. It also serves banks and hedge funds, though it has not disclosed their names. Parallel reports that over 100,000 developers are using its products.
This rapid valuation growth—from $740 million in January 2026 to $2 billion now—reflects strong investor confidence in Agrawal's vision. The startup has raised a total of $230 million to date.
Agrawal's journey has been particularly inspiring given his tumultuous exit from Twitter. After Elon Musk acquired the platform, Agrawal and other top executives were fired and later sued Musk for $128 million in unpaid severance. The case was settled in October 2025 on undisclosed terms.