Together AI, a company that helps developers build and run open-source AI models, has crossed the $8 billion valuation threshold. The milestone comes after a Series C funding round that pulled in over $1 billion, more than doubling the $3.3 billion valuation the company carried just over a year ago.
The Series C round closed in April 2026 and included a $1 billion primary tranche along with a $44.89 million Series C-1 extension, landing the company at a $7.5 billion valuation on paper, though reporting indicates the effective valuation now exceeds $8 billion.
For context, Together AI’s February 2025 Series B valued the company at $3.3 billion. That means the valuation roughly 2.4x’d in about 14 months. Cumulative funding now sits at approximately $1.58 billion. The platform currently supports over 450,000 developers and touts 2-3x faster performance on open-source models compared to major cloud providers.
The crypto angle: Pearl Research Labs partnership
On May 15, 2026, Together AI announced a strategic partnership with Pearl Research Labs, a move that introduces blockchain-based cost subsidies into Together AI’s inference pipeline.
