OpenAI is reportedly rushing to secure investor commitments for a private funding round ahead of Anthropic's IPO, with SoftBank (9984 JT) and MGX in discussions to participate, according to sources

OpenAI is reportedly rushing to secure investor commitments for a private funding round ahead of Anthropic's IPO, with SoftBank (9984 JT) and MGX in discussions to participate, according to sources.

Late-stage private rounds for frontier AI labs have followed a recognizable sequence: a headline valuation anchored by a small number of anchor investors, heavy participation from existing backers protecting their positions, and strategic capital tied to compute supply rather than pure financial sponsorship. SoftBank's presence fits an established pattern of large, concentrated commitments to AI infrastructure and model developers, while sovereign-linked capital such as MGX has recurred across the sector's recent funding waves. The reported timing ahead of a rival's listing is the notable feature: private rounds have historically been used to set a valuation marker and lock in demand before a comparable public float resets the comparable set and absorbs sector allocations. What distinguishes such rounds is whether the money is incremental or recycled within the existing investor base, since recycled commitments carry less signal about new demand. Worth watching are confirmation of lead terms, whether participation extends beyond the named parties, and any read-across to the listed sponsors most exposed to the sector's private marks. As a sourced report rather than a signed agreement, the story sits at the earlier, more reversible stage of the usual sequence.