A non-exclusive agency member is a freelancer who belongs to an Upwork agency but keeps the right to take independent contracts under their own profile, paid to their own account, alongside work assigned through the agency.
This is the looser of the two kinds of membership. A non-exclusive member has, in effect, two ways to be hired: a client can contract with them directly, in which case the contract is theirs, the 10% service fee comes off their payment and the money lands in their own balance; or the agency can assign them to an agency contract, in which case the agency bills, collects and pays them on its own terms. Upwork's Help Center describes the two streams as separate, with separate earnings and separate feedback, and both show on the member's freelancer profile along with the agency affiliation.
Non-exclusive membership suits freelancers who want an agency's deal flow without its control, and agencies that want to list a wide bench of specialists they can call on but do not employ. A senior freelancer may be a non-exclusive member of more than one agency; Upwork's Help Center states how many agencies one profile can belong to at once, and the number has changed, so it is not restated here.
The conflict to watch is rate. A client who sees a member's independent rate of $40 and the agency's range starting at $60 will ask why; the answer is overhead and management, and the agency usually prefers that the client never sees the comparison. That is why agencies push their core people towards exclusive membership and keep non-exclusive status for the periphery.
How Upwork Insights uses it
This term describes Upwork's own rules or product rather than a figure the index measures; the pages that do carry live figures are the stats and rate pages.