Zillow (Bridge API) vs Zumper for AI agents
Zillow Group's developer portal lists APIs such as MLS Listings (served through the Bridge Listing Output platform), Public Records and Zestimates, and the listings and public records APIs are invite-only. Zumper is a US rental listings marketplace; its developer-facing offering is an inbound feed for property managers to send listings to Zumper, not an API to read listings.
The short answer
- Zillow (Bridge API): Brokers and approved vendors that already have MLS relationships and want a RESO-normalized feed from Zillow's Bridge platform.
- Zumper: Getting rental listings in front of renters (including inside ChatGPT) for property managers, not reading listing data.
Side by side
| Zillow (Bridge API) | Zumper | |
|---|---|---|
| Searches | MLS listing data from the MLS partners connected to Bridge; a separate Public Records API covers parcel, assessment and county transaction data. | – |
| Returns | JSON listing records normalized to the RESO Data Dictionary (MLS Listings API). | – |
| Before the first call | An invitation: you request access through a form, and every MLS partner decides whether you get its data. | – |
| Acting on a result | – | On Zumper itself, leads and tour requests go through Zumper's listing pages, including from its ChatGPT app. |
| Coverage | US and Canada, but only for MLSs that partner with Bridge and approve you. | US rentals |
Where Openpath fits
Openpath has no homes listed yet. Owners and landlords can list a home for rent or sale on Openpath today, free, and agents will find it through the same search as jobs and businesses. Get listed.
Sources
Every line about another company comes from its own pages. Prices and terms change, so check the source before you rely on one.
Zillow (Bridge API), read on October 15, 2026:
- zillowgroup.com/developers/api/mls-broker-data/mls-listings: “The Bridge Listing Output platform allows brokers and developers to access MLS listing data via a modern RESTful API.”
- zillowgroup.com/developers/api/mls-broker-data/mls-listings: “The platform is currently invite only, so please contact us for the latest list of available MLS integrations.”
- zillowgroup.com/developers/api/mls-broker-data/mls-listings: “All data access is at the discretion of our individual MLS partners in the US and Canada.”
- zillowgroup.com/developers/api/public-data/public-records-api: “This resource is really for commercial use cases by businesses.”
Zumper, read on October 15, 2026:
- zumper.com/manage/premium-listings: “Listings automatically posted to our partners: PadMapper, Microsoft Bing, Realtor.com, Chat GPT/Open AI, and more.”
- zumper.com/manage/resources/zumper-chatgpt-app: “All leads, tour requests, and renter actions continue to flow through Zumper's existing listing experience and reporting.”