Who it is for
Owners deciding between trading a car in at a dealership and selling it privately.
Kelley Blue Book
Used car trade in and private party values
Overview
What Kelley Blue Book does
Kelley Blue Book publishes used vehicle values, and the app answers what a specific car is worth in the current week. Two figures are kept distinct. The Trade-In Value estimates what a dealership would hand over for the car as part of a purchase. The Private Party Value estimates a fair price for a sale to another individual instead.
A vehicle can be identified in several ways, going by the sample prompts: year, make, model and trim; a VIN; or a licence plate together with the state that issued it.
The record notes more than ninety years of publishing these values. The app itself is the valuation lookup rather than a tool for listing or selling a car.
What stands out
The split between the trade in figure and the private party figure is the substance of the answer.
Availability
Where Kelley Blue Book is listed
Kelley Blue Book is listed in the ChatGPT apps directory only. Cox Automotive Enterprise has no connector under the same domain in the Claude directory; 392 of the 3,150 products here are on both marketplaces, and this is not one of them.
ChatGPT apps are built on MCP, and the same server can back a Claude connector, so the absence is a distribution decision rather than a technical one.
ChatGPT listing
In the ChatGPT apps directory
- Developer
- Cox Automotive Enterprise
- Filed under
- Other
- Listed since
- June 2026
- Authentication
- Authenticates when installed
- Website
- kbb.com
- Policies published
- Privacy policy · Terms of service
- Official listing
- Open in ChatGPT
- Snapshot
- August 2026
Example prompts from the listing
- What's the trade-in value of my 2020 Honda Accord LX?
- How much is my SUV worth? License plate is ABC1234 from California
- How much can I sell my truck for? My VIN is 1FTEW1CP8PKD03710.
Nearby
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UK vehicle lookup by registration plate
ChatGPT
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Vedic birth chart readings, dashas, transits and muhurat timing
Claude
Autotrader by Autotrader Limited
UK car marketplace search by make and model
ChatGPT
This is an independent catalogue entry compiled by Node8 from Kelley Blue Book's public marketplace listing as it stood in August 2026. Listing facts come from the marketplaces; the comparisons against the rest of the directory and any live-endpoint measurements are Node8's. Node8 is not affiliated with Cox Automotive Enterprise, and inclusion here is not an endorsement.
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