Cars › Auctions API pricing: plans compared

Name: Cars › Auctions API plans
Creator: Datacircle
License: https://creativecommons.org/licenses/by/4.0/

Cars › Auctions APIs side by side: Copart lots, IAAI lots, Bring a Trailer search and Bring a Trailer lots.


API	Score						Price			Charges	Overage	In their words	Plan			Rate limit	The call		About the plan	Sources
API plan	Overall score	Price score	Data score	Cost to get started score	Bundle score	Performance score	$ per 1,000 items	Billing	$ a month	Most per search	Units cap	Their pitch	Pay	You get	Enough for	Per second	You send	Path	Plan	Read from
Copart lots · 1 plan
ReefAPI, $450 quarterly, Copart lots	N/A	100	N/A	56	100	N/A	$0.50	quarterly	$150		hard	Full detail for one lot by `lot_number`: VIN (publicly masked by Copart), make, model, trim, year, primary/secondary damage, title type & group, odometer, color, engine, fuel, drive, transmission, estimated retail value, current/high bid, sale date & time, yard location (city/state/zip/lat/long) and keys availability.	$450	300,000 credits a month	300,000 calls a month	10	lot_number (a lot's number, as in its copart.com URL)	/copart/v1/lot_detail	Enterprise quarterly
IAAI lots · 1 plan
ReefAPI, $450 quarterly, IAAI lots	N/A	100	N/A	56	100	N/A	$0.50	quarterly	$150		hard	The full record for one lot by `lot_number`, read from IAAI's own page view-model: VIN (masked by IAAI), year/make/model/trim, primary and secondary damage, title type/state/brand, odometer with its ACTUAL/NOT-ACTUAL brand, engine, fuel, drive, transmission, airbags, start code, vehicle grade, ACV, buy-now price, minimum bid, bid increment, pre-bid participant count, auction date, lane/aisle	$450	300,000 credits a month	300,000 calls a month	10	lot_number (a lot's item ID, as in its iaai.com URL)	/iaai/v1/lot_detail	Enterprise quarterly
Bring a Trailer search · 1 plan
ReefAPI, $450 quarterly, Bring a Trailer search	N/A	100	N/A	56	100	N/A	$0.50	quarterly	$150	10,000	hard	Search Bring a Trailer's CLOSED-auction archive — every lot the site has run, 265,000+ of them, with what each one actually made.	$450	300,000 credits a month	300,000 calls a month	10	query. Optional: exclude, outcome, category_id, origin_id, era, country, max_bid, min_year, max_year, closed_within, sort, page, max_results	/bringatrailer/v1/search	Enterprise quarterly
Bring a Trailer lots · 1 plan
ReefAPI, $450 quarterly, Bring a Trailer lots	N/A	100	N/A	56	100	N/A	$0.50	quarterly	$150		hard	One Bring a Trailer lot in full, live or closed: the outcome in the site's own words, the amount, the closing stamp, the seller's BaT handle, where the car is, the chassis/VIN, the whole BaT Essentials spec list, the lot number, and the view/watcher/comment counts the lot page publishes.	$450	300,000 credits a month	300,000 calls a month	10	listing (a lot's listing ID, its slug or its bringatrailer.com URL)	/bringatrailer/v1/detail	Enterprise quarterly

Datacircle lists all the GTM APIs

Checked 2026-10-30

Best GTM APIs

Opening the view this address names…4 of 44 rows

We add each plan's price, data, cost to get started, bundle and performance scores at their weights and scale the total to 100. Data and performance come from our benchmark, so until we benchmark the provider they are N/A, and so is the plan's overall score. A plan whose data score is 0 has an overall score of 0, whatever its other scores. Click or tap any score to see how we scored it. Move a weight to rank the plans by the new scores.

Price40

Price › $ per 1,000 items
Not found › $ per 1,000, the same on every plan here, so off this sheet

Data40

Our benchmark of the provider's call. N/A on a call we haven't benchmarked. Each API's sheet shows what we measured on each benchmarked plan, in the columns after its price.

Cost to get started10

About the plan › Who can get it, the same on every plan here, so off this sheet
Price › Billing
Plan › Pay
Price › $ per 1,000 items

On a pay as you go plan, the price of one result. On a tier that starts after a set number of monthly calls, the cost of those first calls.

Bundle10

Also pays for, what else a plan's price gets you, as the pricing pages list it. This sheet shows the column once we've read it for every plan.

Performance10

Our benchmark of the provider's call. N/A on a call we haven't benchmarked. Each API's sheet shows what we measured on each benchmarked plan, in the columns after its price.