Pay-per-call or subscription: which social data API pricing is cheaper?

Most teams buying social data have lumpy demand: a burst of pulls around a launch, a quarterly report, a research sprint, then weeks of almost nothing. A monthly plan charges for the quiet weeks too. That is the whole argument, and it cuts both ways.

Pay-per-call wins when

• Usage swings from month to month. A launch month of 2,000 Xiaohongshu searches costs $40.00, and the next month can cost zero.
• You are still testing. Fifty TikTok searches to see whether the data is useful cost $0.10.
• You need several platforms a little each, rather than one platform a lot.

Even X moved its developer API from monthly tiers to prepaid pay-per-use credits in 2026, which says something about how unevenly people use data.

A subscription wins when

• You run the same large job every month, use most of the included volume, and the plan's effective price per unit is lower than the per-call rate.
• The plan includes things you would otherwise build: dashboards, alerts, sentiment scoring, seats for a team that does not code.

Find your break-even

Break-even calls = monthly fee ÷ price per call. Below that number, pay-per-call is cheaper. Price your real month with the public price book, then confirm one live call's charge:

import os, requests
from decimal import Decimal

book = requests.get("https://okdata.online/prices.json", timeout=30).json()
price = {e["id"]: Decimal(e["price"]) for e in book["endpoints"]}

my_month = {"weibo.posts.search": 600, "xiaohongshu.notes.search": 600}
print("pay per call:", sum(price[k] * n for k, n in my_month.items()), "USD")

H = {"Authorization": f"Bearer {os.environ['OKDATA_API_KEY']}"}
body = requests.get("https://api.okdata.online/v1/weibo/posts/search", headers=H,
                    params={"query": "新品发布"}, timeout=60).json()
print("one call charged:", body["meta"]["billing"]["amount"])

Weibo post search is $0.002 a call, so 600 a month is {{cost:weibo.posts.search600}}; hourly checks on 10 keywords (7,200 calls) come to {{cost:weibo.posts.search7200}}.

Hidden costs on each side

Subscriptions hide overage fees and quotas that reset unused. Pay-per-call hides runaway loops: a script that pages forever keeps paying. A prepaid balance caps that, because a call the balance cannot cover is refused with insufficient_balance and costs nothing. On okdata the balance does not expire, there are no seats or minimums, and failed calls are free. See the pricing page for every endpoint's price.