WolframAlpha

Overview

WolframAlpha is a computational knowledge engine: instead of returning web links, it computes answers — math problems, unit conversions, dates, chemical data, statistics, and thousands of curated domains. The API returns structured results (plain text, pods, images, JSON) driven by its curated knowledgebase and algorithms.

Note: the listing categorizes this under Machine Learning — it’s really a computational knowledge engine, not an ML model API.

Quick Start

Short-answer endpoint (one-line text, v1/short):

curl "https://api.wolframalpha.com/v1/short?appid=YOUR_APP_ID&input=population%20of%20china"

Full query with structured pods (v2/query, JSON):

curl "https://api.wolframalpha.com/v2/query?appid=YOUR_APP_ID&input=integrate%20x%5E2&format=json"

Simple image result (v1/simple — renders the answer as an image):

curl "https://api.wolframalpha.com/v1/simple?appid=YOUR_APP_ID&input=solve%20x%5E2-4%3D0"

Authentication

• Register for a free AppID at products.wolframalpha.com (create an app, copy the AppID).
• Send it as the appid query parameter on every request.

Rate Limits & Notes

• Free tier: roughly 2,000 queries/month (verify on the pricing page).
• v1/short returns a single-line answer (or empty with a didyoumean note); v2/query returns full pod structure; v1/simple renders an image.
• Inputs are plain-text natural language or math expressions (integrate x^2, 2+2, weather in Paris).
• Heavy or commercial use needs a paid plan.

FAQ

Is WolframAlpha free? Free tier ≈ 2,000 queries/month; more needs a paid plan.

What can I ask it? Math, units, dates, chemistry, astronomy, statistics, demographics and more — natural language or math expressions.

Which endpoint should I use? v1/short for a quick text answer, v2/query for structured pods (JSON), v1/simple for an image.