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IBM Watson API

by IBM Watson Free tier

Allow developers to build applications that utilize machine learning technologies such as natural language processing, computer vision, and prediction.

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Quick Reference

Base URL https://developer.ibm.com Auth type API Key Header Auth header Authorization: Bearer YOUR_TOKEN Rate limit 60 req/min (Lite) Pricing Enterprise / contact sales Free quota None Documentation https://developer.ibm.com/watson/ Endpoint status Live — HTTP 200 — endpoint is accessible1.02s (checked Mar 29, 2026) Builder score D 36% builder-friendly
Pricing
28
Latency
60
Depth
25

Authentication

See documentation for authentication details

Authorization: Bearer YOUR_TOKEN

Pricing

Model subscription Starting price Enterprise / contact sales Free quota None

Lite (free): 1,000 API calls/mo (NLU). Plus from $0.003/item. Prices vary by service.

Key Endpoints

MethodPathDescription
GET / See documentation for endpoint reference

Sample Request

curl 'https://developer.ibm.com'

Sample Response

{}

Data sourced from API Map. Always verify pricing and rate limits against the official IBM Watson documentation.