Sentiment + language + statistics
API · /nlp-api
Sentiment & NLP API
Analyse text in real time: sentiment scoring (positive / negative / neutral with the matched words), automatic language detection across 180+ languages, and a combined analysis endpoint with text statistics. No setup, no model hosting.
API health
healthy- Uptime
- 99.47%
- Server probes · 24h
- Avg latency
- 178 ms
- Server probes · 24h
- Subscribers
- 3,262
- active
- Total calls
- 189
- last 7 days
Pricing
Pick a tier — billed monthly, cancel anytime.
Free
Free
- 5,000 calls / month
- 2 requests / second
- Hard cap (429 above quota, no overage)
- 5,000 calls/month at 2 req/s
- No credit card
- Sentiment scoring + language detection (180+ languages)
Basic
€14.00 /month
- 120,000 calls / month
- 8 requests / second
- Hard cap (429 above quota, no overage)
- 120,000 calls/month at 8 req/s
- Combined analysis endpoint with text statistics
- Commercial use allowed
- Email support
Pro
€42.00 /month
- 600,000 calls / month
- 25 requests / second
- Hard cap (429 above quota, no overage)
- 600,000 calls/month at 25 req/s
- All endpoints incl. batch text analysis
- Priority email support
- Undercuts Twinword Ultra ($99/750k)
Mega
€119.00 /month
- 2,500,000 calls / month
- 60 requests / second
- Hard cap (429 above quota, no overage)
- 2,500,000 calls/month at 60 req/s
- 99.9% uptime SLA
- Priority support with 24h response
- Higher quota than Twinword Mega at under half the price
Built by
Related APIs
Other APIs with overlapping tags.
Stopwords API
Stopword lists and removal for 58 languages. Fetch the full stopword list for a language, see all supported languages with their word counts, check whether a single word is a stopword, or strip stopwords out of a block of text to get a clean keyword stream. Built on the open stopwords-iso dataset and served entirely in-memory, so responses are instant and the service is always available. Ideal for search indexing and relevance, NLP preprocessing and text mining, keyword extraction, tag generation and content tooling.
api.oanor.com/stopwords-api
Words API
Find words by meaning, sound and spelling — similar-meaning words (thesaurus), rhymes, autocomplete suggestions and wildcard spelling matches. Backed by Datamuse. Ideal for writing assistants, autocomplete, crosswords, word games, poetry tools and NLP preprocessing.
api.oanor.com/words-api
Translation API
Translate text between 40+ languages with a confidence score and alternative suggestions. Simple GET interface, no model hosting — ideal for localising content, chat messages, product data and user-generated text.
api.oanor.com/translate-api
Stack Exchange API
Search Stack Overflow and the Stack Exchange network — questions by relevance with scores, answer counts and tags, full question details, and user profiles with reputation, badges and location. Ideal for developer tools, tech-trend monitoring, Q&A aggregation and reputation lookups.
api.oanor.com/stackexchange-api
Frequently asked questions
Quick answers about pricing, quotas, and integration.
How do I get an API key for Sentiment & NLP API?
What's the rate limit for Sentiment & NLP API?
How much does Sentiment & NLP API cost?
Can I cancel my subscription anytime?
Is Sentiment & NLP API GDPR-compliant?
Pick an endpoint from the list on the left to see its details and try it.
Code snippets
Sign up to get an API key, then call any path under your slug.
curl https://api.oanor.com/nlp-api/SOME_PATH \
-H "x-oanor-key: oanor_test_..."
const res = await fetch("https://api.oanor.com/nlp-api/SOME_PATH", {
headers: { "x-oanor-key": "oanor_test_..." }
});
const data = await res.json();
$ch = curl_init("https://api.oanor.com/nlp-api/SOME_PATH");
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_HTTPHEADER, ["x-oanor-key: oanor_test_..."]);
$response = curl_exec($ch);
import requests
r = requests.get(
"https://api.oanor.com/nlp-api/SOME_PATH",
headers={"x-oanor-key": "oanor_test_..."},
)
print(r.json())
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