Sentiment Analysis API

We offer automatic recognition of sentiment on message or sentence level trough an Application Programming Interface (API). This API allows access to several sentiment analysis classifiers, which offer sentiment analysis functionality in real-time with a accuracy between 78% and 90%, depending on the language and classifier used.

Supported Languages

Currently, sentiment analysis can be performed in 7 languages:

1. English
2. Dutch
3. German
4. Spanish
5. French
6. Italian
7. Russian

Demo

You can try out our sentiment analysis using the simple demo below. This demo uses the strict "subjective" (positive/neutral/negative) classifier, and detects the language of the text automatically. This classifier strictly considers all non-explicit expressions of sentiment as "neutral". If you need a different stringency level or more accuracy, we provide classifiers customized to your requirements. Contact us to find out more!

Pricing

All our API's allow demo and testing use for free, with a limitation on a maximum number of calls per month. Use of this API beyond set limits requires a commercial account and a API key.

Following prices are based on volume of data bits per month and apply for commercial use:

< 5.000

Price per data bit:  

Free

Limit:

1 concurrent connection

5.000 - 100.000

Price per data bit:  

€ 0,0003

Limit:

2 concurrent connections

100.000 - 1.000.000

Price per data bit:  

€ 0,00025

Limit:

4 concurrent connections

1.000.000 - 10.000.000

Price per data bit:  

€ 0,0002

Limit:

8 concurrent connections

If you intend to process higher numbers of  data bits processed than specified here, please contact us for a customized offer.

These prices assume the use of this API on a pay-as-you-go basis. In this case, you are charged at the end of the month for the use of the system during the preceeding month. You are not bound by any contract and you are free to cease the use of the system without notice.

We offer substantial discounts on contract use for pre-agreed time periods or for use by educational institutions. Contact us to find our more about the discounts we offer.

All prices shown exclude Value Added Tax (VAT). Companies and institutions in the European Union can receive full VAT rebates in their respective countries. Companies and institutions in the United States are VAT exempt.

Implementation

You can test this API within the set request limits by using "DEMO_ACCOUNT" as the API key without notifying us.

For implementation details, please consult the API Documentation, or contact us for support