Best Emotion Detection APIs in 2024

What is Emotion Detection API?

Emotion detection, also known as emotion recognition, entails breaking down written text into its constituents, analyzing them, and determining the emotional expression conveyed therein. Using machine learning and NLP algorithms, this process can pinpoint specific emotions, such as happiness, anger, and sadness.

Emotion analysis is typically favored over sentiment analysis when a more nuanced understanding of human reactions is required. While sentiment analysis categorizes text as positive, negative or neutral, emotion analysis delves deeper into identifying specific emotions like happiness, anger, sorrow or amazement.

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Emotion analysis is crucial in capturing the complete spectrum of human emotions, which makes it beneficial in areas such as market research, mental health evaluation and personalised content creation. Sentiment analysis, however, is a more straightforward option and could be suitable for tasks such as assessing general customer feedback or monitoring brand reputation.

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Emotion Recognition APIs use cases

You can use Emotion Detection in numerous fields, here are some examples of common use cases:

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1. Market Research: Companies can utilize emotion recognition technology to analyze customer responses to advertisements, products, or services. This enables a better understanding of the emotional impact of marketing campaigns and allows for improvements to be made to marketing strategies.
2. User Experience (UX) Testing: Emotion recognition can be incorporated into UX testing to assess users' emotional responses to website designs, mobile apps, or other digital interfaces. This valuable insight can aid in enhancing user satisfaction and guide further development.
3. Education and E-Learning: In educational settings, emotion recognition can be utilized to evaluate pupil engagement and comprehension. It can provide feedback on how efficiently pupils are grasping the material, enabling customized learning experiences.
4. Healthcare: Emotion recognition can be applied in mental health diagnostics and treatment. It may help therapists and counselors to monitor patient emotions during therapy sessions and track progress over time.
5. Entertainment: Video game developers could employ emotion recognition technology to enhance gaming experiences by adapting game dynamics based on the player's emotions. This technique may also have potential in the film industry for analyzing audience engagement.

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Best Emotion Detection APIs on the market

While comparing Emotion Detection  APIs, it is crucial to consider different aspects, among others, cost security and privacy. Emotion Recognition experts at Eden AI tested, compared, and used many Emotion Detection APIs of the market. Here are some actors that perform well (in alphabetical order):

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• Komprehend
• Lettria
• NLPCloud
• OneAI
• Twinword
• VernAI

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1. Komprehend

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Komprehend.io provides a flexible and powerful solution for natural language processing (NLP) that can be easily integrated into applications or research studies that involve textual data. The platform employs advanced machine learning algorithms and APIs to access models capable of performing several NLP tasks, including sentiment analysis, entity recognition, and emotion detection.

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2. Lettria

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Lettria's API enables the extraction of emotions from textual data. The objective is to automatically classify emotions conveyed by written language, including happiness, sadness, anger, fear, and the like. This is achieved by employing algorithms that have been trained on numerous annotated texts, with the emotions they convey being manually labeled.

They employ rule-based and machine learning algorithms, in addition to customizable solutions that can be constructed on the Lettria platform, to precisely perceive emotions on the level of both individual sentences and smaller sentence parts.

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3. NLP Cloud - Available on Eden AI

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NLP Cloud is an advanced artificial intelligence system that lets you make use of up-to-date AI engines and train your own engines with your own data. The Emotion Detection API is a flexible tool that works by utilizing Natural Language Processing to examine and identify emotions within textual information. It offers quick processing, supports several languages, and options to personalize outputs.

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4. OneAI

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OneAI's Emotion Detection system identifies feelings expressed through written language. You can use the results to find out how people feel about particular topics, examine customer service phone calls and online conversations, and gauge the neutrality of texts.

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5. Twinword

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Twinword's Emotion Detection API scans paragraphs of text to detect emotions. In total, the API categorizes six emotions: joy, anger, sadness, disgust, surprise, and fear. After performing the analysis, our Emotion Analysis API reveals which of the six emotional states were detected in the text.

The capability to detect these emotions in a paragraph of text presents new opportunities for businesses. This API facilitates the measurement and analysis of user experience for marketers, offering a fresh approach and enabling companies to tailor their website or application to customer emotions.

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6. Vern AI - Available on Eden AI

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Vern AI has been developed to accurately detect human emotions in communication with an 80% accuracy rate. The scale ranges from 0 to 100, allowing it to predict the intended meaning of the user. The intensity of emotions experienced is displayed on the scale, providing scores for anger, sadness, fear, love, and affection.

It has achieved success in examining chatbot and virtual assistant technologies, evaluating mental health applications, and scrutinizing both internal and external organizational communications - including but not limited to those related to human resources, marketing, social media, and public relations.

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Performance Variations of Emotion Detection

Emotion Detection API performance can vary depending on several variables, including the technology used by the provider, the underlying algorithms, the amount of the dataset, the server architecture, and network latency. Listed below are a few typical performance discrepancies between several Emotion Recognition APIs:

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1. Data Quality and Diversity: The quality and diversity of the training data have a significant impact on the model's ability to generalize to new and unseen data. The model may have difficulties accurately detecting emotions in real-world scenarios if the training data lacks diversity in terms of demographics, cultural backgrounds, or expressions.
2. Language Considerations: Different languages can possess unique linguistic nuances and emotional expressions. Models trained on one language might not be able to provide accurate results in other languages, hence language-specific or multi-language models may be required for precise detection.
3. Bias and Fairness: Bias in training data can lead to biased predictions. Emotion detection systems should be evaluated for fairness to ensure that they do not disproportionately favor or disadvantage specific demographic groups.

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Why choose Eden AI to manage your Emotion Recognition APIs

Companies and developers from a wide range of industries (Social Media, Retail, Health, Finances, Law, etc.) use Eden AI’s unique API to easily integrate Emotion Detection tasks in their cloud-based applications, without having to build their solutions.

Eden AI offers multiple AI APIs on its platform among several technologies: Text-to-Speech, Language Detection, Sentiment Analysis, Face Recognition, Question Answering, Data Anonymization, Speech Recognition, and so forth.

We want our users to have access to multiple Emotion Detection engines and manage them in one place so they can reach high performance, optimize cost, and cover all their needs. There are many reasons for using multiple APIs :

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• Fallback provider is the ABCs: You need to set up a provider API that is requested if and only if the main EMotion Recognition API does not perform well (or is down). You can use the confidence score returned or other methods to check provider accuracy.
• Performance optimization: After the testing phase, you will be able to build a mapping of providers’ performance based on the criteria you have chosen (languages, fields, etc.). Each data that you need to process will then be sent to the best Emotion Recognition.‍
• Cost - Performance ratio optimization: You can choose the cheapest Emotion Detection provider that performs well for your data.
• Combine multiple AI APIs: This approach is required if you look for extremely high accuracy. The combination leads to higher costs but allows your AI service to be safe and accurate because Emotion Detection APIs will validate and invalidate each other for each piece of data.

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How Eden AI can help you?

Eden AI is the future of AI usage in companies: our app allows you to call multiple AI APIs.

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• Centralized and fully monitored billing on Eden AI for all Emotion Detection APIs.
• Unified API for all providers: simple and standard to use, quick switch between providers, access to the specific features of each provider.
• Standardized response format: the JSON output format is the same for all suppliers thanks to Eden AI's standardization work. The response elements are also standardized thanks to Eden AI's powerful matching algorithms.
• The best Artificial Intelligence APIs in the market are available: big cloud providers (Google, AWS, Microsoft, and more specialized engines).
• Data protection: Eden AI will not store or use any data. Possibility to filter to use only GDPR engines.

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You can see Eden AI documentation here.

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Next step in your project

The Eden AI team can help you with your Emotion Detection integration project. This can be done by:

• Organizing a product demo and a discussion to better understand your needs. You can book a time slot on this link: Contact
• By testing the public version of Eden AI for free: however, not all providers are available on this version. Some are only available on the Enterprise version.
• By benefiting from the support and advice of a team of experts to find the optimal combination of providers according to the specifics of your needs.
• Having the possibility to integrate on a third-party platform: we can quickly develop connectors.

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