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Sentim Emotion API

Freemium#13 of 14 in Emotion AI Software

Sentim Emotion API: A low-cost API for classifying emotions in messages and conversation context. Ranked #13 of 14 in Emotion AI Software by our editors (7.0/10); pricing: Free plan; best for low-cost text-message emotion classification.

7.0/10Editor score

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Sentim Emotion API7.0 Visit Sentim

At a glance

Editor score
7.0 / 10
Pricing
Free plan
Best for
Low-cost text-message emotion classification
Free plan
Yes
Paid from
$0.001/unit usage-based
Facts checked
24 Sep 2026

Where it wins
- Classifies a latest message using surrounding conversation context
- Analyzes batches of up to 25 separate text strings
- Includes 10,000 free messages each month; then $0.001 per message
Where it doesn't
- Handles text only, not audio or other input modalities
- Batch analysis does not use conversation context
- Requires authenticated API requests rather than a non-API interface

Our verdict on Sentim Emotion API

Sentim Emotion API classifies emotions in individual text messages and conversations. It is aimed at chatbot developers and teams working with conversational assistants or transcripts, and suits organizations that can make authenticated API requests. Conversation endpoints use surrounding messages to classify the latest message and can return emotion labels and scores for user messages. A separate batch endpoint analyzes up to 25 text strings at a time, without conversation context. The product is focused on text rather than multimodal emotion analysis, so teams needing audio or other input types should look elsewhere.

Pricing is usage-based. The Emotion Recognition API includes 10,000 free messages each month, with messages beyond that priced at $0.001 per message. The published plan information makes the free allowance and per-message price clear, while the unit price does not state a billing period. This model may fit teams that want to start with a defined monthly allowance and pay according to message volume beyond it. For buyers comparing costs, the relevant question is expected message volume; the price applies per message, not per batch.

The API is accessed through OAuth 2.0 client-credentials authentication, which makes it a fit for applications able to manage authenticated API calls rather than teams looking for a standalone interface. Email and documentation are listed as support channels. Its text-language support is listed as five primary languages. Choose Sentim when message-level emotion labels and scores, contextual classification, and low per-message pricing align with your project. Consider an alternative if your workflow depends on interpreting non-text inputs or needs context-aware analysis of batches of separate strings.

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Sentim Emotion API pricing

Plans Free planFreemium A usable free plan; paid tiers unlock the limits above. Prices checked 24 Sep 2026.

See plans on sentimllc.com

All 1 Sentim Emotion API plans and prices →

Sentim Emotion API fact sheet

Free plan	Yes
Paid from	$0.001/unit usage-based
Input modalities	text
Deployment	Api
Real-time analysis	Not verified
Supported languages	5
API access	Yes
Data retention control	Not verified
Deployment	Cloud
Support	Email, Docs
Built for	Small business, Mid-market, Enterprise (editorial estimate)
Pricing	Free plan (source)
Website	sentimllc.com
Facts checked	24 Sep 2026

Alternatives to Sentim Emotion API

See all Sentim Emotion API alternatives →

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Featured on iTechGuides

Sentim Emotion API is listed in our Emotion AI Software directory. Add the badge to your site — it links back to this page.

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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

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Last updated 7 Oct 2026 · How we research and update