FacialProof Speech Emotion Recognition API
FacialProof Speech Emotion Recognition API: Speech emotion analysis with live streaming, batch processing, and time-segment scores. Ranked #7 of 14 in Emotion AI Software by our editors (7.9/10); pricing: Free plan; best for teams tracking vocal emotion in live calls.
At a glance
- Editor score7.9 / 10
- PricingFree plan
- Best forTeams tracking vocal emotion in live calls
- Free planYes
- Real-time analysisYes
- Facts checked24 Sep 2026
Where it wins
- Streams live audio over WebSocket or WebRTC and processes recordings in batches.
- Scores emotion by time segment and tracks changes continuously during calls.
- Offers Python and JavaScript SDKs, with noise-resilient processing for calls.
Where it doesn't
- Free-tier usage limits and paid plan prices are not published on the product page.
- The product page does not explain how retention controls are configured.
- Emotion analysis is limited to voice and audio input.
Our verdict on FacialProof Speech Emotion Recognition API
FacialProof Speech Emotion Recognition API analyzes tone, pitch, prosody, and vocal stress to estimate emotion in live or recorded speech. It is aimed at teams monitoring call-center conversations, building voice assistants, or checking audio quality. The API detects anger, frustration, joy, fear, sadness, and neutrality, and returns probability scores across time segments. This makes it relevant when a team needs to follow shifts in vocal emotion through a call rather than assign one overall label to a recording.
Live audio can be streamed over WebSocket or WebRTC, while batch processing covers recorded audio. The API also supports continuous emotional tracking during calls and noise-resilient processing for VoIP and mobile calls. Developers can connect through an API or use the Python and JavaScript SDKs. The vendor says it supports English, Spanish, French, German, and Mandarin. Cloud and self-hosted deployment are listed, alongside web, desktop, and mobile platforms; the product is not described as an open-source option.
The vendor advertises a free tier with monthly usage limits, but the product page does not publish the quotas or paid plan pricing. It also offers API credit bundles in its shop without specifying whether or how they apply to this product, so buyers should clarify expected costs before planning sustained usage. The privacy policy says uploaded media may be deleted automatically or on request, while the available retention controls are not explained in detail. Choose FacialProof if vocal signals and real-time call tracking are central to the workflow; teams seeking transparent usage pricing or clearly documented retention configuration should compare alternatives.
FacialProof Speech Emotion Recognition API pricing
FacialProof Speech Emotion Recognition API fact sheet
| Free plan | Yes |
|---|---|
| Paid from | Not verified |
| Input modalities | voice/audio |
| Deployment | Not verified |
| Real-time analysis | Yes |
| Supported languages | 5 |
| API access | Yes |
| Data retention control | Yes |
| Deployment | Cloud, Self-hosted |
| Platforms | Web, Windows, macOS, Linux, iOS, Android |
| Support | |
| Built for | Small business, Mid-market, Enterprise (editorial estimate) |
| Pricing | Free plan |
| Website | facialproof.com |
| Facts checked | 24 Sep 2026 |
Alternatives to FacialProof Speech Emotion Recognition API
- Affectiva Emotion AIMultimodal emotion analysis for media research and automotive applications, priced by quote.9.2
- NViso Emotion AIOn-device emotion and behavior analysis spanning faces, bodies, gaze, gestures, and objects.8.8
- RealeyesCreative testing pairs facial-response measures with time-based analysis and optional surveys.8.6
See all FacialProof Speech Emotion Recognition API alternatives →
FacialProof Speech Emotion Recognition API vs the competition
- FacialProof Speech Emotion Recognition API vs Affectiva Emotion AI
- FacialProof Speech Emotion Recognition API vs NViso Emotion AI
- FacialProof Speech Emotion Recognition API vs Realeyes
- FacialProof Speech Emotion Recognition API vs Behavioral Signals API
- FacialProof Speech Emotion Recognition API vs audEERING devAIce
- FacialProof Speech Emotion Recognition API vs EMOS
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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
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