Celeste AI: Brazilian Portuguese-focused AI voice and transcription platform offering on-demand transcription plus a meeting assistant and AI notes, with credit-based and subscription plans. Knovvu Analytics (SESTEK): Knovvu Analytics by SESTEK is an enterprise speech-and-text analytics platform that transcribes and analyzes 100% of customer voice and digital interactions for contact centers. This comparison weighs them on pricing, features, and everyday workflow fit.
How Hosiqo compares and tests toolsFinal recommendation
Shortlist Celeste AI when brazilian teams transcribing meetings and calls in portuguese matters most, and Knovvu Analytics (SESTEK) when real-time compliance and quality monitoring with instant supervisor alerts matters most. Run both through a week of actual calls to see which suits your workflow.
Brazilian Portuguese-focused AI voice and transcription platform offering on-demand transcription plus a meeting assistant and AI notes, with credit-based and subscription plans.
Knovvu Analytics by SESTEK is an enterprise speech-and-text analytics platform that transcribes and analyzes 100% of customer voice and digital interactions for contact centers.
Celeste AI is a Brazilian voice AI and transcription platform that specializes in Portuguese, particularly Brazilian Portuguese, while also processing audio in additional languages such as English, Spanish, German, Italian, and French. Originally known for automated audio-to-text transcription that the company positions as far more efficient than manual transcription, Celeste AI has expanded into a broader suite that includes a Meeting Assistant (Assistente de Reunião) and AI Notes (Notas de IA), alongside transcription and quality-monitoring offerings. The platform uses machine learning speech models tuned for Portuguese and is offered both as an on-demand service and via an API, so users and businesses can transcribe content as needed. Its on-demand model lets customers pay only for the hours they actually use by purchasing credits, with flexible subscription plans available for those who have recurring transcription needs. As a Brazilian company connected to local institutions such as FGV Ventures and the São José dos Campos technology park, Celeste AI is oriented toward the Brazilian market and Portuguese-language workflows, and it reports a growing user base. The service is currently operating, with a functioning login, demo requests, and support, and is suited to professionals and companies that need accurate Portuguese transcription and meeting documentation. Pricing varies by plan. Check the official website for current pricing.
Best suited for
Knovvu Analytics is the conversational analytics product from SESTEK, a conversational-automation company with over 20 years of experience that is now part of UNIFONIC. It captures contact-center interactions and uses SESTEK's own speech recognition engine (reported >97% accuracy) to transcribe voice calls into text, then applies AI to analyze conversations at scale. Core capabilities include speaker diarization, multilingual identification, automatic topic categorization, sentiment analysis, and root-cause discovery across thousands of voice- and text-based interactions. Real-time features detect prohibited words, urgent inquiries, and compliance issues, sending instant supervisor notifications and API-triggered actions. It pairs with SESTEK's Automated Quality Management for objective agent scoring and script-adherence monitoring. The platform integrates with contact-center systems such as Five9, Genesys, and Avaya, and offers HTTP/REST, MRCP, and WebSocket integration methods. Its containerized architecture supports both cloud and on-premises deployment. It is built for enterprise contact centers in banking, insurance, telecom, and e-commerce, serving customers including ING Bank, DHL, Vodafone, and Carrefour.
Best suited for
Celeste AI is a free tier with paid upgrades (freemium); Knovvu Analytics (SESTEK) is custom pricing (contact sales). Always confirm current pricing on each vendor's site before buying.
| Feature | Celeste AI | Knovvu Analytics (SESTEK) |
|---|---|---|
| Core capability | AI transcription specialized for Brazilian Portuguese | Speech-to-text transcription of voice interactions with reported >97% accuracy |
| Standout feature | Meeting Assistant for capturing and documenting meetings | Speaker diarization and multilingual speaker identification |
| Team usage | AI Notes for organizing transcribed content | AI-driven sentiment analysis and emotion detection |
| Integrations | Support for multiple languages including English, Spanish, German, Italian, and French | Automatic topic categorization and trend/root-cause analysis |
| Languages & capture | On-demand credit-based usage plus flexible subscription plans | Real-time alerts for prohibited words, urgent inquiries, and compliance issues |
| Best-fit workflow | API access for integrating transcription into other workflows | Automated quality management with objective agent scoring and script-adherence monitoring |
Celeste AI
Choose Celeste AI if you need brazilian teams transcribing meetings and calls in portuguese — strengths include strong focus on brazilian portuguese transcription accuracy.
Knovvu Analytics (SESTEK)
Choose Knovvu Analytics (SESTEK) if you need transcribing and analyzing 100% of customer service calls to surface trends and root causes — strengths include analyzes 100% of interactions rather than a sampled subset.
Celeste AI
Knovvu Analytics (SESTEK)
It depends on your workflow. Celeste AI is strong for brazilian teams transcribing meetings and calls in portuguese, while Knovvu Analytics (SESTEK) is strong for transcribing and analyzing 100% of customer service calls to surface trends and root causes. Both transcribe and summarize meetings.
Celeste AI is a free tier with paid upgrades and Knovvu Analytics (SESTEK) is custom pricing. Check each vendor's pricing page for the latest plans and free-tier limits.
Yes. Many teams run more than one meeting assistant when the workflows are complementary.
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