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. Substrata: AI sales intelligence platform that analyzes the social and emotional signals behind conversations to help dealmakers read buyer intent. Below, they line up on price, capture method, and how each fits a real meeting stack.
How Hosiqo compares and tests toolsFinal recommendation
Shortlist Celeste AI when brazilian teams transcribing meetings and calls in portuguese matters most, and Substrata when coaching sellers on social dynamics in high-stakes conversations matters most. Try them side by side on real calls before deciding — needs vary by team.
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.
AI sales intelligence platform that analyzes the social and emotional signals behind conversations to help dealmakers read buyer intent.
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
Substrata is an AI sales coaching and deal intelligence platform that takes a different angle from typical conversation intelligence tools: rather than focusing on transcription and summaries, it analyzes the social and emotional signals beneath sales conversations. Its core function is to model buyer psychology, attitudes, and momentum across interactions to help professional dealmakers understand intent and power dynamics. A central component is SoundWave, a real-time conversational analytics engine that listens to sales calls and analyzes voice tone, pace, pauses, interruptions, and the push-pull of social dynamics, surfacing the why behind what is being said rather than just the words. Substrata applies this signal analysis across conversations and email exchanges to gauge buyer sentiment and engagement, giving sellers and revenue leaders a read on how deals are actually progressing. The platform is aimed at B2B revenue professionals and leaders, and is positioned for smaller and mid-sized dealmaking teams that want behavioral insight into negotiations and high-value conversations. It has been recognized as a high performer across sales coaching, AI sales assistant, conversation intelligence, sales analytics, and revenue operations categories. Pricing varies by plan. Check the official website for current pricing.
Best suited for
Celeste AI is a free tier with paid upgrades (freemium); Substrata is a free tier with paid upgrades (freemium). Always confirm current pricing on each vendor's site before buying.
| Feature | Celeste AI | Substrata |
|---|---|---|
| Core capability | AI transcription specialized for Brazilian Portuguese | SoundWave real-time analysis of tone, pace, pauses, and interruptions |
| Standout feature | Meeting Assistant for capturing and documenting meetings | Behavioral analysis of buyer attitudes, intent, and power dynamics |
| Team usage | AI Notes for organizing transcribed content | Email signal analysis for sentiment and engagement |
| Integrations | Support for multiple languages including English, Spanish, German, Italian, and French | Deal momentum tracking across conversations |
| Languages & capture | On-demand credit-based usage plus flexible subscription plans | Coaching insights focused on social and emotional cues |
| Best-fit workflow | API access for integrating transcription into other workflows | SoundWave real-time analysis of tone, pace, pauses, and interruptions |
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.
Substrata
Choose Substrata if you need reading buyer intent and sentiment during negotiations — strengths include analyzes social and emotional subtext beyond plain transcription.
Celeste AI
Substrata
It depends on your workflow. Celeste AI is strong for brazilian teams transcribing meetings and calls in portuguese, while Substrata is strong for reading buyer intent and sentiment during negotiations. Both transcribe and summarize meetings.
Celeste AI is a free tier with paid upgrades and Substrata is a free tier with paid upgrades. Check each vendor's pricing page for the latest plans and free-tier limits.
Often yes: teams combine tools when one handles capture and another handles analysis.
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