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. Soniox: Multilingual speech AI platform offering real-time and async speech-to-text and translation APIs for meetings and voice apps. 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 Soniox when building voice agents and dictation features into apps matters most. Trial each on a few real meetings before you commit — the better fit usually shows fast.
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.
Multilingual speech AI platform offering real-time and async speech-to-text and translation APIs for meetings and voice apps.
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
Soniox is a multilingual speech AI platform that provides speech-to-text, translation, and text-to-speech APIs aimed at developers building voice-enabled applications, including meeting transcription, voice agents, dictation, and call-center tools. Its speech recognition supports real-time streaming with low latency as well as asynchronous processing of recorded files, and it covers a broad set of languages with the ability to handle conversations where speakers switch languages mid-sentence. For meeting and multi-party scenarios, Soniox offers speaker separation so transcripts can attribute speech to individual participants, along with handling of names, alphanumerics, and domain-specific terms. The platform also includes real-time speech translation across many language pairs, which is useful for international calls and meetings. Soniox markets enterprise-grade compliance, including SOC 2 Type 2, ISO 27001, HIPAA, and GDPR, and offers multi-region deployment with data-residency options and a privacy-oriented architecture where audio is processed in real time. Because it is delivered as APIs and SDKs, organizations typically embed Soniox into their own products rather than using it as a standalone meeting application. Pricing varies by plan. Check the official website for current pricing.
Best suited for
Celeste AI is a free tier with paid upgrades (freemium); Soniox is a free tier with paid upgrades (freemium). Always confirm current pricing on each vendor's site before buying.
| Feature | Celeste AI | Soniox |
|---|---|---|
| Core capability | AI transcription specialized for Brazilian Portuguese | Real-time and asynchronous speech-to-text APIs |
| Standout feature | Meeting Assistant for capturing and documenting meetings | Speaker separation for multi-participant conversations |
| Team usage | AI Notes for organizing transcribed content | Real-time speech translation across many language pairs |
| Integrations | Support for multiple languages including English, Spanish, German, Italian, and French | Code-switching support for mid-sentence language changes |
| Languages & capture | On-demand credit-based usage plus flexible subscription plans | Web and server SDKs for browser and backend integration |
| Best-fit workflow | API access for integrating transcription into other workflows | Enterprise compliance with SOC 2, ISO 27001, HIPAA, and GDPR |
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.
Soniox
Choose Soniox if you need transcribing multilingual meetings and calls in real time — strengths include strong multilingual and translation capabilities for global meetings.
Celeste AI
Soniox
It depends on your workflow. Celeste AI is strong for brazilian teams transcribing meetings and calls in portuguese, while Soniox is strong for transcribing multilingual meetings and calls in real time. Both transcribe and summarize meetings.
Celeste AI is a free tier with paid upgrades and Soniox is a free tier with paid upgrades. Check each vendor's pricing page for the latest plans and free-tier limits.
You can — some teams pair them when each covers a different part of the meeting workflow.
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