# Gladia vs Soniox

Gladia records 232,451 monthly visits with +6.4% month-over-month growth and Freemium, Contact for Pricing pricing. Soniox records 335,647 monthly visits with +2.2% growth and Paid pricing.

| Metric | [Gladia](https://openaitools.app/tool/gladia) | [Soniox](https://openaitools.app/tool/soniox) |
| :--- | :--- | :--- |
| Website URL | https://www.gladia.io | https://soniox.com |
| Categories | AI Speech-to-Text, AI API, AI Transcription, Audio To Text AI | AI Speech-to-Text, AI Text-to-Speech, AI Translate, AI Speech Synthesis |
| Pricing Model | Freemium, Contact for Pricing | Paid |
| Monthly Visits | 232,451 | 335,647 |
| MoM Growth Rate | +6.4% | +2.2% |
| Primary Market | Brazil | United States |
| Direct Visits | 128,515 | 181,748 |
| Review Score | 4.4 | 4.5 |
| Saved Count | 6 | 0 |
| Supported Platforms | Website | Website |

## Gladia

Gladia provides the speech-to-text layer underneath voice products rather than a consumer transcription app. Teams capture audio from live streams, uploads, or real-time microphone input via WebSocket streaming or REST, then receive a clean transcript with timestamped segments. The platform reports hundreds of thousands of users and enterprise teams, and claims top accuracy on conversational audio benchmarks along with leading speaker detection powered by pyannoteAI.

On top of transcription, Gladia bundles native audio intelligence features that are billed only when enabled: speaker diarization, automatic language detection across 100+ languages, code-switching for conversations that mix languages, named entity recognition, PII redaction, sentiment analysis, and summarization. An audio-to-LLM pipeline lets you push transcripts into a large language model, either Gladia-hosted or your own (BYOM).

Integration options include Python and Node.js SDKs, webhooks, Zapier, and 50+ native integrations, plus native meeting-bot support for Zoom, Google Meet, and Microsoft Teams. The company emphasizes enterprise readiness with SOC 2 Type II, GDPR, HIPAA, and ISO 27001 compliance, 99.9% uptime SLA, EU and US hosting, and data-training opt-out by default. A playground, changelog, status page, and benchmark tools are available for evaluation.

**Pricing & Plans:** Gladia uses a freemium model: new developers can start with around €50 in transcription credits that do not expire, and add-on features are billed only when switched on. Enterprise and high-volume plans require contacting sales for custom pricing and SLA terms.

- **Real-time and async speech-to-text:** Stream audio over WebSocket for live captioning or submit files via REST for batch transcription, supporting MP3, WAV, FLAC, Opus, and most other formats.
- **Multilingual with code-switching:** Automatic, accent-sensitive language detection across 100+ languages, including code-switching for conversations that move between languages mid-sentence.
- **Native audio intelligence:** Speaker diarization, named entity recognition, PII redaction, sentiment analysis, and summarization, each billed only when you enable it.
- **Audio-to-LLM pipeline:** Feed transcripts directly into a large language model, either Gladia-hosted or a model you bring yourself (BYOM), to generate summaries and structured outputs.
- **Developer tooling and integrations:** Python and Node.js SDKs, webhooks, Zapier, 50+ integrations, plus meeting-bot support for Zoom, Google Meet, and Microsoft Teams.

**Strengths:** Broad language coverage with real-time code-switching, which many STT vendors lack; Audio intelligence features like diarization, sentiment, and PII redaction are built in rather than chained from multiple providers; Strong compliance posture with SOC 2 Type II, GDPR, HIPAA, and ISO 27001 plus EU hosting; Free starting credits and a public playground make evaluation straightforward

**Limitations:** Developer-focused API product: no simple consumer app for one-off transcription; Enterprise features such as on-premise deployment and some hosting controls are gated behind sales conversations

[Profile (Markdown)](https://openaitools.app/tool/gladia.md)

## Soniox

Soniox is a multilingual speech AI platform built for developers who need to power voice products. Rather than stitching together separate vendors for recognition, synthesis, and translation, it offers one unified API covering real-time speech-to-text, text-to-speech, and speech translation across 60+ languages and roughly 3,600 language pairs. The emphasis throughout is on doing the hard parts of voice AI well: high accuracy beyond English, seamless mid-sentence language switching, reliable handling of numbers and names, and low enough latency for live conversation.

On the recognition side, its STT models are marketed as highly accurate across accents, alphanumerics, domain vocabulary, and noisy, multi-speaker settings, with a newer model that recognises and filters out a voice agent's own speech. The text-to-speech line adds expressive control through audio tags, 200+ built-in voices tagged by gender, age, accent, and style, plus instant voice cloning from just a few seconds of audio. Translation handles code-switching environments where speakers change languages mid-sentence, and regional deployment lets teams run everything in-region for latency, data residency, and regulatory reasons, with audio processed in real time and never stored.

Soniox positions itself as enterprise-ready. Its site lists integrations with Perplexity, Genspark, Tana, and other platforms, and it publishes live side-by-side comparisons against providers like OpenAI, Google, Azure, Deepgram, Speechmatics, and AssemblyAI so developers can test on their own data. It is a paid API platform rather than a consumer app, aimed at teams building voice agents, wearables, dictation, and multilingual experiences at scale.

**Pricing & Plans:** Soniox is a paid API platform. Pricing is usage-based rather than a fixed consumer subscription, with plans and rates listed on its pricing page. There is no free consumer tier, so budget depends on your speech-processing volume and model choice.

- **Real-time speech-to-text:** Soniox STT delivers high accuracy across 60+ languages, accents, numbers, names, and domain vocabulary, engineered for fast multi-speaker conversations and noisy environments.
- **Text-to-speech and voice cloning:** Generate expressive speech in 60+ languages with audio tags, alphanumeric accuracy, seamless language switching, 200+ built-in voices, and instant voice cloning.
- **Real-time speech translation:** Translate speech in real time across roughly 3,600 language pairs, with low-latency output that starts before a sentence finishes and handles mid-sentence language switching.
- **Low-latency streaming:** Streaming models transcribe speech and start generating audio from the first few words, keeping interaction fast enough for live voice agents and captions.
- **Data residency and privacy:** Run STT and TTS in-region to meet latency, data residency, and regulatory needs, with audio processed in real time and never stored.

**Strengths:** One unified API for STT, TTS, and speech translation; Strong multilingual accuracy, including code-switching and alphanumerics; Low-latency streaming suited to live conversation and captions; Voice cloning and 200+ built-in voices for natural TTS

**Limitations:** Priced as an API platform, so cost scales with usage and needs developer integration; No consumer-facing free editing suite; it targets builders rather than end users; Advanced features like regional deployment may be limited during early access

[Profile (Markdown)](https://openaitools.app/tool/soniox.md)

## Frequently Asked Questions

### How do Gladia and Soniox compare in monthly traffic?

Gladia has 232,451 monthly visits, while Soniox has 335,647. Traffic estimates describe audience size, not product quality.

### How do their growth rates compare?

Gladia has a month-over-month growth rate of +6.4%; Soniox has +2.2%.

### How does pricing compare?

Gladia: Freemium, Contact for Pricing. Gladia uses a freemium model: new developers can start with around €50 in transcription credits that do not expire, and add-on features are billed only when switched on. Enterprise and high-volume plans require contacting sales for custom pricing and SLA terms. Soniox: Paid. Soniox is a paid API platform. Pricing is usage-based rather than a fixed consumer subscription, with plans and rates listed on its pricing page. There is no free consumer tier, so budget depends on your speech-processing volume and model choice.

## Alternatives

| # | Tool Name | Monthly Visits | MoM Growth Rate | Pricing Model | Summary | Profile (Markdown) |
| :--- | :--- | :--- | :--- | :--- | :--- | :--- |
| 1 | [OpenAI Platform](https://openaitools.app/tool/openai) | 234,678,639 | -9.6% | Paid | Provides Whisper via API for robust speech-to-text, but lacks specialized real-time streaming audio intelligence pipelines. | [.md](https://openaitools.app/tool/openai.md) |
| 2 | [ElevenLabs](https://openaitools.app/tool/elevenlabs-io) | 42,396,771 | +26.1% | Freemium, Paid, Contact for Pricing | Industry leader for high-fidelity speech synthesis and voice cloning, though less focused on raw streaming STT infrastructure. | [.md](https://openaitools.app/tool/elevenlabs-io.md) |
| 3 | [Fish Audio](https://openaitools.app/tool/fish-speech) | 8,557,159 | +1.6% | Freemium | Open-source voice platform offering studio-grade text-to-speech and instant cloning, suitable for self-hosting deployments. | [.md](https://openaitools.app/tool/fish-speech.md) |
| 4 | [MiniMax Audio](https://openaitools.app/tool/minimax-audio) | 5,253,734 | -13.2% | Contact for Pricing | Provides expressive multilingual text-to-speech and voice cloning APIs with strong performance across global languages. | [.md](https://openaitools.app/tool/minimax-audio.md) |
| 5 | [Cartesia](https://openaitools.app/tool/cartesia-ai) | 1,782,707 | +49.7% | Contact for Pricing | Delivers extremely low-latency real-time text-to-speech and streaming transcription APIs tailored for conversational agents. | [.md](https://openaitools.app/tool/cartesia-ai.md) |
| 6 | [Deepgram Voice AI](https://openaitools.app/tool/deepgram-voice-ai) | 863,852 | +31.8% | Free Trial | Provides ultra-fast real-time speech-to-text and voice AI APIs, but with less emphasis on integrated translation. | [.md](https://openaitools.app/tool/deepgram-voice-ai.md) |
| 7 | [Salad Transcription API](https://openaitools.app/tool/salad-transcription-api) | 713,519 | +10.4% | Free Trial, Paid | Offers cost-effective batch transcription APIs powered by distributed cloud hardware rather than dedicated streaming infrastructure. | [.md](https://openaitools.app/tool/salad-transcription-api.md) |
| 8 | [Vapi](https://openaitools.app/tool/vapi) | 662,301 | -11.4% | Freemium | Specialises in orchestrating conversational voice agents and telephony integrations rather than standalone speech APIs. | [.md](https://openaitools.app/tool/vapi.md) |
| 9 | [AssemblyAI](https://openaitools.app/tool/assemblyai) | 453,591 | -6.9% | Freemium, Contact for Pricing | Offers highly accurate speech-to-text transcription and audio intelligence APIs, though lacking native voice cloning features. | [.md](https://openaitools.app/tool/assemblyai.md) |
| 10 | [Noiz AI](https://openaitools.app/tool/noiz-ai) | 441,445 | -30.1% | Paid | Specialises in emotional text-to-speech generation and multilingual video dubbing, but less robust for raw transcription pipelines. | [.md](https://openaitools.app/tool/noiz-ai.md) |

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Source: https://openaitools.app/compare/gladia-vs-soniox

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