# Gladia vs Gradium Gladia records 232,451 monthly visits with +6.4% month-over-month growth and Freemium, Contact for Pricing pricing. Gradium records 126,416 monthly visits with +128.7% growth and Freemium, Contact for Pricing pricing. | Metric | [Gladia](https://openaitools.app/tool/gladia) | [Gradium](https://openaitools.app/tool/gradium) | | :--- | :--- | :--- | | Website URL | https://www.gladia.io | https://gradium.ai | | Categories | AI Speech-to-Text, AI API, AI Transcription, Audio To Text AI | AI Text-to-Speech, AI Speech-to-Text, AI Voice Cloning, AI API | | Pricing Model | Freemium, Contact for Pricing | Freemium, Contact for Pricing | | Monthly Visits | 232,451 | 126,416 | | MoM Growth Rate | +6.4% | +128.7% | | Primary Market | Brazil | France | | Direct Visits | 128,515 | 27,158 | | 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) ## Gradium Gradium targets teams building conversational voice agents, telephony bots, and real-time translation experiences where latency decides whether a product feels natural. Its model lineup covers the full loop: text-to-speech for synthesis, speech-to-text for transcription, live voice-to-voice translation, instant cloning from a short audio sample, pro cloning for production-grade custom voices, and voice design that creates a brand-new voice from a text description alone. The platform is API-first, with SDKs for Python and Rust, WebSocket streaming, semantic voice activity detection, custom vocabularies, code-switching support, and integrations such as LiveKit and Pipecat so teams can drop it into existing agent stacks. Gradium also ships Phonon, an open on-device TTS model that can run offline, which matters for privacy-sensitive or embedded deployments. Pricing is credit-based across five self-serve tiers plus enterprise. Credits map to usage: text-to-speech costs 1 credit per character, speech-to-text 3 credits per second, speech-to-text translation 4 credits per second, and speech-to-speech translation 30 credits per second. Higher tiers unlock commercial use, more custom voices, pro clones, and better concurrency, while enterprise adds dedicated inference, on-premises deployment, and options such as Baseten or SageMaker endpoints. **Pricing & Plans:** Free tier with 45k credits per month. Paid plans run $12/mo (XS), $39/mo (S), $312/mo (M), and $1,480/mo (L) on monthly billing, with yearly billing giving one month free. Usage is credit-based (1 credit per TTS character, 3 credits per STT second, 30 credits per second for speech-to-speech translation). Enterprise pricing is custom. - **Ultra-low-latency voice models:** Text-to-speech, speech-to-text, and live speech-to-speech translation reach roughly 50 ms to first audio, tuned for conversational agents rather than batch processing. - **Tiered voice cloning and voice design:** Clone a voice from a short sample for everyday use, move up to pro cloning for production quality, or generate a brand-new voice from a text description. - **Developer-first API and SDKs:** WebSocket streaming, Python and Rust SDKs, custom vocabulary, semantic VAD, and code-switching support make integration straightforward for agent builders. - **Open on-device TTS with Phonon:** Phonon is Gradium's openly available TTS model that runs on-device for offline or privacy-sensitive deployments. - **Scaling and deployment options:** Gradium handles concurrency tiers for growing traffic and supports dedicated inference, on-premises deployment, and Baseten or SageMaker endpoint hosting. **Strengths:** Very low latency tuned specifically for live voice agents rather than offline batch jobs; Full voice stack in one API: TTS, STT, translation, cloning, and voice design; Genuine free tier (45k credits/month) and low $12/mo entry point for prototyping; Enterprise-grade options including on-premises deployment, data residency, and an open on-device TTS model **Limitations:** Credit-based pricing is harder to forecast than flat per-seat plans, and unused plan credits expire monthly; Pro voice cloning and higher concurrency sit behind the larger monthly tiers; Feature depth varies by plan, so commercial use requires at least the XS tier [Profile (Markdown)](https://openaitools.app/tool/gradium.md) ## Frequently Asked Questions ### How do Gladia and Gradium compare in monthly traffic? Gladia has 232,451 monthly visits, while Gradium has 126,416. 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%; Gradium has +128.7%. ### 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. Gradium: Freemium, Contact for Pricing. Free tier with 45k credits per month. Paid plans run $12/mo (XS), $39/mo (S), $312/mo (M), and $1,480/mo (L) on monthly billing, with yearly billing giving one month free. Usage is credit-based (1 credit per TTS character, 3 credits per STT second, 30 credits per second for speech-to-speech translation). Enterprise pricing is custom. ## 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 | AI audio platform for speech, agents, music and dubbing | [.md](https://openaitools.app/tool/elevenlabs-io.md) | | 3 | [Fish Audio](https://openaitools.app/tool/fish-speech) | 8,557,159 | +1.6% | Freemium | Studio-grade AI text to speech and voice cloning | [.md](https://openaitools.app/tool/fish-speech.md) | | 4 | [Groq](https://openaitools.app/tool/groq) | 3,987,936 | +10% | Paid | Ultra-fast AI inference on the LPU and LPX platform | [.md](https://openaitools.app/tool/groq.md) | | 5 | [Cartesia](https://openaitools.app/tool/cartesia-ai) | 1,782,707 | +49.7% | Contact for Pricing | Real-time voice AI models and agents you can build on | [.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 | Real-time speech-to-text, text-to-speech and voice agents in one API platform | [.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 | Build, test, and deploy production-grade voice AI agents over API | [.md](https://openaitools.app/tool/vapi.md) | | 9 | [AssemblyAI](https://openaitools.app/tool/assemblyai) | 453,591 | -6.9% | Freemium, Contact for Pricing | Delivers comprehensive audio intelligence and transcription APIs, though Gladia often excels at speed and multilingual support. | [.md](https://openaitools.app/tool/assemblyai.md) | | 10 | [Noiz AI](https://openaitools.app/tool/noiz-ai) | 441,445 | -30.1% | Paid | Clone voice, control emotion, and create lifelike speech. | [.md](https://openaitools.app/tool/noiz-ai.md) | --- Source: https://openaitools.app/compare/gladia-vs-gradium More Markdown: [Categories](https://openaitools.app/categories.md) · [Traffic rankings](https://openaitools.app/rankings.md) · [llms.txt](https://openaitools.app/llms.txt)