# Gradium vs HaloVoice

Gradium records 126,416 monthly visits with +128.7% month-over-month growth and Freemium, Contact for Pricing pricing. HaloVoice records 811 monthly visits with 0% growth and Freemium, Contact for Pricing pricing.

| Metric | [Gradium](https://openaitools.app/tool/gradium) | [HaloVoice](https://openaitools.app/tool/halovoice) |
| :--- | :--- | :--- |
| Website URL | https://gradium.ai | https://www.halovoice.app |
| Categories | AI Text-to-Speech, AI Speech-to-Text, AI Voice Cloning, AI API | AI Voice Translator, AI Celebrity Voice Generator, AI Speech Recognition, AI Speech Synthesis |
| Pricing Model | Freemium, Contact for Pricing | Freemium, Contact for Pricing |
| Monthly Visits | 126,416 | 811 |
| MoM Growth Rate | +128.7% | 0% |
| Primary Market | France | Brazil |
| Direct Visits | 27,158 | 353 |
| Review Score | 4.5 | 4 |
| Saved Count | 0 | 0 |
| Supported Platforms | Website | Website |

## 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)

## HaloVoice

HaloVoice solves a specific problem that phone apps and pocket translators cannot: getting the translation into the conversation. It runs as desktop software that listens to your microphone, translates your speech in real time and outputs the translated voice as an audio device. In any app with a microphone selector — Discord, OBS, Zoom, Google Meet, Slack, Teams — you choose the HaloVoice virtual microphone as your input, and your audience hears the translation rather than your original voice. Latency is designed to stay low, typically under 200ms depending on device and network, which is what makes it usable for live voice chat rather than only recorded content.

Setup differs by platform. On Windows you install a client and pick your microphone and language pair inside it; on macOS you install a virtual audio driver and use a web console instead. System requirements are Windows 10 or 11 and Apple Silicon Macs running macOS 13 or later. The app supports over 30 languages including English, Spanish, French, German, Japanese, Korean and Mandarin, with source and target language chosen in the app, and it is optimised for long sessions so it does not noticeably cost FPS while gaming.

Pricing is straightforward. A free tier provides live captions and translation and works with OBS, Zoom and Discord with no credit card, while the Pro plan at $9.90 per month unlocks unlimited translation, all supported languages, priority processing and premium support. An Enterprise tier adds a dedicated server, API access, SLA, 24/7 support and SSO. There is a 60-second free trial on the site that lets you speak and immediately hear a translated voice, and guides cover use cases such as bilingual subtitles, meeting translation, voice cloning and streaming workflows.

**Pricing & Plans:** Free tier at $0/month with live captions and translation and support for OBS, Zoom and Discord, no credit card required. Pro costs $9.90/month for unlimited translation, all languages, priority processing, premium support and early access to features. Enterprise is custom priced and adds a dedicated server, API access, SLA, 24/7 support and SSO.

- **Low-latency voice translation:** Translates your speech into another language in real time with latency typically under 200ms, so conversations in voice chat stay natural rather than laggy.
- **Virtual microphone for any app:** Output is delivered as a virtual audio device, so OBS, Discord, Zoom, Steam, Google Meet, Slack and Teams can all use the translated voice as an input.
- **30+ supported languages:** English, Spanish, French, German, Japanese, Korean, Mandarin and many more, with source and target languages selected directly in the app.
- **Bilingual captions and subtitles:** Live captions accompany the translated audio, which is useful for streams and videos where viewers benefit from reading alongside listening.
- **Gaming-optimised performance:** Built to keep overhead low across long sessions so frame rates stay stable while you play and talk through the translator.

**Strengths:** Full output into the host app through a virtual microphone, not just a translated playback on your own device; Free tier covers live captions and translation with OBS, Zoom and Discord and needs no card; Over 30 languages with latency typically under 200ms keeps live conversation usable; Explicit Windows and Apple Silicon macOS support with separate install paths for each

**Limitations:** macOS requires installing a virtual audio driver and using a web console, which is a little more involved than the Windows client; Pro is required for unlimited translation and all languages, so heavy users will not stay on the free tier; Enterprise features such as API access, SSO and an SLA are only available through a sales conversation

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

## Frequently Asked Questions

### How do Gradium and HaloVoice compare in monthly traffic?

Gradium has 126,416 monthly visits, while HaloVoice has 811. Traffic estimates describe audience size, not product quality.

### How do their growth rates compare?

Gradium has a month-over-month growth rate of +128.7%; HaloVoice has 0%.

### How does pricing compare?

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. HaloVoice: Freemium, Contact for Pricing. Free tier at $0/month with live captions and translation and support for OBS, Zoom and Discord, no credit card required. Pro costs $9.90/month for unlimited translation, all languages, priority processing, premium support and early access to features. Enterprise is custom priced and adds a dedicated server, API access, SLA, 24/7 support and SSO.

## Alternatives

| # | Tool Name | Monthly Visits | MoM Growth Rate | Pricing Model | Summary | Profile (Markdown) |
| :--- | :--- | :--- | :--- | :--- | :--- | :--- |
| 1 | [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) |
| 2 | [TurboScribe](https://openaitools.app/tool/turboscribe-ai) | 27,661,771 | +2.1% | Freemium | Unlimited AI transcription of audio and video in 98+ languages | [.md](https://openaitools.app/tool/turboscribe-ai.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 | [Voicemod](https://openaitools.app/tool/voicemod) | 3,836,221 | -2.7% | Freemium | Real-time AI voice changer and soundboard for gaming and streaming | [.md](https://openaitools.app/tool/voicemod.md) |
| 6 | [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) |
| 7 | [Maestra AI](https://openaitools.app/tool/maestra-ai) | 1,340,377 | +0.7% | Free Trial, Subscription, Pay As You Go, Custom Enterprise | Live AI interpretation, transcription, subtitles and dubbing in 125+ languages | [.md](https://openaitools.app/tool/maestra-ai.md) |
| 8 | [Voice AI](https://openaitools.app/tool/voice-ai) | 1,017,577 | -14.9% | Freemium | Real-time AI voice changer, cloning and voice agents | [.md](https://openaitools.app/tool/voice-ai.md) |
| 9 | [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) |
| 10 | [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) |

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Source: https://openaitools.app/compare/gradium-vs-halovoice

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