Best for
Best for developers who need accurate transcription, speech insights or voice agents behind a pay-as-you-go API.
- Small and mid-sized
- Enterprise
AI Voice & Speech Comparison
AssemblyAI vs. Voicemod
At a glance
At a glance
Best for
Best for streamers, gamers and creators who need the voice changed live in the call rather than rendered into a file.
- Freelancers
Cataleo does not name a winner. Both statements come from the vendors themselves.
Full Comparison
| Criterion | AssemblyAI | Voicemod |
|---|---|---|
| Starting price | From $0.15 / hour of audio Pay-as-you-go, no subscription tiers. Pre-recorded speech-to-text is $0.15 / hour on Universal-2 and $0.21 / hour on Universal-3.5 Pro; streaming is $0.15 / hour on Universal-Streaming and $0.45 / hour on Universal-3.5 Pro Realtime; the Voice Agent API is $4.50 / hour, billed per second of connected conversation. Add-ons such as speaker diarization ($0.02 / hour) and medical mode ($0.15 / hour) are charged on top. | Not stated |
| Free trial | $50 in free credits, no credit card required, covering up to 185 hours of pre-recorded or 333 hours of streaming transcription | Free version for Windows and Mac |
| Commercial use | Yes, usage-based | Not stated |
| Output | Transcripts, structured speech insights and live voice agent conversations | A changed voice delivered live through a virtual microphone, plus soundboard clips and recordings |
| API | Yes, REST APIs and SDKs | Yes, a Control API with an API key and bindings for Unity, JavaScript, C/C++ and Java |
| Hosting | Not stated | Desktop application for Windows and Mac, a mobile soundboard app, and the Voicemod Key device for consoles |
| Voice cloning | No, the platform covers speech recognition and voice agents rather than voice creation | No. Voicelab builds a voice by layering more than 140 effects over your own, and the vendor publishes no way to reproduce a specific person's voice |
| Real-time use | Yes, streaming speech-to-text and a Voice Agent API, alongside batch transcription of pre-recorded files | Yes, and it is the whole product: a virtual microphone changes the voice live in Discord, OBS, Fortnite, Valorant, Minecraft, League of Legends and more than 30 other applications |
| Languages | 99 languages for pre-recorded audio on Universal-2, 18 on Universal-3.5 Pro; six on Universal-Streaming Multilingual and 18 on Universal-3.5 Pro Realtime; translation across 100+ languages | No published language list. The vendor states the AI voices were built from data recorded by English-speaking voice actors, so English gives the best results, and that other languages can still work but the AI may have difficulty with some of their sounds and articulations |
| Speech-to-speech and dubbing | Yes, the Voice Agent API runs speech-to-speech conversations by orchestrating speech-to-text, an LLM and text-to-speech at one all-inclusive rate | Real-time voice changing transforms your own speech into another voice; no dubbing or translation is published |
| Editing and controls | Speaker identification, diarization, custom formatting, key phrase extraction and guardrails for PII redaction, profanity filtering and content moderation | Over 200 AI voices, Voicelab for building or remixing voices from more than 140 effects including pitch, tone, Reverb, Delay and Robotifier, plus a soundboard with keybinds, a recorder for YouTube and in-game audio and a 30-second instant replay |
| Consent and trust | SOC 2 Type 2, ISO 27001, PCI-DSS and a HIPAA BAA included at no premium; EU region available at identical US pricing for GDPR | The vendor states its AI voices are trained by professional voice actors and carry a Fairly Trained certification |
| MCP-ready | stated Yes | No |
| Deployment | more entries Cloud (SaaS), Browser-based | On-premise |
| Support | Not stated | Email helpdesk |
| Onboarding | Documentation and knowledge base | Documentation and knowledge base |
| Company size | more entries Small and mid-sized, Enterprise | Freelancers |
| Integrations | Not stated | Discord, OBS, Fortnite, Valorant, Minecraft, League of Legends, Elgato, Corsair, Razer, MSI, Qualcomm |
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The short version
Key Differences
- Free trial AssemblyAI $50 in free credits, no credit card required, covering up to 185 hours of pre-recorded or 333 hours of streaming transcription Voicemod Free version for Windows and Mac
- Deployment AssemblyAI Cloud (SaaS), Browser-based Voicemod On-premise
- Company size AssemblyAI Small and mid-sized, Enterprise Voicemod Freelancers
- MCP-ready AssemblyAI Yes Voicemod No
- Output AssemblyAI Transcripts, structured speech insights and live voice agent conversations Voicemod A changed voice delivered live through a virtual microphone, plus soundboard clips and recordings
Every line is one datapoint from the table above, picked automatically. Nothing here is written text.
The trade-offs
Strengths and Limitations
AssemblyAI
Strengths
- Pay-as-you-go with no subscription and $50 in free credits to start
- 99 languages for pre-recorded transcription on Universal-2
- Compliance certifications and an EU region at no price premium
- Official MCP server exposes transcription and transcript search to AI agents
Limitations
- A developer API, not a ready-made studio or editor
- No voice cloning or voice creation
- Speech Understanding add-ons are billed on top of the base rate, so cost stacks per request
- Streaming is billed for as long as the connection stays open, not for the audio sent, and multichannel files are billed per channel
- Universal-3.5 Pro covers 18 languages against 99 on the older Universal-2
Voicemod
Strengths
- Works live in more than 30 games and applications through a virtual microphone
- Voicelab builds custom voices from over 140 effects and publishes them to the community
- Control API drives the app from Unity, JavaScript, C/C++ or Java
- AI voices are trained with professional voice actors under a Fairly Trained certification
- Free version for Windows and Mac
Limitations
- No voice cloning: Voicelab shapes effects rather than reproducing a specific person's voice
- Plan amounts are not published on the site
- Built around gaming, streaming and chat applications rather than rendered audio files
Plans
Pricing
AssemblyAI
- Pay-as-you-go From $0.15 / hour No subscription. Pre-recorded transcription $0.15 / hour on Universal-2 and $0.21 / hour on Universal-3.5 Pro, streaming $0.15 / hour on Universal-Streaming and $0.45 / hour on Universal-3.5 Pro Realtime, Voice Agent API $4.50 / hour. Add-ons are billed on top: speaker diarization $0.02 / hour, medical mode $0.15 / hour, keyterms prompting $0.05 / hour on Universal-3.5 Pro and included on Universal-2. Free accounts get 5 new streams per minute, pay-as-you-go accounts 100.
- Custom Not stated Contact sales for custom rate limits, higher concurrency and volume discounts. HIPAA BAA, PCI-DSS, ISO 27001 and SOC 2 Type 2 compliance at no premium, and an EU region at identical US pricing.
Voicemod
- Free Not stated
- Pro Not stated
What users say
Review Scores · opens after launch
AssemblyAI
- Ease of use
- Not rated yet
- User interface
- Not rated yet
- Onboarding
- Not rated yet
- Support and service
- Not rated yet
- Value for money
- Not rated yet
- Features
- Not rated yet
No reviews yet. Be the first to review this tool. Every review is checked for fairness before it appears, and the vendor cannot have one removed.
Voicemod
- Ease of use
- Not rated yet
- User interface
- Not rated yet
- Onboarding
- Not rated yet
- Support and service
- Not rated yet
- Value for money
- Not rated yet
- Features
- Not rated yet
No reviews yet. Be the first to review this tool. Every review is checked for fairness before it appears, and the vendor cannot have one removed.
Where this comes from
Where this comes from
AssemblyAI https://www.assemblyai.com · checked against the official source on 2026-08-30
Voicemod https://www.voicemod.net · checked against the official source on 2026-09-12
This table lists factual criteria taken from information the vendors publish themselves. For how we put it together, see the methodology.