Deepgram Aura is built for low-latency, real-time voice agents and pairs naturally with Deepgram's speech-to-text. SpeechifyAI offers <100ms median streaming time to first byte and $6 per 1M additional characters on the $499/month Scale plan, below both Aura tiers.
| Capability | SpeechifyAI | Deepgram Aura |
|---|---|---|
| Price (per 1M chars) | $6 / 1M additional usage on $499/month Scale | Aura-1 $15, Aura-2 $30 |
| Pricing model | Per character; no credits, no token math | Per character, by model generation |
| Voice quality | Proprietary neural voice models | Natural and conversational; tuned for real-time agent use |
| Voices | Model-compatible catalog; filter GET /v1/voices by each voice's models[] | A smaller curated set |
| Languages | 6 languages across 7 locales self-serve; 48 through our team | Primarily English-focused; fewer languages |
| Voice cloning | Instant zero-shot cloning on Starter and above; fine-tuned voices by sales arrangement | No general-purpose voice cloning |
| Latency | 56 ms p50 first byte on Simba 3.2, streaming, measured 15 Sep 2026 | Very low latency; a core strength |
| Commercial use / free tier | Commercial use on every plan; 500K chars/month free | Commercial use; $200 in free credit to start |
Deepgram Aura is built for real-time voice agents, with Aura-2 at $30 per million characters and Aura-1 at $15. The model is genuinely good for live conversation. SpeechifyAI is $6 per 1M additional characters on the $499/month Scale plan with <100ms median streaming time to first byte and 6 languages across 7 locales self-serve; 48 through our team. Use GET /v1/voices and each voice's models[] to build a model-compatible catalog.
Aura does not offer general voice cloning. SpeechifyAI does, included on Starter and above, with instant zero-shot creation from a short sample. Cloned-voice synthesis uses the selected plan's per-character rate and the same streaming endpoint, so a team that wants both the real-time conversational profile and a custom brand voice can ship both from one API.
SpeechifyAI covers real-time conversational TTS with <100ms median streaming time to first byte, a model-compatible voice catalog, 6 languages across 7 locales self-serve; 48 through our team, and instant zero-shot cloning on Starter and above. Scale additional usage is $6 per 1M additional characters on the $499/month Scale plan.
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