Brainiall Voice (Pro tier)
Premium voice synthesis with zero-shot cloning, emotional control, and 99-language coverage. Studio-quality 48 kHz output. Sub-500 ms TTFT for real-time voice agents. Up to 70% cheaper than ElevenLabs Multilingual v2 at parity quality.
Two tiers, one API surface
Brainiall Voice ships as a single endpoint with two quality tiers selected per request via the tier parameter. Default is edge (12 English voices, 24 kHz, ~150 ms latency). Set tier="pro" for cloning, emotional control, 99 languages, and 48 kHz studio output — charged only on requests that opt in.
Edge tier (default)
12 curated English voices, 24 kHz mono, ~150 ms TTFT. CPU-friendly inference, the cheapest production-quality voice on the market. Drop-in for in-app TTS, IVR, alerts.
Pro tier (premium)
Zero-shot voice cloning, emotional control, 99 languages, 48 kHz studio output. ~500 ms TTFT with streaming chunks. Drop-in for audiobooks, branded voices, dubbing, voice agents.
Pro-tier capabilities
Zero-shot voice cloning
Send a 5-second WAV/MP3 reference. We return a stable voice ID you can reuse across every subsequent request. No per-clone training fee. No fine-tuning step.
Emotional + style control
Specify mood (calm, excited, sad, whisper, sarcastic) and pacing (slow, normal, fast) per request. Apply via SSML tags or the JSON `style` parameter.
99 languages, native accent
Same voice identity preserved across English, Portuguese, Spanish, French, German, Italian, Japanese, Korean, Mandarin, Arabic, Hindi, and 88 more — with native prosody.
Studio quality 48 kHz output
True 48 kHz/24-bit PCM output. No upsampling tricks. Drop directly into a DAW, podcast publisher, or game engine without a quality-loss step.
Streaming generation
Audio chunks emit as they're generated, not after the full text completes. Sub-500 ms TTFT for real-time voice agents.
SSML support
`<break>`, `<emphasis>`, `<prosody>`, `<phoneme>` for fine-grained control. Drop-in for projects already using Azure or AWS SSML.
Use cases
Audiobook + podcast production
Long-form narration at studio quality with consistent voice across hours of content. Emotional control lets a single narrator voice carry character dialogue, moods, and pacing — without paying a per-character premium.
Custom brand voices (zero-shot cloning)
Upload a 5-second reference clip from your spokesperson, founder, or licensed voice actor. The clone is generated in a single request and reused across every API call — no fine-tuning step, no studio recording session, no training fee.
Multilingual content + dubbing
Same voice identity across 99 languages. A single brand voice speaks English on the US site, Portuguese in Brazil, Japanese for the launch in Tokyo. Cross-lingual synthesis with native accent and prosody.
Conversational voice agents (low latency)
Sub-500 ms time-to-first-byte with streaming chunks. Pair with our Speech (Pro tier) for STT and any LLM for full voice-agent stacks. End-to-end latency budget of ~1.2 s achievable for natural turn-taking.
Game character VO + interactive narrative
Hundreds of NPCs, each with distinct voice and emotion, generated on demand at runtime. Eliminates the studio booking + voice-actor session cost spiral that has historically blocked indie developers from professional voice acting.
How we compare
Independent voice-quality benchmarks across English, Portuguese, Japanese, and Mandarin samples, scored on naturalness (MOS) and brand-consistency. Pricing measured in USD per 1 000 characters.
| Provider | Quality | Price/1K characters | vs market avg | Position |
|---|---|---|---|---|
| ElevenLabs Multilingual v2 | 9.6/10 | $0.180 | 219% | — |
| OpenAI gpt-4o-mini-tts | 8.8/10 | $0.060 | 73% | — |
| Cartesia Sonic 2 | 9.2/10 | $0.065 | 79% | — |
| Resemble AI | 8.5/10 | $0.090 | 109% | — |
| Azure Neural TTS | 8.4/10 | $0.016 | 19% | — |
| Brainiall EDGE | 8.0/10 | $0.015(82% cheaper) | 18% | Parity |
| Brainiall PRO | 9.4/10 | $0.054(34% cheaper) | 66% | Parity |
Pricing rule: 90% off when inferior · 80% off at parity · 50% off when superior. Position determined by objective benchmark, refreshed quarterly.
Quickstart — clone a voice in two requests
# 1. Create a voice clone from a 5-second reference
curl -X POST https://api.brainiall.com/v1/voice/clones \
-H "Authorization: Bearer $BRAINIALL_KEY" \
-F "name=brand_founder" \
-F "audio=@reference_5s.wav"
# → { "voice_id": "vc_a3f9...", "name": "brand_founder", "ready": true }
# 2. Synthesize with the cloned voice + emotional control
curl -X POST https://api.brainiall.com/v1/tts/synthesize \
-H "Authorization: Bearer $BRAINIALL_KEY" \
-H "Content-Type: application/json" \
-d '{
"text": "Welcome to our 2026 product launch.",
"voice": "vc_a3f9...",
"tier": "pro",
"language": "en",
"style": "excited",
"format": "wav_48khz"
}' \
--output launch.wavHonesty section — what Pro tier does NOT do
- Singing or musical performance. Pro tier targets natural speech. Pitch control via SSML
<prosody>is supported, but not melodic singing. - Real-time sub-100 ms TTFT. Pro tier streams chunks at ~500 ms TTFT. For agent use cases needing <200 ms first audio frame, use Edge tier (~150 ms TTFT).
- Voice cloning of public figures or copyrighted voices. Voice clones require written consent of the source speaker (verified via attestation form during clone creation). Voices of public figures, deceased persons without estate consent, and characters from copyrighted media are blocked at the moderation layer.
- 100% factual emotional inference. The
styleparameter is a directive, not a guarantee — extreme states (terror, ecstasy) lean toward subdued naturalistic interpretations to avoid uncanny output.
Pricing
Edge tier
per 1K characters · 12 English voices · 24 kHz · ~150 ms TTFT
Pro tier
per 1K characters · cloning + emotional control · 99 languages · 48 kHz · ~500 ms TTFT
Voice clone
flat fee per clone · stored 90 days · unlimited synthesis from each clone
Volume tier
10M+ characters/month · dedicated rate · multi-region SLA · sales@brainiall.com