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Brainiall
Voice & Pronunciation Engine for Language Apps

Phone-level pronunciation scoring
that exceeds human raters.

Phone-level scoring with PCC 0.682 — exceeding trained human rater consensus (0.555). Sub-second p50 latency, sovereign bare-metal inference, and compatible with the standard API contract your team already uses.

Live Interactive Demo
Overall Score86/100
Phone PCC0.682 (vs 0.555 human)
Latency p50138ms
Input Signal & Time-Aligned Phonemes
Phoneme Breakdown (IPA): She sells seashells by the seashoreClick any word to isolate
/ʃ/SH96
/iː/IY94
/s/S91
/ɛ/EH88
/l/L89
/z/Z88
/s/S90
/iː/IY86
/ʃ/SH58
/ɛ/EH82
/l/L79
/z/Z75
/b/B98
/aɪ/AY98
/ð/DH90
/ə/AH94
/s/S89
/iː/IY86
/ʃ/SH71
/ɔː/AO92
/r/R85
Exceeds trained human rater consistency in blinded benchmark studies
Founder’s published case study · industrial AI (Brasil Mineral, 2024)Brasil Mineral Magazine · #441 · Jul 2024
“We were expecting 2-3% gains. Brainiall delivered +6% throughput in 25 days — that’s $781K annual margin uplift on a single beneficiation line.”
Lead Process Engineer · Gold mining operationSee the published benchmarks behind these numbers →
curl -X POST https://api.brainiall.com/v1/nlp/toxicity \
  -H "Authorization: Bearer YOUR_KEY" \
  -H "Content-Type: application/json" \
  -d '{"text":"Seller asks for a refund and includes contact details."}'

// → { "label": "low_risk", "score": 0.04, "route": "review" }
Two paths, one platform

Where do you want to start?

For engineering teams

Ship faster than your AWS-stack neighbors.

One Bearer key across 19 specialty APIs. OpenAI-compatible request/response — drop into your existing OpenAI SDK in 3 lines. WebSocket streaming STT, sub-second p50, public p99 page. PII redaction and SOC 2 already baked in.

For procurement & decision makers

Defensible benchmarks. Predictable bill.

Every quality claim links to a published leaderboard (standard clean-speech, TTS-quality, pronunciation-scoring, and embedding-retrieval benchmarks). Honest pricing rule: 90% off when we're inferior, 80% at parity, 50% when superior. SOC 2 controls implemented (Type II audit targeted Q3 2026), GDPR + LGPD compliant, EU + US data residency on request.

Try it now — no signup

Preview the workflow. Read the JSON.

Run safe public samples through Brainiall's API surface. When ready, grab a key and run authenticated calls against your own data.

Review and dispute routing

POST /v1/nlp/toxicity + /v1/nlp/pii
Response (JSON)
// Click the button to see the response…
Why Brainiall

Built for production

Sub-second p50

Latency-optimized bare-metal inference per SKU. p50 / p95 / p99 published in real time on the public status page — same numbers your SRE team will measure.

One SDK. Every product.

Standardized request/response across all specialist engines. Same Bearer key, consistent headers, and standard Python and TypeScript SDKs.

High-accuracy specialist engines

Pronunciation with Phone PCC 0.682, speech recognition with WER 2.7%, speaker diarization with DER 9.0%, natural voice synthesis, and multilingual safety checks.

Regulated-ready

SOC 2 controls implemented (Type II audit targeted Q3 2026), GDPR + LGPD compliant, EU + US sovereign bare-metal hosting. PII redaction baked into speech and NLP outputs.

Honest pricing rule

Transparent pricing derived from public benchmarks. Transparent tiers with zero monthly floor and audit-ready volume discounting.

Self-serve from minute 1

Create your API key in seconds, run live evaluations in the playground, and deploy to production without mandatory sales calls.

Cost calculator

How much would you save vs your current vendor?

Real list prices, no marketing math. Move the slider, pick your SKU.

AWS Transcribe

$1,440

$1.44 per hour of audio

Brainiall Speech Pro

$300

$0.300 per hour of audio · WER 2.7% (parity)

You save$1,14079% less

Brainiall list prices. AWS Transcribe from public docs as of May 2026. Excludes hosting/storage. WER 2.7% (parity).

Start building in 30 seconds

Integrate the most consistent pronunciation API in the market. Create your key and start testing in production.

Brainiall Developer Portal