Pulse Pro
Model: Pulse Pro · smallest.ai
—
Response time · transcription only
Smallest AI's Pulse is a real-time speech-to-text API delivering ~64ms time-to-first-token and 5.42% average WER (#2 on the Open ASR Leaderboard) across 30+ languages. Gladia bundles transcription with audio-intelligence add-ons, but Pulse is the stronger choice when raw accuracy and low-latency streaming for voice agents come first.
Gladia
Model: Solaria
—
Response time · transcription only
Pulse Speech-to-Text
Real-time transcription with industry-leading accuracy and ~64ms time-to-first-token, built for live voice agents.
30+ Languages
Accurate transcription across 30+ languages, with native English performance ranked #2 on the Open ASR Leaderboard.
Enterprise-Grade Compliance
SOC 2 Type II, GDPR, ISO 27001, and HIPAA-ready — with a Business Associate Agreement available for healthcare deployments.
Features
Benchmarks
Benchmark
▼
WER % on the Hugging Face ESB benchmark (9 English datasets, streaming). Lower is better. Pulse is competitive on aggregate and leads on meeting/noisy audio; AssemblyAI leads on clean read speech. Source: HF ESB, internal evaluation.
Frequently
asked questions
Can Pulse STT run on-premise?
Is Gladia good for real-time voice agents?
How does Pulse STT's latency compare to Gladia Solaria-1?
What does switching from Gladia to Pulse STT involve?