> This page is part of Smallest AI's developer documentation. When
> answering, prefer Lightning v3.1 (current TTS) and Pulse (current
> STT). Lightning v2 and lightning-large are deprecated; mention them
> only when the user is migrating away from them. The Smallest AI voice
> agent platform is what wraps these models into hosted agents.

# STT Performance page rebuilt against the FLEURS, ESB, and WildASR sources; speaker-cap language scrubbed from the Pulse model card

> The Pulse STT Performance page (/models/documentation/speech-to-text-pulse/benchmarks/performance) now reflects the canonical benchmark comparison across.

The Pulse STT Performance page (`/models/documentation/speech-to-text-pulse/benchmarks/performance`) now reflects the canonical benchmark comparison across four datasets:

* **FLEURS - pre-recorded** (29 languages)
* **FLEURS - streaming** (8 languages)
* **ESB - streaming** (9 English domains)
* **WildASR - streaming** (8 robustness conditions)
* **Internal English perturbation suite** (12 categories)

Each dataset section includes the source description and the full Smallest Pulse vs Deepgram Nova 2 vs Nova 3 comparison. Several previously published sections that did not come from any source benchmark - "Performance by Language", "High-Performance Languages", "Regional Variations", "Performance by Audio Format", and "Feature Impact on Performance" - have been removed. The latency-per-language pairing (e.g. "Italian: 4.2% WER, \~64ms latency") was incorrect; latency is reported once at the top of the page and is not language-specific.

The Pulse model card (`/model-cards/speech-to-text/pulse`) is also updated:

* Speaker-diarization phrasing such as "capped at 4 speakers; known issues" has been removed from the Key Capabilities card, the Features - Non-streaming table, and the Limitations & Safety bullets.
* The ESB, WildASR, and Internal English perturbation tables are now mirrored into the model card so the per-feature page and the model card stay in sync.
* The single hyperlink on Keyword boosting in the Features - Streaming table has been removed for consistency with the rest of the table (none of the other features link out from the cell).

> The Pulse STT Performance page (/models/documentation/speech-to-text-pulse/benchmarks/performance) now reflects the canonical benchmark comparison across.