## Benchmark

Measure synthesis latency and real-time factor. Track trends across backends and voices over time.

## Run benchmark

Pick a backend and voice, set run count, then measure synthesis latency and real-time factor (RTF). RTF < 1.0 means the backend generates faster than real-time.

Backend
Voice
Runs
Sample text Hello, how are you today? Please read this sample clearly for a fair voice benchmark.

## Results

Latency per run. RTF = synthesis time ÷ audio duration (lower is better, <1.0 is real-time capable).

vs. previous session:

# | Backend | Voice | Latency (ms) | Audio (s) | RTF | Status
--- | --- | --- | --- | --- | --- | ---

## Batch benchmark

Benchmark multiple voices in one run. Pre-populated from your active My Voices — or reload from the backend. Results are sorted fastest first and saved to History.

Backend
Runs per voice

Uses the sample text from the single-voice form above.

Benchmarking…

## Batch results

Sorted fastest RTF first. Green = real-time capable (<1.0). Trend compares to the previous session for each voice.

Voice | Avg latency | Best | Audio (s) | Avg RTF | Status
--- | --- | --- | --- | --- | ---

## History

Last 50 benchmark sessions saved in your browser. Each row is one run session — click the backend/voice to pre-fill the form above.

Show current backend & voice only
No benchmark history yet. Run a benchmark above to start tracking.