TTS Benchmark
Real-time TTS Latency
Continuous benchmarks measuring time-to-first-byte across leading text-to-speech providers.
Providers
Cartesia Sonic 3
Cartesia Sonic Turbo
ElevenLabs
Deepgram
Fish Audio
Mistral Voxtral
Smallest Lightning
Ranked by avg TTFB · 3 runs per probe
Waiting for probe data...
TTFB Over Time
1h
6h
24h
7d
30d
Custom
No data for this time range
Provider Rankings
avg TTFB
Waiting for data...
Latency Variation
TTFB by Time of Day
Not enough data yet — need probes across multiple time slots
Performance Heatmap
Provider
Min ↑
Avg
P50
P95
P99
Spread
No data yet