Benchmarks12 min read
Coval TTS benchmark: Gepard vs 25 APIs
We ran Gepard 1.0 through Coval's public TTS harness against its 25 listed APIs. 68.7 ms to first audio, 20.5 ms of leading silence, 0 errors in 30 samples.
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Reproducible measurements of text-to-speech latency, accuracy and audio quality, including metrics no other vendor publishes.
Benchmarks5 min read
TTS latency benchmark: 50 ms to first audio
Four vendors, both transports, 240 measured calls, zero errors. Gepard returns first audio in 49 to 50 ms over WebSocket, about half the next fastest.
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Benchmarks6 min read
TTS API pricing in 2026: the real cost
Ten realtime voice vendors in one table. ElevenLabs Flash is $50 per million characters, Cartesia $30, ours $5. Here is what that means on your monthly bill.
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