CekuraBench

Inworld TTS-2 Flash

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The best of 26 voices at starting to talk fast

Non-streaming latency (median): 46 ms

  • Also strong at
  • Reads numbers and shorthand rightTied best of 26 · 93%
  • Reads hard parts right2nd of 26 · 93.2%

Inworld TTS-2 Flash: the best of 26 voices at starting to talk fast. Its weakest is medical terms, tied 12th of 26.

Last updated Methodology by Dileep Chagam

Inworld TTS-2 Flash at a glance

Where it ranks among all 26 voices, in plain words.

Good at
  • Starts talking fastBest of 26
  • Reads numbers and shorthand rightTied best of 26
  • Reads hard parts right2nd of 26
  • Fast with streamed text2nd of 18
  • Low priceTied 2nd of 25
  • Sounds naturalTied 5th of 26
Not so good at

Nothing in the bottom quarter of the voices.

Hear Inworld TTS-2 Flash

The first read of each test sentence, unedited.

Inworld TTS-2 Flash

Inworld TTS-2 Flash head to head

Pick any voice to set against it. Every pair has its own page.

Compare
MeasureInworld TTS-2 FlashGradium TTS
  1. Non-streaming46 ms76 ms
  2. Streaming45 ms−64 ms
  3. StoppingNo stop messageNo stop message
  4. Accuracy93.2%79.5%
  5. Naturalness4.464.51
  6. Price / 1M$15.00$36.00
  7. Measures won3 of 62 of 6
The check marks the better value on each measure. Every pair has its own page with the full numbers.Open this pair · 325 pairs in all

Its closest rivals on speed

Inworld TTS-2 Flash FAQ

  • Inworld TTS-2 Flash starts in 46 ms on a typical sentence (median) and 73 ms on the slowest 1 in 10 (p90), 1st of 26 voices.

  • Yes. With streamed text, Inworld TTS-2 Flash starts 45 ms after the last word arrives.

  • Inworld TTS-2 Flash has no stop message, so the agent has to close the connection to stop it.

  • Inworld TTS-2 Flash read 93.2% of the hard parts right, as speech-to-text heard it. Its weakest kind is codes and addresses, at 85.7%. This is an estimate, not a listening test.

  • Inworld TTS-2 Flash lists at $15.00 per million characters.