Which should you pick?
Gemini 3.8 Flash TTS costs 2 credits (headline rate) and Inworld TTS 2 costs 2 credits (headline rate). One of the two does not publish what a full job costs, only a headline rate, so these two figures are not a like-for-like price comparison.
Gemini 3.8 Flash TTS holds the stronger leaderboard position (#5 in text to audio against #9 in text to audio). Those are two different leaderboards unless the category matches — Versely ranks each capability separately.
What a job costs
Gemini 3.8 Flash TTS
2 credits (headline rate)
It bills per 1,000 characters of input text.
- per 1,000 characters2 credits
Inworld TTS 2
2 credits (headline rate)
It bills per 1,000 characters of input text.
- per 1,000 characters2 credits
All figures are Versely credits. Your plan's credit allowance is on the pricing page.
Spec comparison
| Spec | Gemini 3.8 Flash TTS | Inworld TTS 2 |
|---|---|---|
| Provider | Inworld | |
| Cost per job | 2 credits (headline rate) | 2 credits (headline rate) |
| Billing | per 1,000 characters of input text | per 1,000 characters of input text |
| Max resolution | — | — |
| Aspect ratios | — | — |
| Durations | — | — |
| Frame rates | — | — |
| Qualities | — | — |
| Requires starting image | No | No |
| Accepts video input | No | No |
| Reference images | — | — |
| Leaderboard | #5 in text to audio | #9 in text to audio |
| Released | Sep 23, 2026 | May 5, 2026 |
What each one does that the other doesn't
Only Gemini 3.8 Flash TTS
style direction, audio tags, multi speaker, 30 voices
Only Inworld TTS 2
research preview, 100+ languages, style steering
Both list: text to audio, text to speech, expressive, multilingual.
Leaderboard positions
Versely ranks each capability on its own leaderboard, so a position is only comparable between two models within the same row.
Gemini 3.8 Flash TTS
- Text to audio#5
Inworld TTS 2
- Text to audio#9
Full Gemini 3.8 Flash TTS spec sheet →
Google Gemini 3.8 Flash TTS - Google's most expressive voice model: 30 voices, 130 languages, natural-language style direction, inline audio tags ([sigh], [laughs]) and two-speaker dialogue.
Full Inworld TTS 2 spec sheet →
Inworld Realtime TTS-2 (Research Preview) — Inworld's most powerful and expressive model. 100+ languages with natural-language style steering for fine-grained delivery control.
Frequently asked questions
Which is cheaper, Gemini 3.8 Flash TTS or Inworld TTS 2?+
They are not directly comparable on price: Gemini 3.8 Flash TTS costs 2 credits (headline rate) and Inworld TTS 2 costs 2 credits (headline rate), and one of those is a headline rate rather than the cost of a complete job.
What can Gemini 3.8 Flash TTS do that Inworld TTS 2 can't, or vice versa?+
Only Gemini 3.8 Flash TTS lists style direction, audio tags, multi speaker, 30 voices. Only Inworld TTS 2 lists research preview, 100+ languages, style steering. Both list text to audio, text to speech, expressive, multilingual.
How do Gemini 3.8 Flash TTS and Inworld TTS 2 bill?+
Gemini 3.8 Flash TTS bills per 1,000 characters of input text. Inworld TTS 2 bills per 1,000 characters of input text. Both are charged in Versely credits.
Which ranks higher, Gemini 3.8 Flash TTS or Inworld TTS 2?+
Gemini 3.8 Flash TTS sits at #5 in text to audio and Inworld TTS 2 at #9 in text to audio on Versely's live model rankings. Versely ranks each capability on its own leaderboard, so those positions are only a direct comparison when the category is the same.
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