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Inworld TTS-2

Audio Available Full comparison ↗

inworld/tts-2 · by Inworld AI · neural-tts

Pricing — 1 offering(s)

Inworld AI

Text characters (On-Demand, no commitment)

  • $25.00 / 1M characters Current 2026-09-30 → present
    inworld.ai/pricing, On-Demand plan (no commitment): "TTS-2 $25/1M chars". Monthly plans discount it (Creator…

    inworld.ai/pricing, On-Demand plan (no commitment): "TTS-2 $25/1M chars". Monthly plans discount it (Creator $20/1M, Builder $17.50/1M, ...); the On-Demand rate is recorded as the pay-as-you-go comparison point, the same convention as tts-1-5-max-inworld. effective_from is the date this entry was sourced, not a launch or price-change date (SCO-672).

Showing the active price and any recorded history. Full pricing history is available via the paid API — see API docs.

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Capability profile

How Inworld TTS-2 rates across core capability dimensions, with the task-level evidence behind each rating.

language support Strong

200+ languages and locales in two tiers (15 most extensively evaluated, the rest fully supported), per Inworld's docs; vendor-reported.

voice naturalness Unknown

No independent quality ranking found yet for TTS-2 (its predecessor TTS-1.5 Max ranked #8 of 98 on the Artificial Analysis TTS Arena). Not rated until one exists.

cloning support Moderate

Instant voice cloning, per Inworld's docs; cloning quality not independently assessed.

streaming latency Strong

100ms P90 time to first audio byte, measured server-side, per Inworld's docs; vendor-reported, excludes network latency.

Ratings are estimated — limited independent data is available for this model.

Benchmarks

Benchmark Score Config Source
P90 time to first audio byte (vendor-reported) 100 ms Server-side measurement, excludes network latency. Not independently verified. source ↗

Operator guidance

Choose Inworld TTS-2 for low-cost ($25/1M on-demand), steerable realtime TTS across many languages. Choose TTS-2 Flash when latency matters more than steering. Quality claims are vendor-reported until an independent ranking exists.

Use cases

Limitations

Citations