Inworld TTS-1.5 Max
Audio Available inworld/tts-1-5-max · by Inworld AI · neural-tts
Pricing — 1 offering(s)
Text characters (On-Demand, no commitment)
- $35.00 / 1M characters Current 2026-07-30 → present
Showing the active price and any recorded history. Full pricing history is available via the paid API — see API docs.
Capability profile
voice naturalness strong
language support moderate
voice variety unknown
streaming latency strong
cloning support strong
Benchmarks
| Benchmark | Score | Config | Source |
|---|---|---|---|
| P90 first-chunk latency (vendor-reported) | 250 ms | Median ~200ms per the same source. Vendor-reported, not independently verified against other providers under identical conditions. | source ↗ |
Operator guidance
Choose Inworld TTS-1.5 Max when sub-250ms streaming latency for voice agents is the priority — its WebSocket-native architecture and published P90 latency figures are among the fastest vendor-reported numbers in this registry. Fish Audio S2 Pro/S2.1 Pro offer broader language coverage (80+) at a comparable price point if language breadth matters more than Inworld's realtime-first positioning.
Use cases
- Realtime, production-grade voice agents
- Audiobooks and interactive media
- Accessibility tools and language tutoring
- Content creation at scale
Limitations
- No SSML support mentioned in Inworld's documentation
- Narrower language support (15) than ElevenLabs or Fish Audio's S2 line
- No published voice-library count, unlike ElevenLabs or Fish Audio
- Latency figures are vendor-published, not independently verified
Citations
Compare models
ComparingInworld TTS-1.5 Maxwith
Pick a model above to see the comparison.