Inworld AI
Real-time voice APIs: speech-to-text, text-to-speech, and speech-to-speech for apps and agents.
At a glance
Price not confirmed · Source review 2026-10-31- Price & billing
On-Demand $0 pay-as-you-go (TTS-2 $25 per 1M characters, TTS-2 Flash $15 per 1M, STT $0.15 per hour; includes up to 70 TTS minutes, 100 custom voices, 2 professional clones, and a commercial license). Creator $25/month ($25 credit; TTS-2 $20 per 1M, Flash $10, STT $0.10 per hour). Builder $100/month ($17.50/$9/$0.10; 3,000 voices). Developer $300/month ($15/$8/$0.10; 10,000 voices). Growth $1,500/month ($12.50/$7/$0.10; 30,000 voices; ZDR, HIPAA, and BAA as add-ons). Enterprise custom (TTS-2 as low as $5 per 1M). Credits equal the tier price and roll over up to 3 months; LLM inference starts at $0.07 per 1M tokens; 200+ languages; all tiers include GDPR and SOC 2 Type II.
- Free allowance
Not separately confirmed. Check the current plan before relying on a free allowance.
- Best suited to
Developers building voice agents and real-time conversational apps that need low-latency speech APIs.
Fit is editorial guidance, not a measured result.- Platforms
Access: not separately verified. Operating systems not separately verified.
Published-source facts and editorial guidance. No product test is implied. Confirm current conditions before purchase.
No product screenshot is claimed for this listing. Use the official website ↗ to inspect the current interface.
What to know before choosing
Good fit
Developers building voice agents and real-time conversational apps that need low-latency speech APIs.
Limits and trade-offs
Inworld is no longer a character-design tool: the current product is a set of realtime voice APIs, so buyers looking for the old character creator will not find it here. Usage is metered by credits and characters, and HIPAA, ZDR, and BAA controls are add-ons rather than included on every tier.
Plans and free allowances
On-Demand $0 pay-as-you-go (TTS-2 $25 per 1M characters, TTS-2 Flash $15 per 1M, STT $0.15 per hour; includes up to 70 TTS minutes, 100 custom voices, 2 professional clones, and a commercial license). Creator $25/month ($25 credit; TTS-2 $20 per 1M, Flash $10, STT $0.10 per hour). Builder $100/month ($17.50/$9/$0.10; 3,000 voices). Developer $300/month ($15/$8/$0.10; 10,000 voices). Growth $1,500/month ($12.50/$7/$0.10; 30,000 voices; ZDR, HIPAA, and BAA as add-ons). Enterprise custom (TTS-2 as low as $5 per 1M). Credits equal the tier price and roll over up to 3 months; LLM inference starts at $0.07 per 1M tokens; 200+ languages; all tiers include GDPR and SOC 2 Type II.
Evidence
Inworld official pricing page ↗ (reviewed 2026-10-31), Inworld official homepage ↗ (reviewed 2026-10-31)
Official published page review; no authenticated product test
Dates: Last reviewed 2026-10-31. Last reviewed is the latest source or editorial review date; it is not a content-change date.
A closer look at Inworld AI
Inworld is now a realtime voice API platform: TTS-2 and TTS-2 Flash for speech synthesis, STT-1 for transcription, speech-to-speech conversion, and an LLM inference router across 100+ models. Developers buy a credit tier and meter usage by characters and hours, with custom voice cloning and a commercial license included from the free On-Demand tier up.
Editorial guidance based on published documentation. The workflow below is a suggested starting point, not a measured product result.
When to choose Inworld AI
- Developers building voice agents and realtime conversational apps that need low-latency speech APIs.
- Apps that need multilingual text-to-speech or speech-to-text across 200+ languages.
- Teams that need custom or professionally cloned voices with a commercial license.
When to choose something else
- Buyers looking for the old Inworld character-design studio.
- Non-developers who want a no-code character maker rather than APIs.
- Teams that need HIPAA or BAA coverage on the cheapest tiers without paying for add-ons.
A practical starting workflow
- Pick the API for the job: TTS-2 or Flash for synthesis, STT-1 for transcription, or speech-to-speech for live conversion.
- Create custom voices or professional clones and test them against your agent's prompts.
- Stream audio through the API and watch credit consumption against your tier.
- Scale to a higher tier or Enterprise when voice counts or character volume outgrow the current plan.
Check before committing
- Inworld is no longer a character-design tool: the current product is a set of realtime voice APIs, so buyers looking for the old character creator will not find it here.
- Usage is metered by credits and characters, so a busy voice agent can burn through a tier's credit faster than the headline monthly price suggests.
- Compliance controls such as ZDR, HIPAA, and BAA are add-ons rather than included on every tier, and Enterprise pricing is custom.
- Pricing and feature availability may change; confirm current terms on the official website before committing.
Common questions
Is Inworld still a character creator?
No. Inworld's current product is realtime voice APIs: TTS-2, TTS-2 Flash, STT-1, speech-to-speech, and an LLM inference router. The old character-design positioning is gone.
Inworld official pricing page ↗ · Inworld official homepage ↗
How is Inworld usage billed?
Credits equal the tier price and roll over for up to 3 months. On-Demand bills TTS-2 at $25 per 1M characters and Flash at $15 per 1M; paid tiers lower those rates (for example $20/$10 on Creator, $12.50/$7 on Growth), and Enterprise goes as low as $5 per 1M for TTS-2.
How many voices and languages does Inworld support?
Custom voice counts rise with the tier, from 100 on On-Demand and Creator to 3,000 on Builder, 10,000 on Developer, and 30,000 on Growth, with 200+ languages supported across the platform.
Compare approaches for this task
- ElevenLabs Music — Individual creators (Free-Pro) and small organizations within the Music Terms eligibility limits (Scale: fewer than 10 employees; Business: fewer than 50 employees) that need original background music generated from text prompts, subject to the Music Terms media limits; Enterprise tiers list no eligibility limit.
- Narakeet — Educators, trainers, and teams turning scripts and slide decks into narrated videos without recording a voice.
Sources and checks
Last source review is not a date of product testing. No rating or test result is implied by inclusion. Check the current plan and terms before buying.