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Inworld TTS

Cost-leader realtime TTS for voice agents and games; hybrid pay-as-you-go plus monthly credit plans that lower the per-1M-character rate as commitment grows; SOC 2 Type II with zero-data-retention posture.

Among the 46 text-to-speech tools we track, Inworld TTS has the 1st-widest language coverage and the 4th-cheapest fast-model rate - a fit for multilingual and localization projects.

From $25/mo

Facts verified Jul 20, 2026Try Inworld TTS

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What we know about Inworld TTS

Inworld TTS is a text-to-speech apis platform: cost-leader realtime TTS for voice agents and games; hybrid pay-as-you-go plus monthly credit plans that lower the per-1M-character rate as commitment grows; SOC 2 Type II with zero-data-retention posture. This profile tracks what we have verified about Inworld TTS, each fact linked to a primary source and dated.

On pricing, Inworld TTS starts at $25 per month for its entry tier. That is the sticker rate: real production cost usually runs higher once you add a language model, a voice provider, and telephony minutes. Every Inworld TTS comparison on the site works from that all-in figure rather than the headline number, because the headline number is rarely what the invoice says.

On capabilities, Inworld TTS covers streaming audio output, realtime websocket api, instant voice cloning, professional voice cloning, emotion / style controls, and word-level timestamps. Each of those is verified against Inworld TTS's own docs or dashboard, not marketing copy.

For compliance, with Inworld TTS: SOC 2 Type II is in place. If you are in a regulated space, confirm the current posture with Inworld TTS before you commit, since these change plan by plan.

In total we track 20 verified facts for Inworld TTS today, and add coverage as the ingestion pass revisits it. Where a number is a vendor claim rather than our own measurement, it is labeled as such on the Inworld TTS fact sheet below, and each row links the primary source it came from so you can check our work.

Whether Inworld TTS is the right call depends on your use case more than any single spec, which is why the head-to-head verdicts below score it per scenario rather than crowning one overall winner. Use the fact sheet for the raw numbers, and the matchups for how Inworld TTS actually fares against the platforms buyers most often weigh it against.

Fact sheet

Pricing
Pricing facts
Price per 1M characters (flagship model)25 $/1M charsJul 20
Price per 1M characters (fast model)15 $/1M charsJul 20
Pricing modelhybridJul 20
Cheapest paid plan$25Jul 20
Free tier quota70Jul 20
Capabilities
Capabilities facts
TTFB latency (vendor-claimed)~200 msJul 20
Streaming audio output✓ YesJul 20
Realtime websocket API✓ YesJul 20
Instant voice cloning✓ YesJul 20
Professional voice cloning✓ YesJul 20
Minimum audio for voice cloning5Jul 20
Languages supported~200 languages and locales (TTS-2)Jul 20
Emotion / style controls✓ YesJul 20
Word-level timestamps✓ YesJul 20
Pronunciation dictionaries✓ YesJul 20
Compliance & trust
Compliance & trust facts
SOC 2 Type II✓ YesJul 20
HIPAA BAA available✓ YesJul 20
Build experience
Build experience facts
Official SDKsPython SDKJul 20
Concurrency on base plan5Jul 20
Output formatsMP3, WAV, PCM (LINEAR16), Opus, mu-law, A-lawJul 20

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Inworld TTS head-to-head

Inworld TTS vs Rimewon 3 · lost 3 · tied 0
AudiobookswonContent CreatorswonDeveloperslostDubbingwonSelf-HostedlostVoice Agentslost
Inworld TTS vs Cartesiawon 3 · lost 3 · tied 0
AudiobookswonContent CreatorswonDeveloperslostDubbingwonSelf-HostedlostVoice Agentslost