Inworld AI Platform vs UntitledPen

Comparing the features of Inworld AI Platform to UntitledPen

Feature
Inworld AI Platform
UntitledPen

Capability Features

Advanced Emotion Control (Pro+)
AI Writing Commands
rewritepolishimprove flowtone
API Key Authentication
Audio Download Quality Free Plan
128 kbps, 44.1 kHz
Audio Download Quality Paid Plans
Up to 192 kbps, 44.1 kHz
Audio Exports
Available to Everyone
Cost Reduction
>95% cost reduction
Customizable Voice Tone
Demo Characters
Hades (Game NPC)Alex (Tutor)Dennis (Therapist)Ashley (AI Friend)Mark (Call Center)
File Upload Support
Hosted, On-Premise, On-Device
HostedOn-PremiseOn-Device
Mini Demo Available
Multilingual Support
Multilingual TTS Support
Natural Voice Generation
Non-Verbal Control
Notion-like Smart Editor
Open Source
Provider-Agnostic
Realtime Pipelines
Realtime Streaming Output
Scaling Support
Smart Transcription
Smart Writing Assistant
SOTA Multimodal AI
Speech to Text
Studio Mode
Templates for Realtime Pipelines
Text to Speech
TTS Playground
Visual Graph System
Voice Cloning
Voice Editor
Voice Types
AlloyAshBalladCoralEchoFableNovaOnyxSageShimmerVerse

Integration Features

Integrations Information
VapiLiveKit
One API Key

Limitation Features

Audio Quality Limitation Free
128 kbps max
Audio Quality Limitation Paid
192 kbps max
Character Limit
500
Free Plan AI Usage Limit
1000
Free Plan Voice Generation Limit
10000
Usage Quotas
13/1000

Pricing Features

Creator Plan Monthly Price
$25 per month
Free Plan AI Refine Limit
1000
Free Plan Character Limit
10000
Free Plan Price
$0
Free Tier
Has Free Tier
No Credit Card Required
Pricing Compared to Competitors
>90% cheaper than competing models
Pricing Plans
Pro Plan Price
$12 per month (billed annually)
Pro/Creator Plan Character Limit
200000
Trial Period
Not specified