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Inworld
✓ verifiedFreemium
Realtime voice AI platform offering low-latency TTS, STT and multi-provider LLM routing for developers building conversational apps.
489K visits/mo12K saves
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fpt.ai
✓ verifiedPaid
Enterprise conversational-AI suite from FPT for chatbots, voice agents, eKYC and document automation across industries.
183K visits/mo
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OpenRouter
✓ verifiedFreemium
Unified API gateway that routes requests to 400+ LLMs across 70+ providers with failover and no subscription.
17M visits/mo
Pricing
On-Demand: $0 (pay-as-you-go, up to 70 min TTS free)
Creator: $25/mo ($25 credits, 500 custom voices)
Builder: $100/mo ($100 credits, 3,000 voices)
Developer: $300/mo ($300 credits, 10,000 voices)
Growth: $1,500/mo ($1,500 credits, 30,000 voices)
No public pricing
Free trial available
Free: $0 (free models only, 50 requests/day)
Pay-as-you-go: 5.5% platform fee on inference
Core features
- ✦Realtime TTS-2 with voice cloning, design and inline direction
- ✦Speech-to-text with voice profiling, diarization and timestamps
- ✦End-to-end speech-to-speech Realtime API over WebSocket/WebRTC
- ✦LLM Router across OpenAI, Anthropic, Google and 220+ models at cost
- ✦100+ languages with cross-lingual voice cloning
- ✦SOC 2 Type II, HIPAA and GDPR compliance
- ✦Chatbot and conversational-AI building platform (Chat/Engage)
- ✦AI voice agents and text-to-speech (Voice Maker)
- ✦eKYC identity verification
- ✦Document reading and automation (FPT AI Read)
- ✦AI agents for customer service and knowledge management
- ✦Industry solutions for banking, insurance, retail, logistics
- ✦One unified, OpenAI-compatible API for 400+ models
- ✦Automatic provider failover for higher uptime
- ✦Edge routing for low latency
- ✦Custom data and provider policies
- ✦Pay-as-you-go credits usable across any model
Use cases
- →Voice-first companion and consumer apps
- →Customer support and conversational agents
- →Language learning and education tools
- →Interactive game NPCs and media
- →Routing LLM traffic to optimize cost, latency or quality
- →Automating customer service with chatbots and voice agents
- →Verifying identity with eKYC during onboarding
- →Automating document processing
- →Improving call-center quality and sales efficiency
- →Accessing many LLMs through one integration
- →Adding provider redundancy to AI apps
- →Comparing model price and performance
- →Powering agents and AI-native products
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