Speko records 20,954 monthly visits with -7.9% month-over-month growth and Paid, Contact for Pricing pricing. Vapi records 662,301 monthly visits with -11.4% growth and Freemium pricing.
The provider-neutral router and platform for voice AI agents
Build, test, and deploy production-grade voice AI agents over API
| Dimension / Metric | | |
|---|---|---|
| Official Domain | speko.ai | vapi.ai |
| Pricing Model | Paid, Contact for Pricing | Freemium |
| Monthly Visits | 20.95K (20,954) | 662.3K (662,301) |
| MoM Traffic Delta | -1.8K (-7.9%) | -85.53K (-11.4%) |
| Primary Market & Share | 🇺🇸 United States (62.2%) | 🇺🇸 United States (44%) |
| Direct Visits / mo | 5.93K | 377.32K |
| User Rating | 4.4 | 4.5 |
| Supported Platforms | Website | Website |
The provider-neutral router and platform for voice AI agents
STT, LLM and TTS are selected per language based on an independent benchmark covering 89 models across 18 languages, with pre-response failover.
Design a call step by step, plug calendars, CRMs, your APIs and docs into any step, then run it with inbound, outbound and call-list support.
Draft agents are tested against simulated callers, including red-team scenarios that try to break the flow, before they go live.
Every live call is scored against checks you write in everyday language, for example reading back a date or never quoting a price.
Build, test, and deploy production-grade voice AI agents over API
Configure speech recognition, an LLM reasoning layer and text-to-speech through one API instead of integrating several vendors separately.
The platform handles real-time audio streaming, interruption handling and call state so conversations feel natural and responsive.
Provision Vapi phone numbers or bring Twilio, Vonage or Telnyx, and support both inbound and outbound calling from the same agent.
Simulate calls before launch, then track transcripts, effectiveness metrics and compliance signals across every production call.
SpecialistProvides raw frontier language models and real-time multimodal capabilities, requiring custom scaffolding compared to Vapi's voice workflows.
SpecialistProvides raw frontier language models and real-time multimodal capabilities, requiring custom scaffolding compared to Vapi's voice workflows.
SpecialistOffers developer access to Gemini's powerful multimodal APIs, but lacks out-of-the-box telephony voice agent pipelines.
SpecialistOffers developer access to Gemini's powerful multimodal APIs, but lacks out-of-the-box telephony voice agent pipelines.
Industry leader in ultra-realistic voice cloning and text-to-speech, now offering robust conversational voice agent capabilities.
Industry leader in ultra-realistic voice cloning and text-to-speech, now offering robust conversational voice agent capabilities.
Provides ultra-low latency text-to-speech and managed voice agents via developer API, rivaling Vapi's audio speed.
Provides ultra-low latency text-to-speech and managed voice agents via developer API, rivaling Vapi's audio speed.
Delivers robust real-time speech-to-text and voice agent APIs, though with less telephony-specific orchestration than Vapi.
Delivers robust real-time speech-to-text and voice agent APIs, though with less telephony-specific orchestration than Vapi.
Xiaomi's multimodal model family for reasoning, vision and voice
SpecialistProvides enterprise-grade speech-to-text and audio intelligence APIs, but lacks turnkey conversational voice agent telephony orchestration.
SpecialistProvides enterprise-grade speech-to-text and audio intelligence APIs, but lacks turnkey conversational voice agent telephony orchestration.
Free / Open-sourceOne speech AI API for recognition, generation, and translation in 60+ languages
Free / Open-sourceOne speech AI API for recognition, generation, and translation in 60+ languages
Enterprise voice AI platform specializing in high-volume outbound and inbound phone calls with robust telephony integrations.
Enterprise voice AI platform specializing in high-volume outbound and inbound phone calls with robust telephony integrations.
One API gateway and LLM router for around 1,000 AI models
Offers ultra-low latency speech-to-speech APIs and voice cloning, ideal for real-time conversational agent pipelines.
Offers ultra-low latency speech-to-speech APIs and voice cloning, ideal for real-time conversational agent pipelines.
Free / Open-sourceLow-latency video, voice and AI-agent APIs for developers
Free / Open-sourceLow-latency video, voice and AI-agent APIs for developers
