Free / Open-sourceAI audio platform for speech, agents, music and dubbing
Free / Open-sourceAI audio platform for speech, agents, music and dubbing
Speko records 20,954 monthly visits with -7.9% month-over-month growth and Paid, Contact for Pricing pricing. Zapier records 5,065,248 monthly visits with +0.4% growth and Freemium, Free Trial, Paid pricing.

The provider-neutral router and platform for voice AI agents
| Dimension / Metric | ![]() | ![]() |
|---|---|---|
| Official Domain | speko.ai | zapier.com |
| Pricing Model | Paid, Contact for Pricing | Freemium, Free Trial, Paid |
| Monthly Visits | 20.95K (20,954) | 5.07M (5,065,248) |
| MoM Traffic Delta | -1.8K (-7.9%) | +22.46K (+0.4%) |
| Primary Market & Share | 🇺🇸 United States (62.2%) | 🇺🇸 United States (39.5%) |
| Direct Visits / mo | 5.93K | 2.23M |
| User Rating | 4.4 | 4.7 |
| 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.

Automate work across thousands of apps — no code required
Connect thousands of apps with a visual editor, using both point-and-click logic and natural language to define each step.
Connect AI tools such as Claude, ChatGPT and Cursor to your apps so they can read data and take real action.
Create AI assistants that answer questions and complete multi-step tasks across your connected systems.
Store structured data your workflows can read and update, keeping records in sync across tools.
Free / Open-sourceAI audio platform for speech, agents, music and dubbing
Free / Open-sourceAI audio platform for speech, agents, music and dubbing
Free / Open-sourcePowerful open-source workflow automation with visual node building, offering robust self-hosting options but requiring technical setup.
Free / Open-sourcePowerful open-source workflow automation with visual node building, offering robust self-hosting options but requiring technical setup.
SpecialistVisual builder tailored specifically for custom AI agents, but less versatile for standard non-AI data synchronization tasks.
SpecialistVisual builder tailored specifically for custom AI agents, but less versatile for standard non-AI data synchronization tasks.

Real-time voice AI models and agents you can build on
SpecialistBuild GTM systems that turn data into revenue
Free / Open-sourceReal-time speech-to-text, text-to-speech and voice agents in one API platform
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Xiaomi's multimodal model family for reasoning, vision and voice
Free / Open-sourceBuild, test, and deploy production-grade voice AI agents over API
SpecialistAI-powered workspace generating automated workflows from prompts, but less focused on deep multi-system data synchronization.

Free / Open-sourceSpeech-to-text and voice intelligence APIs for developers
Free / Open-sourceSpeech-to-text and voice intelligence APIs for developers
Advanced no-code AI agent platform for complex web scraping and workflows, but less suited for basic app-to-app integrations.
Advanced no-code AI agent platform for complex web scraping and workflows, but less suited for basic app-to-app integrations.

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