Stop Building. Start Calling.
See why high-volume sales teams are ditching expensive api platforms for the simplicity of Kolz Bulk. No developers required.
Features
$0.03/min Flat. Simple, predictable, all-inclusive.
$0.05/min + Provider Costs (STT/LLM/TTS)
High-volume sales & lead gen teams
Software engineers & developers
Excel-In, Excel-Out. Upload list & launch.
API-driven; Requires dev to launch bulk calls
Zero. No-code, ready to use in minutes.
High. Requires coding & infrastructure.
Enriched Excel files (Scores & Summaries)
Raw webhook data requiring database sync
Driving revenue and tracking leads natively.
Providing foundational voice AI building blocks.
Built for Sales, Not Engineers
Choose Kolz Bulk if your ultimate goal is driving revenue, not building infrastructure. We stripped away the developer complexity so you can go live instantly.
- Excel-In, Excel-Out workflow
- $0.03/min flat rate. Zero hidden fees.
- Launch thousands of calls in one click
Why Choose Vapi?
Use Vapi if your engineering team wants the flexibility to "Bring Your Own" providers (BYO-LLM/TTS/STT) and needs a purely API-native architecture to build custom agents from scratch.
The Trade-off
- •You will need to pay software engineers to integrate their API.
- •You have to build your own dashboard to manage campaigns.
- •Costs escalate drastically when running high call volumes.
Ready to make the switch?
Join the smart sales teams automating their outreach with Kolz Bulk. Claim your 100 free minutes today.