Top Vapi alternatives for outbound sales calls
Ranked Vapi alternatives optimised for outbound sales — pricing, dialer integration, CRM depth, multilingual reach and managed monitoring.
Vapi is excellent for engineering teams shipping outbound sales agents but you operate the call ops yourself. The strongest alternatives for revenue teams that want managed delivery, dialer-grade throughput and CRM-native writebacks are: Kallix, Air AI, Goodcall, Retell AI, Synthflow and Bland AI. Below is the ranked breakdown by total cost of ownership for an outbound SDR motion.
How we ranked them
- 01
Dialer scale
Concurrent outbound calls per minute, retry logic, voicemail detection and pacing.
- 02
CRM writeback depth
Native (not webhook-only) integration with HubSpot, Salesforce, Pipedrive and Zoho.
- 03
Multilingual outbound
At least English + Hindi + Spanish; bonus for code-mixing handling.
- 04
Cost-per-meeting booked
All-in cost including platform fees, telephony and operations, normalised per meeting booked.
- 05
Time-to-revenue
Weeks from contract to first booked meeting on the SDR pipeline.
6 ranked alternatives
Kallix
Kallix Technologies
Managed outbound voice agent service with multilingual reach, native CRM writeback and dedicated revenue ops monitoring. Optimised for cost-per-meeting-booked.
Pros
- Managed delivery — no engineers needed
- 12 Indian languages + Spanish + English
- Native HubSpot/Salesforce/Pipedrive writebacks
- Cost-per-meeting tracked weekly
Cons
- Higher per-minute cost than Vapi DIY
- 2–4 week setup vs same-day on Vapi
- Best for
- B2B SaaS, fintech and real-estate SDR motions in India + US
- Why it fits
- Built for outbound sales as a managed service — your CRM is the source of truth, we hit the dialer.
Key features
Integrations
Air AI
Air AI
Premium outbound voice agent platform marketed as a full SDR replacement. Strong English-only conversational quality.
Pros
- High-quality conversational fluency
- Built around outbound flows
- Strong CRM webhooks
Cons
- English-only
- Enterprise-only pricing
- Less transparent unit economics
- Best for
- US B2C and B2B teams running English-only outbound
- Why it fits
- Strong for English-only US outbound but doesn't fit multilingual or India workflows.
Key features
Integrations
Goodcall
Goodcall Inc.
AI receptionist and outbound caller for SMBs, with strong Google Calendar and CRM integrations.
Pros
- Affordable per-minute pricing
- Easy onboarding for non-engineers
- Solid SMB CRM integrations
Cons
- Limited multilingual
- Less depth for complex B2B flows
- Weaker analytics
- Best for
- SMB sales teams needing a managed-light outbound bot
- Why it fits
- Best for SMB outbound that doesn't need enterprise CRM or multilingual reach.
Key features
Integrations
Retell AI
Retell AI, Inc.
Visual flow builder + bundled telephony makes Retell a usable platform for outbound, though you still operate the campaign.
Pros
- Visual builder is friendly
- Bundled telephony
- Built-in analytics
Cons
- You operate prompt tuning + monitoring
- Multilingual depth limited
- Pricing climbs at scale
- Best for
- Non-engineering operators shipping their first outbound bot
- Why it fits
- Good first step for outbound if you don't have engineers, but you'll outgrow self-serve once you scale to multi-language.
Key features
Integrations
Synthflow
Synthflow AI
No-code voice AI builder gaining traction with SMB sales teams. Pathways model + CRM sync.
Pros
- No-code interface
- Affordable starter pricing
- Decent CRM integrations
Cons
- Less mature than Retell/Vapi
- Limited Indian-language support
- Self-managed ops
- Best for
- Non-technical founders shipping outbound in days
- Why it fits
- Good non-code alternative for SMB outbound; loses to managed partners on multilingual and ops.
Key features
Integrations
Bland AI
Bland.ai, Inc.
Self-serve voice API with strong English voice and a simple pathway model. Suitable for engineering-led outbound experimentation.
Pros
- Self-serve API
- Strong English voice
- Lower per-minute rate
Cons
- BYO CRM + dialer ops
- Weak Indian-language support
- No managed monitoring
- Best for
- Engineering-led teams running outbound experiments
- Why it fits
- Engineering-led outbound experiments in English; not the right fit for multilingual or India teams.
Key features
Integrations
Related questions
Retell AI and Synthflow have lower headline per-minute rates, but once you include operations and CRM wiring, total cost is comparable to managed services like Kallix that include those in delivery.
Kallix — it ships with 12 Indian languages, Hindi-tuned voice models and handles Hinglish code-mixing natively, all included in the managed pricing.
Yes. All of Kallix, Retell, Vapi, Bland and Synthflow support BYO Twilio (Goodcall and Air AI use bundled providers but can port your numbers).
On a healthy B2B SDR motion: $80–$160 per meeting via Kallix managed; $150–$300 via DIY platforms once you include engineering ops time.
Citations
- State of voice AI for sales 2026Kallix
- Vapi outbound docsVapi Labs