Best Synthflow alternatives in 2026
Short answer: if you want what Synthflow does without engineering work — and on WhatsApp, email and web chat too — Jelliu is our pick, with a permanent Free plan (15 voice minutes a month) and paid plans from $99/month. Teams with developers usually compare Retell AI, Bland AI, Vapi; enterprises with a procurement process compare Synthflow and PolyAI. Disclosure: Jelliu is our product; competitor facts come from each vendor’s pricing page, checked November 1, 2026.
Jelliu in one paragraph
Jelliu is a no-code platform for autonomous AI agents (called Bop) that answer and make phone calls and handle WhatsApp, email and web chat in English, Spanish and Portuguese — for sales, customer support, appointment booking, collections and outbound campaigns. It has a permanent Free plan with 15 voice minutes a month; paid plans start at $99/month (Starter $99, Growth $249, Business $549; Enterprise custom, including installation on your own servers).
Why teams look for a Synthflow alternative
Synthflow now sells only annual enterprise agreements, with no free plan, trial or per-minute rate. Small and mid-size teams that want to start this week, pay monthly or test for free look for alternatives.
1. Jelliu — best no-code Synthflow alternative
No-code autonomous agents for sales, support, appointments and collections across phone, WhatsApp, email and web chat, with campaigns and CRM sync. Flat monthly plans with voice minutes included. See pricing · Jelliu vs Synthflow.
2. Retell AI — developers who want templates plus an API
A voice-agent platform with templates, call analytics, webhooks and an API, billed per minute. Published pricing: $0.07–$0.31/min pay-as-you-go; $10 in free credits; Enterprise custom. Jelliu vs Retell AI.
3. Bland AI — programmatic phone calls at volume
An API-first phone agent platform priced per minute, aimed at engineering teams running calls at volume. Published pricing: $0.14/min with no platform fee, or $0.12/min with a $299/month fee; Enterprise custom. Jelliu vs Bland AI.
4. Vapi — developers building a custom voice product
A developer voice API: your engineers build the agent, campaigns and integrations. Published pricing: $0.05/min hosting fee plus model, speech and telephony billed separately; $5 free credits. Jelliu vs Vapi.
5. OnDial — per-minute voice agents for small and growing teams
Voice agents priced per minute by volume tier, with add-ons for concurrent channels and phone numbers. Published pricing: $0.055/min (Essential), $0.050/min (Growth), $0.045/min (Scale) by volume; concurrent channels and phone numbers $4.90/month each; free trial. Jelliu vs OnDial.
6. PolyAI — large contact centers
Managed voice assistants for large contact centers, sold on enterprise contracts. Published pricing: Enterprise contract through sales. Jelliu vs PolyAI.
7. Lindy — general no-code agents, including voice
A no-code builder for general business agents — email, meetings, calendar and voice — priced per user. Published pricing: Team from $29.99 per user/month; $50 in free credits (checked Oct 20, 2026). Jelliu vs Lindy.
How we compared
Disclosure: Jelliu publishes this page and Jelliu is our product. Every competitor fact comes from that vendor’s public pricing page, checked on November 1, 2026 unless another date is shown. We give no scores or star ratings and invent no benchmarks. Prices change often — confirm on the vendor’s page before you buy. Sources: jelliu.co/pricing, synthflow.ai/pricing, retellai.com/pricing, bland.ai/pricing, vapi.ai/pricing, ondial.ai/pricing, poly.ai, lindy.ai/pricing.
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Frequently asked questions
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