Sera by Twig alternatives
6 agents tools in the same lane as Sera by Twig, ranked by editorial score.
TI
Tiledesk
Agents · Multi-model
7.1
Open-source conversational AI platform for building multi-channel support agents and automation workflows.
Freemium· 14-day free trial; freemium, paid, and enterprise tierscustomer-supportrag-knowledge-base
RO
Rosie
Agents
6.9
AI phone receptionist that answers, books, and screens calls 24/7 for small businesses.
Paid· Professional: $49 · Scale: $149 · Growth: $299phone-answeringappointment-booking
CA
Cald.AI
Agents · Multi-model
7.2
Voice AI agents that run inbound and outbound phone calls with sub-second latency.
Freemium· 100 free minutes; volume pricing at 10k min/mo; enterprise customoutbound-callsinbound-support
AI
Aidbase
Agents · OpenAI
6.9
AI-powered customer support stack purpose-built for SaaS startups, bundling a trained chatbot, ticketing, and knowledge base.
Freemium· Standard: €29 · Pro: €39 · Expert: €199customer-supportai-chatbot
CA
Caspian AI
Agents
One integration to give any AI agent a phone number, inbox, and presence across every major messaging channel.
Freemium· Pricing tiers referenced on the site but specific dollar amounts are not published; contact sales for production usage.Cross-channel customer support agentOutbound sales SDR across email and WhatsApp
RA
Relevance AI
Agents · Multi-model: Claude (Opus/Sonnet/Haiku), OpenAI GPT, Google Gemini, plus open-weight options (Kimi K2, GLM)
Build and deploy an AI workforce of specialized agents across your business tools
Enterprise· Free trial available via the app. Paid tiers are quote-based (Enterprise): custom actions, unlimited agents/tools/users, dedicated account manager. Reported customer benchmarks cite an average cost of ~$0.09 per task at scale; no fixed public tier pricing.Outbound prospect research and personalisationMeeting prep and CRM hygiene