Relevance AI vs. Sixtyfour Comparison Chart

StackAI is an enterprise AI automation platform to build end-to-end internal tools and processes with AI agents in a fully compliant and secure way. Designed for large, regulated organizations, it enables teams to automate complex workflows across operations, compliance, finance, IT, and support without heavy engineering. With StackAI you can: • Connect knowledge bases (SharePoint, Confluence, Notion, Google Drive, databases) with versioning, citations, and access controls • Publish AI agents as chat assistants, advanced forms, or APIs integrated into Slack, Teams, Salesforce, HubSpot, or ServiceNow • Govern usage with enterprise security: SSO (Okta, Azure AD, Google), RBAC, audit logs, PII masking, data residency, and cost controls • Route across OpenAI, Anthropic, Google, or local LLMs with guardrails, evaluations, and testing • Deploy in multi-tenant cloud, dedicated cloud, private cloud, or on-premise

11x is building the autonomous digital workforce for GTM teams to accelerate growth. With two digital workers live today, 11x helps sales, marketing, and growth teams create, qualify, and convert pipeline across every channel in one unified platform. Alice is the outbound digital worker creating demand. She runs your full outbound motion in one workflow from prospecting to enrichment to multi-channel engagement and booking meetings on autopilot. Julian is an inbound digital worker capturing demand 24/7. He handles discovery, qualifies leads, and books meetings across phone, chat, SMS, email, and WhatsApp. Inbound intent is converted into qualified pipeline instantly. Trusted by teams worldwide, from high-growth startups to large enterprises, including Xerox, UST, Gupshup, Sage, Checkr, Armanino, and Rho. Backed by a16z and Benchmark, 11x is automating GTM workflows so humans can focus on what they do best: creating, innovating, and building relationships.

Gemini Enterprise Agent Platform is a comprehensive solution from Google Cloud designed to help organizations build, scale, govern, and optimize AI agents. It represents the evolution of Vertex AI, combining advanced model development with new capabilities for agent orchestration and integration. The platform provides access to over 200 leading AI models, including Google’s Gemini series and third-party options like Anthropic’s Claude. It enables teams to create intelligent agents using both low-code and code-first development environments. With features like Agent Runtime and Memory Bank, businesses can deploy long-running agents that retain context and perform complex workflows. The platform emphasizes security and governance through tools like Agent Identity, Agent Registry, and Agent Gateway. It also includes optimization tools such as simulation, evaluation, and observability to ensure consistent agent performance.

Sendbird is the omnichannel AI agent platform enterprises choose to elevate customer experience, by initiating autonomous support & sales conversations, keeping humans in the loop for complex inquiries, and re-engaging customers with proactive business messages. Combining omnichannel AI and a battle-tested, award-winning communication APIs, Sendbird enables businesses to build AI agents and meaningful customer connections at scale. Sendbird’s AI-powered customer service platform helps businesses deliver scalable, omnichannel support through intelligent AI agents. These agents work seamlessly across channels like mobile apps, web, SMS, and social media, providing instant and proactive assistance to customers 24/7. With the ability to integrate into existing customer support tools, the platform enhances resolution rates, reduces response times, and improves customer experience by offering a unified view of all interactions.

Bigly Sales is a fully managed AI calling platform for sales teams, lead generation companies and call centers. AI voice agents call, qualify, nurture and live-transfer leads around the clock, answer inbound calls, and book appointments, while every outcome writes back to your CRM. You don't assemble the stack yourself. Bigly writes your call scripts with Claude, ChatGPT and other leading LLMs, then tests script versions against each other on live traffic and keeps the one that converts best. Phone numbers, carrier registration, more than 200 whitelisted lines with local presence, spam monitoring, call routing and campaign setup are handled for you before the first dial. Each call is checked against consent, suppression lists, known TCPA litigants and state and federal calling rules, including quiet hours, before it is placed. Reporting is built around the result you pay for. The dashboard tracks success rate per lead, cost per transfer and cost per human contact, plus a dial-to-transfer funnel that shows where calls drop off: no answer, DNC request, failed qualification, or a transfer the agent never picked up. Leads can arrive in real time from API vendors or as uploaded lists, and every source is ranked by success rate and cost, so you can see which lead vendors pay off. An hour-by-hour view shows when your leads actually convert. The Bigly Sales MCP server lets you run the account by asking Claude or ChatGPT: add leads to an active campaign, check pacing and minute usage, pull call summaries and transcripts, or find out who picked up today and wants a demo. Common uses include aged and dead lead reactivation, speed-to-lead follow-up on web and vendor leads, appointment setting, inbound answering and overflow, and warm transfers to licensed agents in insurance, lending, home services, legal, auto and political fundraising. Integrations include HubSpot, Salesforce, Zoho CRM, Pipedrive, GoHighLevel, Close, Follow Up Boss, Keap, monday CRM, Freshsales, ActiveCampaign and Microsoft Dynamics 365, plus an API for real-time lead posting. Plans start at $99 a month for 500 minutes, and Hunter, Closer and Rainmaker add a dedicated account manager who watches results and tunes your campaigns. New customers start with a free 30-minute AI calling setup ($3,000 value): the team builds your calling system live, shows the MCP and runs a test call.

Securely deploy vibe-coded apps in one governed platform. Build in Retool, import from tools like Claude Code, Replit, or Lovable, or connect via MCP. However your team builds, every app ships safely, with governance built in. People across your organization are already vibe-coding internal tools with no SSO, no RBAC, no audit logs, and no connection to your existing data controls. Retool is where secure vibe coding happens by default. Build from scratch, import an app from another AI builder, or connect an agent via MCP — governance lives in the platform, not in each individual app.

AI Sales Rep with Person-Level Website Identification Identify and Influence Your Engaged Website Visitors into Sales-Ready Leads – Before You Commit a Single Working Hour. Lower Funnel, Higher Value Leads Using our advanced WebID +Person identification technology, we uncover and identify the most engaged visitors to your site. - 40 points of data about each prospect, including first name, last name, email address, and more. - Engaged, But Anonymous: These prospects are conducting online research but haven’t met with your sales team yet. - These visitors are deep in your sales funnel, spending time on your key ‘buying pages’ but remaining unknown to you. - Our AI Sales Rep identifies and gently engages with these visitors, influencing them to express interest. This is 100% automated. Leverage the power of AI to turn your website visitors into meeting-ready leads effortlessly.

Trusted by over 25 million users, Jotform is an all-in-one, no-code platform that simplifies data collection, automation, and online sales. Using its drag-and-drop Form Builder, businesses can create customized forms and surveys to collect leads, payments, and e-signatures. With 10,000+ templates and advanced features like conditional logic and 200+ integrations, Jotform streamlines workflows. Jotform's AI-powered Agents provide real-time customer support, guiding users through form submissions, answering questions, and ensuring a smooth experience while reducing manual intervention. These AI agents learn from interactions to improve responses, enhancing efficiency and customer satisfaction. The platform also includes a Store Builder to sell products and services, accept payments through 30+ gateways, and tools like Approvals and Report Builder to automate workflows and generate actionable insights.

ActiveCampaign is the autonomous marketing platform that transforms how marketers, agencies, and business owners work. Use Active Intelligence to power goal-aware automations and orchestrate personalized experiences across email, SMS, and WhatsApp. Within a single tool, you get real-time reporting and proactive optimizations in addition to market-leading deliverability and integration with 1000+ apps. With a user-friendly interface and a comprehensive suite of features, ActiveCampaign's platform is powerful, accessible, and designed to scale with your business. It's also easy to get started: While traditional tools force teams through long setup cycles and training, ActiveCampaign delivers measurable lifts in engagement and conversions in days. 89% of surveyed customers say the platform meets their business needs better than the competition, and 88% say ActiveCampaign delivers value faster than competitors. Read our ROI report for methodology

Google AI Studio is a unified development platform that helps teams explore, build, and deploy applications using Google’s most advanced AI models. It brings text, image, audio, and video models together in one interactive playground. With vibe coding, developers can use natural language to quickly turn ideas into working AI applications. The platform reduces friction by generating functional apps that are ready for deployment with minimal setup. Built-in integrations like Google Search enhance real-world use cases. Google AI Studio also centralizes API key management, usage monitoring, and billing. It offers a fast, intuitive path from prompt to production powered by vibe coding workflows.