CustomGPT.ai alternatives (2026)

Free to self-host and cheapest at scale; billed per full run, not per credit.

A flat $20/mo platform fee with unlimited runs (AI tokens metered separately) makes budgeting more predictable than CustomGPT.ai's per-credit burn.

Built around multi-agent "teams" with a transparent dual meter.

Biggest free tier (5,000 credits/mo) and strong for data-heavy flows.

The most hands-off "AI employee" with voice/phone, if you want done-for-you.

Fin (by Intercom) is an AI agent for customer service that resolves support conversations end-to-end across chat, email, voice and social. It can run standalone on top of an existing helpdesk (Zendesk, Salesforce, Freshdesk, Zoho Desk and others) or bundled inside Intercom's own platform.

Enterprise AI customer service platform branded "the AI concierge for every customer." It deploys AI agents across chat, email, and voice, configured with natural-language Agent Operating Procedures (AOPs) instead of code. Used by large brands like Notion, Duolingo, Eventbrite, and Rippling to deflect and fully resolve high support volume.

Enterprise "Agent OS" for customer experience. Sierra lets large brands build, optimize, personalize, and scale branded AI agents that resolve customer issues across chat, voice, SMS, WhatsApp, email and ChatGPT. Built by former Salesforce co-CEO Bret Taylor and former Google exec Clay Bavor.

No-code platform for building and deploying AI customer-support agents trained on your own data, deployable across website chat, WhatsApp, Slack, email, and voice/telephony. Agents resolve tickets, take actions via API (AI Actions), and escalate to a human when they hit their limits.

AI customer service agent ("the AI agent customers want to talk to") that resolves support questions using your own help content and knowledge base, with a claimed 67% average automation rate. Lyro Actions let it perform autonomous tasks like checking order status, starting returns, updating accounts, and qualifying leads, and it can connect to your CRM, billing, or database over MCP.

Enterprise AI agent platform for customer service, pairing a multi-model AI engine with on-the-ground local deployment teams to run multilingual voice, chat, and email agents that resolve customer requests at human level across 30+ markets. Sales-led and deployment-heavy, it reports an 80% resolve rate handling tens of thousands of requests a day.

AI Customer Concierge built for complex, regulated companies like fintech and healthtech. Unlike basic deflection chatbots, Lorikeet resolves end-to-end support issues across chat, email, SMS, WhatsApp, and voice by following the same multi-step workflows and judgment your human agents use, taking actions like refunds, billing changes, and account updates.

Gorgias is an ecommerce-focused AI helpdesk built primarily for Shopify (plus BigCommerce and Magento) stores. Its AI Agent autonomously resolves support conversations across email, chat, SMS, and social, pulling in order and customer data to take actions like editing or cancelling orders. It blends a traditional ticketing helpdesk with usage-based AI automation.

Freshdesk is Freshworks' cloud helpdesk for ticketing and omnichannel customer support, now layered with Freddy AI. Freddy AI Agent autonomously resolves customer questions across email and chat, while Freddy Copilot assists human agents inside the ticket. You buy a per-agent helpdesk plan and bolt on AI as a usage-based add-on.

Botpress is a no-code AI agent and chatbot builder pairing a visual Studio with a code-first developer kit (ADK). It deploys agents to channels like WhatsApp, Messenger, Slack and web chat, and bundles the underlying LLM cost into a per-conversation price with no markup. Pricing is per conversation, billed in monthly packs once you exceed your plan allowance.

Zendesk layers autonomous AI agents on top of its established helpdesk and ticketing suite, aiming to resolve a large share of support requests end to end without human escalation. AI agents are sold on outcome-based pricing: you pay per automated resolution rather than per AI seat. It is best suited to teams already standardized on Zendesk for customer service.

Agentforce is Salesforce's native AI agent layer that builds autonomous agents on top of CRM, Data Cloud, and Flow. Agents are configured in the Agent Builder with no-code topics and actions, grounded in your Salesforce data, and deployed across service, sales, and employee-facing channels. It is consumption-priced rather than per-seat, billed either per conversation or via Flex Credits per action.

Ada is an enterprise AI customer service platform built to resolve support inquiries automatically across chat, email, voice, and messaging channels. Its Reasoning Engine uses multiple industry-leading LLMs and connects to systems like Zendesk, Salesforce, and ServiceNow to take real actions. Ada markets resolving over 80% of customer inquiries with AI agents designed for scale and enterprise-grade control.

Voiceflow is a no-code/low-code platform for designing, building, and deploying AI chat and voice agents on a visual canvas. It targets agencies and businesses that want to ship customer-facing assistants across web, voice, and messaging channels without writing code, while keeping control over LLM choice, knowledge bases, and tools. Pricing moved to a unified credit model (April 2025) where a monthly plan fee includes a credit allowance and usage is metered against it.

OpenAI's visual, drag-and-drop toolkit for building, deploying, and optimizing AI agents without standing up your own orchestration layer. It bundles Agent Builder (a node-based canvas for multi-agent workflows with guardrails), ChatKit (embeddable chat UI), Connector Registry (managed data connectors), and Evals. There is no separate product fee: you build for free and pay only standard OpenAI API usage when your agents actually run.

Stack AI is a no-code, drag-and-drop platform for building enterprise AI agents and workflows that connect LLMs to internal data sources, documents, and apps. It leans hard on governance: on-prem/VPC deployment, SSO, access control, and SOC 2, HIPAA, and GDPR compliance. It targets regulated teams (finance, healthcare, legal) that need agents without writing code.

Dify is an open-source platform for building LLM apps, agentic workflows and RAG pipelines through a visual canvas, with a hosted cloud tier and a free self-hostable Community Edition. It blends a no-code/low-code builder with backend-as-a-service APIs, native MCP (client and server), and integration with hundreds of model providers, so teams can ship chatbots, agents and workflows without wiring infrastructure from scratch.

Taskade is an all-in-one AI productivity workspace (tasks, docs, mind maps, chat) that doubles as a no-code builder for custom AI agents and automations. You assemble agents, deployable apps, and multi-step automations against your project data, and the platform bills on a tiered plan that bundles a fixed monthly allotment of "AI credits" consumed by agent and automation runs across 15+ models (GPT, Claude, Gemini).

Text.com is the parent company behind LiveChat (agent-driven live chat helpdesk) and ChatBot (a no-code visual bot builder), now converged into one per-seat support suite. ChatBot lets non-developers build automated chat flows with a drag-and-drop builder plus an AI Agent trained on your content, while LiveChat handles human agent handoff, visitor tracking, and proactive campaigns. Both bill per agent seat and bundle a small monthly allotment of AI resolutions, charging per-resolution overages beyond it.

eesel AI turns a company's existing knowledge (help center, past tickets, Google Docs, Notion, Confluence) into AI teammates that resolve support tickets, draft blog content, and answer ecommerce questions inside the tools you already use. It plugs into helpdesks like Zendesk, Freshdesk, Intercom and Gorgias, and as of 2026 bills on a pure pay-per-task model with no seats or platform fee on standard usage.

Crescendo.ai is an outcome-based, fully managed customer service offering that blends agentic AI assistants with a 24x7 human team that Crescendo owns and operates on your behalf. Unlike self-serve support software, Crescendo runs the AI configuration, knowledge maintenance, QA and human escalation for you across chat, voice, email and SMS in 50+ languages, and bills per successfully-resolved interaction rather than per seat or per ticket.

Gladly is an enterprise customer-experience platform built around a lifelong customer record rather than tickets, blending a people-centered helpdesk (voice, chat, SMS, email, social in one timeline) with "Gladly" (formerly Sidekick) AI that both fully resolves conversations and assists human agents. It positions on driving customer lifetime value and revenue, not pure deflection, and is aimed at mid-market and enterprise B2C/retail brands.

Phonely (YC S24) is a no-code voice AI platform for building humanlike AI phone agents that answer calls, route them, book appointments, run outbound campaigns and handle SMS. It is sold as a usage-based "AI call center": you build an agent in the dashboard, connect it to your CRM/calendar via Zapier-style workflows, and pay for AI talk-time by the minute rather than per seat or per agent.

Goodcall is a no-code AI phone agent and virtual receptionist aimed at small and local service businesses.

Cognigy (now NiCE Cognigy after NiCE's 2025 acquisition) is an enterprise-grade agentic AI platform for customer service, combining a visual low-code AI Agent Studio, a built-in Voice Gateway for AI phone agents, and Knowledge AI (RAG). It is sold contract-only to large contact centers and is deeply integrated with major CCaaS stacks (NiCE CXone, Genesys, Amazon Connect, Avaya, Microsoft, 8x8). Pricing is usage-based under the hood (billable conversations, concurrent voice lines, knowledge queries) but always wrapped in a custom annual enterprise contract.

v0 is Vercel's AI-powered, prompt-to-app builder that turns natural-language prompts (and design images) into working React/Next.js + Tailwind UIs and full-stack apps. It blends a no-code chat canvas with one-click Vercel deployment and GitHub sync, but bills on token-metered credits rather than seats alone, so it sits between a no-code builder and a real coding tool.

Bubble is a full-stack visual no-code platform for building production web and mobile apps without writing code, covering UI, database, and backend workflows. It moved to a workload-based pricing model: plans bundle a monthly allowance of "workload units" (WU) that meter every backend operation, and usage beyond the allowance is billed as overage. It is a builder for finished apps, not an AI agent platform; AI capabilities exist via plugins and its API connector.

Softr is a no-code platform for building client portals, internal tools, and web apps on top of a database (its own Softr Database, Airtable, Google Sheets, or external REST APIs). It targets non-developers who assemble apps from pre-built blocks with permissions, user groups, and payments, rather than writing code or wiring a backend. Increasingly AI-forward: it ships an AI app builder and a hosted MCP server that lets AI tools read/write Softr data.

Glide is a no-code platform that turns spreadsheets and databases (Glide Tables, Google Sheets, Airtable, Excel, SQL) into custom mobile and web business apps. It has pivoted hard toward AI: the Glide Agent can generate a working app from a prompt, and you can embed AI actions (extract data, draft emails, transform text/audio/images) into app workflows. Pricing is a flat monthly plan plus usage-based "updates," where most data writes to external sources and API/workflow actions are metered.

As of mid-2026 vellum.ai hosts "Vellum: Your Personal Intelligence" — an open-source (MIT) personal AI assistant marketed as an "AI chief of staff for high-agency individuals." It lives in Vellum Cloud (or self-hosted), has its own identity/email, a persistent multi-type memory layer, and acts in the world: triages email, manages calendar, posts to Slack/X, updates Linear, makes real phone calls, runs web search, and even vibe-codes small web apps. Capabilities extend via installable "skills" (a catalog at skills.sh incl. Gmail, Slack, DoorDash, Amazon) and via user-added MCP servers (Linear, GitHub, Notion, etc.). NOTE: this is NOT the older Vellum LLMOps/prompt-engineering-and-workflows developer platform that previously occupied this domain; that product appears to have been replaced/repositioned, so any "Pro $500/mo, prompt/workflow execution limits" pricing you find for "Vellum" is stale.