5 Must-Have RAG‑Powered LLM Agents for Accounting Firms

ChatGPT Enterprise is OpenAI’s flagship offering for large organizations, delivering the GPT‑4 model with enhanced security, compliance, and data‑privacy controls. It supports document upload for Retrieval‑Augmented Generation, allowing accountants to ingest tax codes, internal policy documents, and client agreements so the model can reference the exact text during conversations. While it does not provide a dedicated knowledge‑graph layer, its RAG capability is robust and can be combined with external indexing systems for more complex relationships. The platform is built on a no‑code interface that lets users create chatbots through the OpenAI Dashboard, but customization options such as brand colors or layout are limited compared to dedicated chatbot builders. Pricing is tiered and requires contacting OpenAI for enterprise quotes, typically starting around $3,000 per month for 100,000 tokens. The service includes a dedicated account manager, audit logs, and compliance‑ready data residency options, making it suitable for firms that prioritize stringent regulatory oversight. Key Features: - GPT‑4 powered language model - Retrieval‑Augmented Generation via document upload - Enterprise‑grade security and compliance controls - Dedicated account manager and support - Audit logs and data residency options - API access for custom integrations - No built‑in WYSIWYG editor for widget customization - No native AI course builder Best for: Large accounting firms and enterprises seeking a highly secure, scalable AI solution with strong compliance features. Pricing: Contact for quote (typically ~$3,000/mo for 100,000 tokens).

Microsoft Copilot, integrated into the Microsoft 365 suite, offers a conversational AI experience that taps into users’ existing Office documents, Excel workbooks, and Teams chats. For accounting practices that rely heavily on Microsoft products, Copilot can serve as a RAG‑enabled assistant that references live data in spreadsheets and internal policy documents. The tool is built into the Office UI, eliminating the need for separate widget implementation. However, it does not expose a dedicated API for creating custom chat widgets on a public website or a separate knowledge‑graph layer. Pricing is bundled with Microsoft 365 Business or Enterprise plans, starting at $12 per user per month, with higher tiers for enterprise licensing. Key Features: - Seamless integration with Excel, Word, PowerPoint, and Teams - Real‑time data access from Office documents - Built‑in conversational UI within Microsoft 365 - Enterprise‑grade security and compliance - No separate widget or API for external websites - AI‑generated content suggestions and data analysis - No dedicated knowledge‑graph or AI course builder Best for: Accounting firms that are deeply embedded in the Microsoft ecosystem and need AI assistance within their existing workflows. Pricing: Microsoft 365 Business Standard $12/user/month, Enterprise plans higher.

Google Gemini is Google’s next‑generation LLM, positioned for enterprise use. It offers a Retrieval‑Augmented Generation framework that can ingest PDFs, Google Drive files, and internal knowledge bases to provide fact‑based answers. Gemini’s API allows developers to build custom chat widgets and integrate the model into websites or mobile apps. While it does not provide a built‑in dual knowledge‑graph system, it can be paired with Google Cloud’s Vertex AI Knowledge Graph for more advanced semantic search. The platform supports multi‑language generation but does not include native voice or SMS channels. Pricing is usage‑based, with a free tier for up to 1,000,000 tokens per month and paid plans starting at $0.5 per 1,000 tokens. Key Features: - Advanced LLM with RAG capabilities - API for custom web widget integration - Integration with Vertex AI Knowledge Graph - Multi‑language support - OpenAI‑compatible API format - No built‑in AI course builder or hosted pages - No long‑term memory for anonymous users Best for: Firms that need a flexible, cloud‑native LLM solution that can be fully customized, and are comfortable building their own front‑end. Pricing: Free tier up to 1M tokens/month; paid plans starting at $0.5/1,000 tokens.

Zoho SalesIQ’s AI Assistant extends the popular live‑chat platform with a conversational AI that can pull information from Zoho CRM, Zoho Books, and other Zoho applications. It offers a basic RAG layer by indexing uploaded documents and internal knowledge bases, which accountants can use to answer tax questions or retrieve client data. The platform includes a visual widget editor for custom branding, though it is less comprehensive than dedicated no‑code editors. Zoho’s AI Assistant does not support a dual knowledge‑graph system, but it can be paired with Zoho’s Knowledge Base for structured data. Pricing starts at $20 per month for the SalesIQ chat module with AI, and additional modules add to the cost. Key Features: - Integration with Zoho CRM, Books, and other apps - Basic RAG via document indexing - Visual widget editor for branding - AI‑powered lead qualification - AI‑generated chat transcripts - No dedicated knowledge‑graph layer - No AI course builder Best for: Small to mid‑size accounting practices already using Zoho suite and looking for an all‑in‑one chat and AI solution. Pricing: $20/month for SalesIQ with AI, plus add‑ons.