Widgent vs FastBots
FastBots is a no-code multi-channel chatbot for SMBs. Widgent is a programmable AI agent for SaaS developers — with tool-calling, BYOK, and user identity.
Try Widgent free →- Tool-calling — call any API or function
- Bring your own LLM key (BYOK)
- JWT identity per user
- From $0 / month
- Q&A from docs — no tool-calling
- No BYOK — platform-managed model
- WhatsApp · Telegram · Slack · web
- Paid plans, no free tier
Why developers choose Widgent
Tool-calling — actions, not just answers
FastBots trains on your documents and answers questions across channels. Widgent goes further: define tools that the AI can call — navigate your app, fetch live data from an API, update records. That's the difference between a chatbot and an agent that works inside your product.
Your key, your model, your cost
FastBots controls the LLM stack and bills you per their model. With Widgent, you connect your own OpenAI, Anthropic, Gemini, or OpenRouter key. You pick the model. You see the cost directly on your provider invoice — no middleman markup.
Identity — the agent knows your users
FastBots has no concept of per-user identity. Widgent supports signed JWT tokens minted by your backend — the agent receives them and can be given context about the specific user: their plan, permissions, and account data. Essential for any personalized SaaS experience.
Headless mode for custom UI
FastBots gives you fixed widgets per channel. Widgent's headless mode lets you build any UI — command palette, inline panel, custom drawer — while Widgent handles streaming, session management, tool execution, and RAG behind the scenes.
Feature comparison
| Feature | Widgent | FastBots |
|---|---|---|
| Primary use case | AI agent inside your SaaS product | Multi-channel chatbot for SMBs |
| Real tool-calling | ✓ Client + server tool execution | ✗ Q&A from documents only |
| Bring your own LLM key | ✓ OpenAI · Anthropic · Gemini · OpenRouter | ✗ FastBots manages the LLM |
| Zero token markup | ✓ Flat fee — pay provider directly | ✗ Per-message / per-plan pricing |
| User identity (JWT) | ✓ Signed per-user JWT | ✗ No user identity layer |
| Embed types | Bubble · Sidebar · Popup · Inline · Headless | Bubble (website) + WhatsApp · Telegram · Slack |
| RAG (knowledge base) | ✓ Upload docs, auto-chunked | ✓ Train on docs + website content |
| Headless mode | ✓ Full custom UI support | ✗ Fixed widgets per channel |
| Multi-channel (WhatsApp) | ⚠ Via server tools (custom) | ✓ Built-in WhatsApp / Telegram / Slack |
| Model flexibility | ✓ Any OpenAI, Anthropic, Gemini, OpenRouter model | ⚠ GPT-based, platform-managed |
| Coding agent integration | ✓ integrate.md skill + expert API | ✗ Not available |
| Pricing | From $0 (platform fee only) | Paid plans — no public free tier |
| Target user | SaaS developers | SMBs / non-technical teams |
Ship your AI agent today
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