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📖 The AI Tool Bible

AI custom chatbot builder

Editorial picks for "ai chatbot builder".

48 tools

All Fine-tuning →
LA

LangGraph

Featured
Agents · BYO (Claude / GPT / open)
8.8

Stateful, graph-based agent orchestration from LangChain.

Freemium· Developer: $0 / seat · Plus: $39 / seat · Enterprise: Custom pricingstateful agentshuman-in-loop
PI

Pinecone

Featured
RAG · Hosted vector DB (not an LLM)
8.8

Managed vector database for production-scale similarity search.

Freemium· Starter: Free · Builder: $20/month flat · Standard: $50/month min. usage · Enterprise: $500/month min. usagemanaged vector DBproduction RAG
LL

LlamaIndex

Featured
RAG · BYO (Claude / GPT / open)
8.7

Data framework for connecting LLMs to your data.

Freemium· Free open-source; LlamaCloud paidRAGdata ingestion
RA

Replit Agent

Featured
Coding · Multi-model (Claude / GPT configurable)
8.7

Build & deploy a full app from a single prompt.

Freemium· Basic: $20 · Pro: $50 · Enterprise: Contact salesprototypesinternal tools
CR

CrewAI

Featured
Agents · BYO (Claude / GPT / open)
8.4

Python framework for multi-agent orchestration.

Freemium· Basic: Free · Enterprise: Custommulti-agentorchestration
AB

AWS Bedrock

Agents · Multi-model: Anthropic Claude, Meta Llama, Mistral, Cohere, AI21, Amazon Nova/Titan, DeepSeek, Stability, OpenAI GPT
8.6

Build and scale generative AI applications with foundation models

Paid· Standard: Contact sales · Flex: Contact sales · Priority: Contact sales · Reserved: Contact salesEnterprise RAG chatbot over private documentsMulti-step tool-using agents via AgentCore
CA

Claude Agent SDK

Agents · Claude Opus / Sonnet
8.6

Anthropic's official SDK for building autonomous Claude agents.

Free· Free SDK; API usage billed at Claude ratesClaude agentstool use
DA

DataStax Astra DB

RAG · Bring-your-own embeddings; integrates with OpenAI, Cohere, Hugging Face, Mistral, NVIDIA NIM, and Vertex AI via server-side vectorize
8.6

Serverless vector and document database for production RAG and AI agents

Freemium· Small On-Demand: Contact sales · Medium (Balanced): Contact sales · Medium (Storage Optimized): Contact sales · Large (Balanced): Contact sales · Large (Storage Optimized): Contact salesRAG chatbot over enterprise documentsAgent long-term memory store
GV

Google Vertex AI

Agents · Gemini 2.5 (Pro/Flash/Nano), Imagen, Veo, Chirp, plus Model Garden (Llama, Mistral, Claude via partner)
8.6

Google Cloud's unified platform for building, deploying, and scaling enterprise AI agents and models.

Paid· Image Data - Training (Classification): $3.465 / 1 hour · Image Data - Training (Object Detection): $3.465 / 1 hour · Image Data - Deployment and Online Prediction: $1.375 / 1 hour · Image Data - Batch Prediction: $2.222 / 1 hour · Tabular Data - Training (Classification/Regression): $21.252 / 1 hourEnterprise RAG chatbotMulti-agent customer service
IW

IBM watsonx

Agents · IBM Granite (3.x, Code, Time Series), Meta Llama 3.x, Mistral, plus other curated open models
8.6

Enterprise AI platform for building, deploying, and governing models and agents

Enterprise· watsonx.ai has a free tier on IBM Cloud with limited tokens; paid usage is metered per 1M tokens by model family (Granite, Llama, Mistral, etc.). watsonx.governance and watsonx.data are quoted per environment. Enterprise deals via IBM sales; on-prem/Cloud Pak for Data is separately licensed.Enterprise RAG chatbot over private documentsCustomer service agents with guardrails
MA

MongoDB Atlas Vector Search

RAG · Bring-your-own embeddings (OpenAI, Cohere, open models); native Voyage AI embeddings and rerankers
8.6

Vector search built into the operational database you're already using.

Freemium· Free: $0 · Flex: Up to $30 · Dedicated: Starts at $56.94RAG over enterprise documentsProduct and content recommendation engines
PA

Palantir AIP

Agents · Multi-model (GPT, Claude, Llama, customer-hosted)
8.4

Enterprise AI platform that grounds LLMs in your operational data and runs agents against real business systems.

Enterprise· Contact sales; typically bundled with Foundryenterprise-agentsoperational-ai
QU

Quivr

RAG · Multi-model (OpenAI, Anthropic, Mistral, Gemma)
8.4

Open-source RAG framework for building custom AI assistants over your own documents in a few lines of Python.

Free· Open source (pip install quivr-core); pay only for LLM/vector-store usagedocument-qacustom-knowledge-base
SK

Semantic Kernel

Agents · Multi-model
8.4

Microsoft's open-source SDK for wiring LLMs, plugins, and agents into enterprise .NET, Python, and Java apps.

Free· Free, MIT-licensed SDK; you pay for the underlying model APIsagent-orchestrationllm-plugins
WE

Weaviate

RAG · Hosted vector DB (not an LLM)
8.4

Open-source vector DB with hybrid search and modules.

Freemium· Free: $0 · Flex: $45 · Premium: $400self-hosted RAGhybrid search
Y0

Yi (01.AI)

Agents · Yi-Lightning (MoE), Yi-Large, Yi-1.5 (6B/9B/34B), Yi-VL, Yi-Coder — in-house 01.AI foundation models
8.4

Foundation models from 01.AI — open-weight Yi family plus frontier Yi-Lightning and Yi-Large

Freemium· Open-source Yi models free under permissive license; hosted API via platform.lingyiwanwu.com with pay-per-token pricing (Yi-Lightning positioned as a low-cost frontier tier; Yi-Large priced higher; exact per-token rates on the platform dashboard). Enterprise custom-training and consulting on quote.Self-hosted coding assistantBilingual English-Chinese chatbot
LA

LangChain

RAG · BYO (any major LLM)
8.3

The broad LLM application framework — chains, agents, retrievers.

Freemium· Free open-source; LangSmith paidgeneral LLM appsRAG
N8

n8n

Agents · Multi-model
8.3

Source-available workflow automation with first-class AI-agent and RAG building blocks.

Freemium· Starter: 20€ · Pro: 50€ · Business: 667€ · Enterprise: Contact Salesai-agentsworkflow-automation
GA

Google AI Studio

Coding · Gemini 2.5 Pro / Flash, Imagen, Veo
8.2

Browser-based playground and API console for prototyping with Google's Gemini models.

Freemium· Free tier with rate limits; paid via Gemini API usage-based pricingprompt-prototypinggemini-api-keys
LI

LibreChat

Writing · Multi-model (OpenAI, Anthropic, Google, AWS Bedrock, Azure, Ollama, and others)
8.2

Open-source, self-hostable ChatGPT-style frontend that brings every major LLM provider under one roof.

Free· Free and open source; self-hosted (you pay model providers for API usage)multi-model chatself-hosted chatgpt
LO

Lovable

Coding · Undisclosed (multi-model)
8.2

Chat-driven app builder that turns natural-language prompts into deployable full-stack web apps.

Freemium· Free: Free · Pro: ? · Business: ?app-prototypingno-code-webapps
PO

Poe

Writing · Multi-model (GPT, Claude, Gemini, DeepSeek, FLUX, Sora, others)
8.2

One subscription, every frontier model - Quora's multi-model chat hub with bots, image, video, and audio generation.

Freemium· Basic: $10 · Pro: $20 · Enterprise: Contact salesmulti-model chatimage generation
SI

Sim

Agents · Multi-model (Claude, OpenAI, Google)
8.2

Open-source visual workspace for building, deploying, and monitoring AI agents.

Freemium· Free: $0 · Pro: $25 · Max: $100 · Enterprise: Customagent-workflowsinternal-automation
CH

Chroma

RAG · Hosted vector DB (not an LLM)
8.1

Embedded, developer-friendly vector store for Python.

Freemium· Starter: $0 · Team: $250 · Enterprise: Customprototypingembedded RAG
LA

Langflow

Agents · Multi-model
8.1

Open-source visual builder for LangChain-style AI agents and RAG pipelines.

Freemium· Open-source free; hosted free tier + paid enterprise via DataStaxagent-prototypingrag-pipelines
MA

Mastra

Agents · Multi-model (90+ providers)
8.1

Open-source TypeScript framework for building, deploying, and observing AI agents and workflows.

Freemium· Starter: $0 · Teams: $250 · Enterprise: Custom pricingai-agentsworkflow-orchestration
MI

MiniMax

Agents · MiniMax M3, Hailuo 2.3, Speech 2.8, Music 2.6
8.0

Chinese frontier-model lab shipping multimodal foundation models with a 1M-context coding/agent stack.

Freemium· Free tier; Token plan from ~$20/mo (~12.5B tokens); enterprise pricing on requestcoding-agentlong-context
RI

Rivet

Agents · Multi-model
8.0

Open-source visual IDE for building and debugging LLM agent graphs.

Free· Free and open source (MIT)agent-orchestrationprompt-chaining
AN

AnythingLLM

RAG · Multi-model
7.9

Open-source desktop and self-hosted app that turns your documents into a private chat-and-agent workspace.

Freemium· Basic: $50/monthly · Pro: $99/monthly · Enterprise: Contact Usdocument-chatprivate-rag
DA

DataRobot

Agents · Multi-model
7.8

Enterprise platform for building, deploying, and governing AI agents alongside classic predictive ML.

Enterprise· Contact sales; free trial availableenterprise-agentspredictive-ml
TY

TypingMind

Writing · Multi-model (GPT, Claude, Gemini, Mistral, DeepSeek, local)
7.7

BYOK chat frontend that puts GPT, Claude, Gemini, and local models behind one polished UI.

Paid· Standard: $39 · Extended: $79 · Premium: $99multi-model-chatprompt-library
AU

AutoGPT

Agents · BYO (Claude / GPT / open)
7.5

Open-source platform for building autonomous AI agents.

Free· Free / open-source; hosted platform paidautonomous agentstask automation
LC

Langchain-Chatchat

RAG · Multi-model (GLM-4, Qwen2, Llama 3, etc. via Xinference/Ollama/LocalAI/FastChat)
7.4

Self-hostable RAG and agent framework that wires LangChain to any local open-source LLM and a knowledge base.

Free· Apache-2.0 open source; self-hosted, infra costs onlyprivate-knowledge-baseoffline-rag
MC

Model Context Protocol

Agents · Model-agnostic
7.4

Open standard that lets AI apps plug into data sources, tools, and workflows like USB-C for LLMs.

Free· Free and open source (MIT)agent-toolingide-integrations
OS

OpenAI Swarm

Agents · OpenAI models (designed for, but extensible)
7.4

Lightweight multi-agent orchestration in Python.

Free· Free / open-sourceeducationprototyping
AG

Agentset

RAG · Multi-model (Claude, OpenAI, Google, xAI, Cohere, Mistral, DeepSeek)
7.3

Production-ready RAG infrastructure with agentic search, citations, and model-agnostic plumbing.

Freemium· Free: $0 · Pro: $49 · Enterprise: Customdocument-qaagentic-search
AS

AstrBot

Agents · Multi-model (OpenAI, Anthropic, Gemini, DeepSeek, Ollama, Dify, Coze)
7.3

Open-source agentic AI assistant that bridges chat platforms like Telegram, Discord, and QQ with any LLM and a 1000+ plugin ecosystem.

Free· Free, open-source (AGPL-3.0); self-hosted, you pay your own LLM API costs.chatbotgroup-chat-assistant
EP

Epsilla

RAG · Multi-model
7.3

Agent-as-a-Service platform with managed RAG and a no-code builder for vertical enterprise AI.

Freemium· Free Tier: $0/month · Starter Tier: $29/month · Professional Tier: $249/month · AI Concierge: $2,499/month · Enterprise Tier: Custom/monthenterprise-ragai-agents
AF

Agno (formerly Phidata)

Agents · Multi-model
7.2

Open-source Python framework for building multi-agent systems, paired with a production runtime that ships in your own cloud.

Freemium· Free: Free · Pro: $150/mo · Enterprise: ?
AF

AI-Flow

Agents · Multi-model (OpenAI, Anthropic, Google, Replicate, xAI)
7.2

Visual node-based builder for chaining OpenAI, Anthropic, Replicate and other model APIs into content pipelines.

Freemium· Free tier: 25 welcome credits + 20 BYOK runs/day; paid plans for extended storageworkflow-automationcontent-pipelines
AS

AI SDK

Coding · Multi-model
7.2

Vercel's open-source TypeScript framework for building AI apps across 16+ providers with unified streaming, tools, and UI hooks.

Free· Open source (Apache 2.0); pay only for the underlying model APIschat-uiagent-building
CH

Chainlit

Agents · Multi-model
7.2

Open-source Python framework for building production-grade conversational AI interfaces in minutes.

Free· Open-source (Apache 2.0); optional paid Literal AI observability tierchatbot-uiagent-frontend
CS

Cherry Studio

Agents · Multi-model
7.2

Open-source desktop AI client that wires 300+ LLMs into one chat, knowledge-base, and agent workspace.

Free· Free and open source; bring your own API keysmulti-model chatlocal knowledge base
CO

Cognee

RAG · Multi-model (Claude, OpenAI, others)
7.2

Open-source graph-memory layer that gives AI agents persistent, queryable context across sessions.

Freemium· Hobby free (1M tokens/mo); Growth $5/workspace/mo + token usage; Enterprise customagent-memoryknowledge-graphs
CS

Coze Studio

Agents · Multi-model
7.2

Self-hostable visual AI agent development platform from ByteDance with workflows, RAG, and plugin tooling.

Free· Free, Apache 2.0; self-hostedai-agentsworkflow-automation
GE

Geniusrise

Agents · Multi-model
7.2

Open-source framework for building, deploying, and scaling AI microservices across text, vision, and audio.

Free· Free, open source; self-hostedinference-servingfine-tuning
GR

Graphiti

RAG · Multi-model
7.2

Open-source temporal knowledge graph framework for building agent memory that updates in real time.

Freemium· Basic: $10 · Pro: $20 · Enterprise: $50agent-memorytemporal-knowledge-graphs
NE

Nexent

Agents · Multi-model (OpenAI-compatible: any LLM/Embedding/VLM/STT/TTS)
7.2

Open-source, zero-code platform for spinning up production-grade AI agents from a single natural-language prompt.

Free· Free, open-source (MIT); self-hosted infra + model API costs applymulti-agent-orchestrationzero-code-agents