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📖 The AI Tool Bible

AI custom chatbot builder

Editorial picks for "ai chatbot builder".

48 tools

All Fine-tuning
Google Vertex AI preview image
Google Vertex AI logo

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
IBM watsonx preview image
IBM watsonx logo

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
Writer preview image
Writer logo

Writer

Writing · Palmyra (in-house)
8.2

Enterprise generative AI platform built around in-house Palmyra LLMs for regulated, brand-consistent content.

Enterprise· Starter: Free · ENTERPRISE: Contact salesenterprise-writingbrand-voice
Epsilla preview image
Epsilla logo

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
AgentDock preview image
AgentDock logo

AgentDock

Agents
7.1

Omnichannel AI customer service platform with memory, intelligent handoff, and explainable decisions.

Paid· Free: $0 · Unlimited: $39customer-supportomnichannel-chat
ElizaOS preview image
ElizaOS logo

ElizaOS

Agents · Multi-model (BYO via plugins)
7.1

Open-source agentic OS for building and orchestrating multi-agent swarms across Discord, Telegram, X, and onchain.

Free· Free, open-source (self-hosted); bring your own model API keysmulti-agent-swarmssocial-bots
Tiledesk preview image
Tiledesk logo

Tiledesk

Agents · Multi-model
7.1

Open-source conversational AI platform for building multi-channel support agents and automation workflows.

Freemium· 14-day free trial; freemium, paid, and enterprise tierscustomer-supportrag-knowledge-base
Chatfuel preview image
Chatfuel logo

Chatfuel

Agents · Undisclosed (LLM-backed agents)
7.0

AI messaging agents for WhatsApp, Instagram, Facebook, and TikTok built for small-business sales and bookings.

Freemium· Chatfuel Light: Free · AI PRO: $49whatsapp-automationinstagram-dm
GaliChat preview image
GaliChat logo

GaliChat

RAG
7.0

No-code AI chatbot builder that trains on your website content for support and lead capture.

Freemium· pro: $19 · business: $99 · enterprise: $999 · Free Demo: Freecustomer-supportlead-generation
Hexabot preview image
Hexabot logo

Hexabot

Agents · Multi-model
7.0

Self-hostable visual workflow builder for shipping production conversational and agentic AI.

Freemium· Community free; Starter $19/mo; Pro $59/mo; Unlimited $149/mo; Enterprise customconversational-aiworkflow-automation
RAGs by LlamaIndex preview image
RAGs by LlamaIndex logo

RAGs by LlamaIndex

RAG · Multi-model (OpenAI, Anthropic, Replicate, HuggingFace)
7.0

Open-source Streamlit app that builds a custom RAG pipeline from a natural-language brief.

Free· Free, MIT-licensed; bring your own model/API keysnatural-language-rag-builderdocument-qa
GPT Builder preview image
GPT Builder logo

GPT Builder

Agents · OpenAI GPT-4o / GPT-5 (plan-dependent)
6.9

OpenAI's no-code editor for spinning up custom ChatGPT agents with instructions, knowledge files, and tool calls.

Paid· Basic: $10 · Standard: $20 · Premium: $30custom-chatbotsinternal-assistants
MindPal preview image
MindPal logo

MindPal

Agents · Multi-model
6.9

No-code platform for building and orchestrating teams of AI agents that automate business workflows.

Freemium· Free tier; paid plans for higher usage and team seatsmulti-agent-workflowsbusiness-automation
GPTHelp.ai preview image
GPTHelp.ai logo

GPTHelp.ai

Agents · Multi-model (GPT / Claude)
6.8

No-code site-trained chatbot builder that swallows your URL and spits out an embeddable support widget.

Freemium· Starter: $19 · Growth: $49 · Premium: $99 · Business: $270website-chatbotcustomer-support
Ailin preview image
Ailin logo

Ailin

Agents · Multi-model — routes to OpenAI, Anthropic Claude, Google Gemini, and customer-supplied custom models

One prompt, every AI model — plus a no-code builder for agents and workflows

Paid· Basic: $20 · Pro: $50 · Enterprise: Contact salesinternal knowledge-base chatbotmulti-model prompt A/B testing
Anakin preview image
Anakin logo

Anakin

Agents · GPT-4o, Claude 3.5 Sonnet, Gemini 1.5, DeepSeek, Mistral, Llama 3

One platform, every model — no-code AI apps and agents

Freemium· Free: $0 · Basic: $9.90 · Pro: $19.90 · Premium: $39.90Multi-model chatbotRAG document assistant
Dify preview image
Dify logo

Dify

Agents · Model-agnostic: OpenAI (GPT-4o, GPT-4.1), Anthropic Claude, Google Gemini, Mistral, Cohere, Ollama, and any OpenAI-compatible endpoint

Open-source LLMOps platform for building agentic workflows, RAG pipelines, and AI applications

Freemium· Professional: $590 · Team: $1590 · Sandbox: Free · Enterprise: Custom · Community: FreeRAG chatbot over internal documentsCustomer support automation
Relevance AI preview image
Relevance AI logo

Relevance AI

Agents · Multi-model: Claude (Opus/Sonnet/Haiku), OpenAI GPT, Google Gemini, plus open-weight options (Kimi K2, GLM)

Build and deploy an AI workforce of specialized agents across your business tools

Enterprise· Free trial available via the app. Paid tiers are quote-based (Enterprise): custom actions, unlimited agents/tools/users, dedicated account manager. Reported customer benchmarks cite an average cost of ~$0.09 per task at scale; no fixed public tier pricing.Outbound prospect research and personalisationMeeting prep and CRM hygiene
Sierra preview image
Sierra logo

Sierra

Agents · Undisclosed multi-model (frontier LLMs orchestrated behind Sierra's Agent OS)

Conversational AI agents for enterprise customer experience.

Enterprise· Basic: $10 · Pro: $20 · Enterprise: Contact salesEnterprise customer support agentVoice IVR replacement
Tavily preview image
Tavily logo

Tavily

RAG · GPT-4

One secure API for real-time web access for AI agents

Freemium· Researcher: Free · Pay As You Go: $0.008 · Project: $01234567890123456789 · Enterprise: CustomRAG chatbot groundingAutonomous research agents
Vectara preview image
Vectara logo

Vectara

RAG · In-house Boomerang (retrieval) and Mockingbird (generation) plus BYOM for GPT, Claude, Gemini, and open-weight LLMs

Enterprise agent platform with built-in retrieval, grounding, and hallucination controls

Enterprise· SaaS: $100K/ year · VPC: $250K/ year · On-prem: $500K/ yearEnterprise knowledge-base searchGrounded customer-support chatbots
Ernie Bot preview image
Ernie Bot logo

Ernie Bot

Agents · Baidu ERNIE 4.0 / ERNIE X1 / ERNIE Turbo (in-house)
8.7

Baidu's Mandarin-first ChatGPT rival, powered by the ERNIE model family

Freemium· Free tier for Ernie 3.5 access; Ernie 4.0 and premium features require a paid subscription (approximately CNY 59.9/month for individual plans); enterprise API pricing via Baidu AI Cloud Qianfan platform is metered per 1K tokens.Mandarin content writing and marketing copyChinese-language document Q&A and summarisation
Moveworks preview image
Moveworks logo

Moveworks

Agents · Orchestrates multiple enterprise-ready LLMs (undisclosed mix, historically including OpenAI GPT and in-house models via its Reasoning Engine)
8.7

The enterprise AI assistant that searches, answers, and takes action across your business systems

Enterprise· Enterprise-only pricing; no public tiers. Quoted per organization based on employee count, integrations, and agent scope. Contact sales for a quote.IT service desk ticket deflectionHR policy Q&A and self-service
Snowflake Cortex preview image
Snowflake Cortex logo

Snowflake Cortex

RAG · Anthropic Claude, Meta Llama, Mistral Large 2, Snowflake Arctic
8.7

Generative AI and RAG built into the Snowflake data cloud

Enterprise· Standard: Contact sales · Enterprise: Contact sales · Business Critical: Contact sales · Virtual Private Snowflake: Contact salesEnterprise RAG chatbot over governed dataNatural-language SQL for business analysts
AWS Bedrock preview image
AWS Bedrock logo

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
Doubao preview image
Doubao logo

Doubao

Agents · Doubao Seed 2.1 Pro (in-house ByteDance), with Seed 2.0 / 1.5 on free tier
8.5

ByteDance's flagship AI assistant with a real agent mode and one of the largest user bases outside ChatGPT

Freemium· Free tier (chat, search, writing, image gen, voice/video chats) / Doubao Pro RMB 68/mo (~$9.40) / RMB 200/mo (~$27.80) / RMB 500/mo (~$69.40). API: 6 yuan per 1M input tokens, 30 yuan per 1M output tokens for Doubao 2.1 Pro (cache-hit as low as 1.2 yuan).Long-document PDF and Office file summarizationAutonomous browser and local-computer agent tasks
ChatGLM (Zhipu Qingyan) preview image
ChatGLM (Zhipu Qingyan) logo

ChatGLM (Zhipu Qingyan)

Agents · GLM-4, GLM-4V, GLM-4-Air/Flash, CogView, CogVideoX (ChatGLM family, Zhipu AI / Tsinghua KEG)
8.4

Zhipu AI's bilingual ChatGLM assistant with agents, code, image and video generation

Freemium· Free consumer tier (chatglm.cn); paid API tiers via Zhipu Open Platform (bigmodel.cn) priced per million tokens by model (GLM-4, GLM-4-Air, GLM-4-Flash, GLM-4V, CogVideoX); enterprise/private deployment on requestChinese-language document drafting and rewritingChinese-English translation and localisation
Yi (01.AI) preview image
Yi (01.AI) logo

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
Sim preview image
Sim logo

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
Athina AI preview image
Athina AI logo

Athina AI

Evaluation · Multi-model
8.1

Collaborative LLM evaluation and observability platform for teams shipping AI features to production.

Freemium· Starter free (10k logs/mo); Pro & Enterprise customllm-evaluationprompt-management
ElevenLabs Conversational AI preview image
ElevenLabs Conversational AI logo

ElevenLabs Conversational AI

Audio · ElevenLabs Scribe (ASR) + pluggable LLM + ElevenLabs TTS
8.1

Production-grade voice agent platform layering ElevenLabs TTS, ASR, and LLM orchestration into a single deployable stack.

Paid· Free: $0 · Starter: $6 · Creator: $11 · Pro: $99 · Scale: $299voice-agentsivr-replacement
Langflow preview image
Langflow logo

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
RAGFlow preview image
RAGFlow logo

RAGFlow

RAG · Multi-model
8.1

Open-source RAG engine with deep document parsing, hybrid search, and visual agent orchestration.

Freemium· Free tier; Starter $29/mo; Pro $129/mo; Enterprise customdocument-qaenterprise-search
ChatGPT preview image
ChatGPT logo

ChatGPT

Writing · GPT-4o, GPT-4.1, o-series reasoning models
8.0

OpenAI's flagship conversational assistant, and the default benchmark every other chatbot is measured against.

Freemium· Basic: $10 · Pro: $20 · Enterprise: Contact saleswritingcoding
PromptHub preview image
PromptHub logo

PromptHub

Writing · Multi-model (OpenAI, Anthropic, Google, Meta, Mistral, Bedrock, Azure)
8.0

Git-style prompt management, testing, and deployment platform for teams running multiple LLMs in production.

Freemium· Free signup; paid team plans (contact sales / in-app)prompt-managementprompt-versioning
AstrBot preview image
AstrBot logo

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
CogVideoX preview image
CogVideoX logo

CogVideoX

Video · CogVideoX / CogVideoX1.5 (diffusion transformer)
7.3

Open-source text-to-video and image-to-video diffusion transformer from Zhipu AI, runnable on consumer GPUs.

Free· Open-source weights; commercial API via bigmodel.cntext-to-videoimage-to-video
MathEval preview image
MathEval logo

MathEval

Evaluation · GPT-4 grader / DeepSeek-LLM-7B verifier
7.3

Holistic benchmark suite for evaluating mathematical reasoning in large language models.

Free· Free; open-source benchmark with leaderboard submissions via matheval.aillm-math-benchmarkingmodel-leaderboards
AgentMail preview image
AgentMail logo

AgentMail

Agents
7.2

API-first email provider purpose-built for autonomous AI agents.

Freemium· Free: $0/month · Developer: $20/month · Startup: $200/month · Enterprise: Customagent-emailinbox-provisioning
Chainlit preview image
Chainlit logo

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
Cognee preview image
Cognee logo

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
Coze Studio preview image
Coze Studio logo

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
FinChat (Fiscal.ai) preview image
FinChat (Fiscal.ai) logo

FinChat (Fiscal.ai)

RAG · Multi-model (proprietary finance-tuned copilot)
7.2

AI copilot for equity research that reads filings, transcripts, and KPI tables across 100,000+ public companies.

Freemium· Free; Pro $39/mo (annual) or $49/mo; Max and Enterprise API tiers aboveequity-researchearnings-call-analysis
Perplexity AI preview image
Perplexity AI logo

Perplexity AI

RAG · Multi-model (Sonar, GPT-4 class, Claude, Gemini)
7.2

Conversational answer engine that cites its sources by default.

Freemium· Basic: $10 · Pro: $30 · Enterprise: Contact salesai-searchresearch
Taskade preview image
Taskade logo

Taskade

Agents · Multi-model (Claude, GPT, Gemini)
7.2

AI-powered workspace that turns natural-language prompts into apps, agents, and automated workflows.

Freemium· Free tier; paid plans for custom domains, more integrations, and teamsai-agentsworkflow-automation
Veritone Automate Studio preview image
Veritone Automate Studio logo

Veritone Automate Studio

Agents · Multi-model (aiWARE engine ecosystem)
7.2

Low-code workflow builder for orchestrating multi-engine AI pipelines across audio, video, text, and images.

Enterprise· Contact sales; no public pricingmedia-monitoringmetadata-extraction
AlpacaEval preview image
AlpacaEval logo

AlpacaEval

Evaluation · GPT-4 Preview (Nov 2024) as annotator
7.1

Automatic LLM evaluator and leaderboard that benchmarks instruction-following with length-controlled win rates.

Free· Free and open-source; pay only for the underlying OpenAI annotator API callsllm-benchmarkinginstruction-following eval
SiteGPT preview image
SiteGPT logo

SiteGPT

RAG · GPT-4 (per testimonials; not publicly specified)
7.1

Custom GPT-powered support chatbots trained on your website content and docs.

Freemium· Starter: $39 · Growth: $79 · Scale: $259 · Enterprise: Customcustomer-supportwebsite-chatbot