Comparison
88Agents vs re:tune vs Yellow (2026)
Comparing three AI chatbot platforms across 48 features. 88Agents leads re:tune in 24 features and Yellow in 3. 88Agents: AI chatbot and agent platform built for agencies. Bring your own API keys, deploy across web, Slack, and email from one dashboard. re:tune: An AI app-building platform that goes beyond chatbots, offering multi-model support, Telegram and WhatsApp channels, and a generous free tier with up to 10 chatbots. Yellow: An enterprise-grade conversational AI platform that automates customer support and engagement across multiple channels with generative AI.
Quick Verdict
88Agents leads overall with 24 feature advantages to re:tune's 3.
Yellow leads overall with 9 feature advantages to 88Agents's 3.
- 88Agents offers 7 more advanced features features: Bring Your Own Key (BYOK), Fine-Tuning, GDPR Compliance, Team Management, Auto Resync, Show Sources, MCP Support
- 88Agents offers 6 more training sources features: YouTube Transcripts, S3 Buckets, HTTP File Sources, Custom APIs, FAQs, Datasets (CSV/JSON)
- 88Agents offers 5 more core capabilities features: Smart Prompts, Multilingual Support, Analytics, Human Handover, Human Escalation
- re:tune offers 3 more channels features: WhatsApp, Telegram, Zapier
- 88Agents offers 2 more advanced features features: Bring Your Own Key (BYOK), MCP Support
- 88Agents offers 1 more training sources features: YouTube Transcripts
- Yellow offers 6 more channels features: WhatsApp, Telegram, Instagram, Facebook Messenger, Microsoft Teams, Zapier
- Yellow offers 3 more training sources features: Google Drive, E-commerce Integration, Databases
Feature Comparison
| Core Capabilities | 88Agents | re:tune | Yellow |
|---|---|---|---|
| Conversation History View and search past conversations between users and the chatbot. | ✓ | ✓ | ✓ |
| Smart Prompts System-level instructions that shape how the chatbot responds, its tone, and behavior. | ✓ | ✗ | ✓ |
| Multilingual Support Automatically detect and respond in multiple languages via the underlying LLM. | ✓ | ✗ | ✓ |
| Model Switching Switch between different AI models (e.g., GPT-4, Claude) without rebuilding. | ✓ | ✓ | ✓ |
| Analytics Dashboards and reports on conversation volume, resolution rates, and user satisfaction. | ✓ | ? | ✓ |
| Lead Capture Collect visitor contact details (name, email, phone) during conversations. | ✓ | ✓ | ✓ |
| Human Handover Seamlessly transfer a live conversation to a human support agent. | ✓ | ✗ | ✓ |
| Human Escalation Flag conversations for human review when the chatbot can't resolve them. | ✓ | ✗ | ✓ |
| Advanced Features | 88Agents | re:tune | Yellow |
| Alternative LLMs Choose from multiple LLM providers beyond just OpenAI (Anthropic, Google, etc.). | ✓ | ✓ | ✓ |
| Bring Your Own Key (BYOK) Use your own API keys so you pay providers directly — no markup or middleman. | ✓ | ? | ? |
| Fine-Tuning Tune retrieval and response quality — vector store settings, embeddings, chunk size, overlap, and dimensions. | ✓ | ✗ | ✓ Paid |
| GDPR Compliance Data processing and storage practices compliant with EU privacy regulations. | ✓ | ? | ✓ |
| Team Management Invite team members with role-based access control and permissions. | ✓ | ? | ✓ |
| Auto Resync Automatically re-crawl and update knowledge sources on a schedule. | ✓ | ✗ | ✓ |
| Show Sources Display citations and source links alongside chatbot responses. | ✓ | ✗ | ✓ |
| MCP Support Connect to external tools and APIs via the Model Context Protocol for agentic workflows. | ✓ | ✗ | ✗ |
| Agent Mode Go beyond Q&A — run multi-step workflows, use tools, and take actions autonomously. | ✓ | ~ Partial | ✓ |
| Training Sources | 88Agents | re:tune | Yellow |
| Files (PDF, DOCX) Upload documents like PDFs, Word files, and text files as knowledge sources. | ✓ | ✓ | ✓ |
| Website URLs Crawl web pages and use their content to train the chatbot. | ✓ | ✓ | ✓ |
| Sitemap Import an entire site structure via sitemap.xml for bulk crawling. | ✓ | ✓ | ✓ |
| Plain Text Paste or upload raw text content directly as a knowledge source. | ✓ | ✓ | ✓ |
| YouTube Transcripts Extract and index video transcripts from YouTube as training data. | ✓ | ✗ | ✗ |
| Notion Connect a Notion workspace and sync pages as knowledge sources. | ✗ | ✗ | ✗ |
| Google Drive Import documents directly from Google Drive. | ✗ | ✗ | ✓ |
| Dropbox Import documents directly from Dropbox. | ✗ | ? | ✗ |
| S3 Buckets Connect an Amazon S3 bucket and sync files directly as knowledge sources. | ✓ | ✗ | ✓ Paid |
| HTTP File Sources Import files from any public or authenticated URL as a knowledge source. | ✓ | ✗ | ✓ |
| Custom APIs Pull data from your own APIs or third-party services as knowledge sources. | ✓ | ✗ | ✓ |
| E-commerce Integration Connect product catalogs from Shopify, WooCommerce, or similar platforms. | ✗ | ✗ | ✓ Paid |
| Databases Query structured databases directly as a knowledge source. | ✗ | ✗ | ✓ Paid |
| FAQs Import structured question-and-answer pairs for precise, curated responses. | ✓ | ✗ | ✓ |
| Datasets (CSV/JSON) Upload structured data like product catalogs, inventory, or any tabular data as a knowledge source. | ✓ | ✗ | ✓ |
| Channels | 88Agents | re:tune | Yellow |
| Website Widget Embed a chat bubble on your website with a simple code snippet. | ✓ | ✓ | ✓ |
| Chatbot API Programmatic access to send messages and receive responses via REST API. | ✓ | ✗ | ✓ |
| Slack Deploy the chatbot as a Slack app for DMs, channels, and threads. | ✓ | ✗ | ✓ |
| WhatsApp Connect to WhatsApp Business for customer messaging. | ✗ | ✓ | ✓ |
| Telegram Deploy as a Telegram bot for direct and group messaging. | ✗ | ✓ | ✓ |
| Email Respond to incoming emails via IMAP/SMTP integration. | ✓ | ✗ | ✓ |
| Instagram Respond to Instagram DMs automatically. | ✗ | ? | ✓ |
| Facebook Messenger Connect to Facebook Messenger for customer conversations. | ✗ | ? | ✓ |
| Microsoft Teams Deploy as a Microsoft Teams app for internal or external use. | ✗ | ? | ✓ |
| Zapier Connect to thousands of apps via Zapier for automated workflows. | ✗ | ✓ | ✓ |
| Customization | 88Agents | re:tune | Yellow |
| Brand Colors Match the chatbot widget to your brand's color palette. | ✓ | ✓ | ✓ |
| Welcome Message Set a custom greeting shown when the chat opens. | ✓ | ✓ | ✓ |
| Input Placeholder Customize the placeholder text in the message input field. | ✓ | ? | ✓ |
| Bubble Text Add a text label next to the chat bubble launcher. | ✓ | ? | ✓ |
| Launcher Icon Replace the default chat icon with a custom image or avatar. | ✓ | ? | ✓ |
| Custom Personality & Tone Define the chatbot's voice, personality traits, and communication style. | ✓ | ✓ | ✓ |
Pricing Comparison
88Agents
Free tier available
Free Free
5 agents10 MB storage100 chats/mo3 team members
Starter $29/mo
25 agents1 GB storageUnlimited chats5 team members
Pro $99/mo
100 agents10 GB storageUnlimited chats25 team members
Expert $399/mo
250 agents100 GB storageUnlimited chats100 team members
re:tune
Free tier available
Hobby Free
10 chatbots1,000 messages/chatbot5 files/mo
Grow $99/mo
Unlimited messages/users500 files/moWebsite crawling
Max $399/mo
Unlimited chatbots/filesCustom modelsWhite-label
Yellow
Free tier available
Free Free
1 chatbot100 MTU/mo1,000 knowledge records
Enterprise Free
Unlimited chatbotsUsage-based pricingCustom integrationsDedicated support
About Each Platform
88Agents
AI chatbot and agent platform built for agencies. Bring your own API keys, deploy across web, Slack, and email from one dashboard.
- Bring Your Own Keys: Use your own OpenAI, Anthropic, or Google Gemini API keys. Pay providers directly with zero markup.
- Chatbots to Agents: Start with a simple FAQ chatbot, scale into autonomous agents with MCP tool use and multi-step workflows.
- Multi-Channel Deployment: Deploy the same agent across web widget, Slack, and email from a single configuration.
- Rich Knowledge Sources: Train on documents, websites, YouTube transcripts, CSV datasets, FAQs, and more with automatic syncing.
- Multi-Tenant Workspaces: Organize by client or project with isolated settings, API keys, and role-based team access.
re:tune
An AI app-building platform that goes beyond chatbots, offering multi-model support, Telegram and WhatsApp channels, and a generous free tier with up to 10 chatbots.
- Alternative LLM Support: Supports multiple large language models beyond OpenAI, giving you flexibility to choose the best model for your use case and budget.
- Generous Free Tier: Offers 10 chatbots with 1,000 messages per chatbot on the free plan, one of the most generous entry points among competitors.
- Multi-Channel Messaging: Deploys to Telegram, WhatsApp, and Zapier in addition to website widgets, covering the most popular messaging platforms.
- Flexible Training Sources: Trains on files, website URLs, sitemaps, and plain text, covering a solid range of content formats without requiring complex integrations.
- Platform for AI Apps: Positions itself as a broader AI app platform rather than just a chatbot builder, with potential for more complex agent-style workflows.
Yellow
An enterprise-grade conversational AI platform that automates customer support and engagement across multiple channels with generative AI.
- Omnichannel Deployment: Connects to 35+ channels including WhatsApp, voice, email, and web chat for unified customer conversations.
- Enterprise Automation: Handles complex multi-step workflows with AI agents that can take actions, not just answer questions.
- Multilingual at Scale: Supports 135+ languages natively, making it one of the most globally capable platforms available.
- Advanced Analytics: Provides deep insights into bot performance, customer sentiment, and resolution rates with enterprise-grade reporting.
- Human Agent Handover: Seamlessly escalates conversations to live agents with full context when the AI cannot resolve an issue.
Individual Comparisons
Last reviewed: March 2026
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