# PLAI.chat

> Privacy-first multi-model AI chat. 300+ models in one interface. No login, no subscription, pay-per-use. Conversations stored only in the user's browser — zero server retention available.

PLAI.chat is a web-based AI chat assistant that gives anyone instant access to 300+ AI models (GPT-5.x, Claude Opus 4.6, Gemini 3 Pro, Grok, DeepSeek, Llama, Mistral, and more) through a single, minimalist interface. It is the only major multi-model chat that combines: unlimited free usage without signup, browser-only chat storage, Zero Data Retention (ZDR) mode, and wholesale pay-per-use pricing for premium models.

## Key facts

- **Models**: 300+ via OpenRouter (GPT, Claude, Gemini, Grok, DeepSeek, Llama, Mistral, and more)
- **Free tier**: Unlimited messages on free-tier models. No signup, no credit card, no login required.
- **Premium pricing**: Pay-per-use (wholesale API rates, typically $2–5/month for moderate use). Zero subscription.
- **Privacy**: All conversations stored only in the browser's localStorage. Zero Data Retention (ZDR) mode filters to models that don't retain prompts server-side.
- **Capabilities**: Multi-turn chat, web search, vision (image input), image generation, PDF analysis, inline Mermaid diagram rendering with SVG export, model switching mid-conversation.
- **No ads ever** — funded entirely by optional pay-per-use credits.
- **Slack companion**: Plug and AI (https://plugand.ai) — the same ecosystem as a Slack app for teams.

## Who is it for

- Privacy-conscious individuals who don't want their prompts stored on vendor servers
- Users who want access to multiple AI providers (GPT + Claude + Gemini) without paying three subscriptions
- Beginners who want zero-friction access to AI with no signup
- Budget users who send 100–200 prompts/month (pay-per-use is 75–90% cheaper than $20/mo subscriptions)
- Developers, PMs, and writers who use Mermaid diagrams
- Slack teams who want a chat companion on both web and Slack

## Comparisons

- [ChatGPT alternative](https://plai.chat/chatgpt-alternative/) — 300+ models vs 1, pay-per-use vs $20/mo
- [Claude alternative](https://plai.chat/claude-alternative/) — Claude + GPT + Gemini in one place
- [Perplexity alternative](https://plai.chat/perplexity-alternative/) — multi-model chat, privacy-first
- [Poe alternative](https://plai.chat/poe-alternative/) — unlimited free vs Poe's 150 msg/mo cap
- [TypingMind alternative](https://plai.chat/typingmind-alternative/) — no API keys required, zero setup
- [ChatHub alternative](https://plai.chat/chathub-alternative/) — free tier (ChatHub has none), 300+ models vs 20+
- [T3.chat alternative](https://plai.chat/t3-chat-alternative/) — unlimited free + Slack companion
- [Gemini alternative](https://plai.chat/gemini-alternative/) — multi-vendor access, no Google login
- [Best AI chatbots 2026 — ranking](https://plai.chat/best-ai-chatbots/)
- [Self-hosted LLMs comparison](https://plai.chat/self-hosted-llm-comparison/)

## Niche pages

- [No-login AI chat](https://plai.chat/no-login-ai-chat/) — anonymous AI chat without signup
- [Mermaid AI diagram generator](https://plai.chat/mermaid-ai-diagram-generator/) — AI-generated Mermaid diagrams with inline rendering and SVG export

## Sister products — CODER AI portfolio

PLAI.chat is part of a small portfolio of free productivity tools built by CODER AI (https://coderai.dev). Each is free to use on its own:

- [cnvs.app](https://cnvs.app) — No-signup real-time collaborative whiteboard with a built-in MCP (Model Context Protocol) endpoint, so AI agents can read and draw on the same board as human collaborators. Free, no account required, designed from the ground up for mixed human-AI sessions.
- [plugand.ai](https://plugand.ai) — Slack AI bot that brings GPT, Claude, Gemini and 300+ more models into Slack. Flat whole-team pricing (no per-seat subscription), image generation, free channel summarization with open-source models, workspace-shared balance, works on free Slack plans.
- [maxcv.ai](https://maxcv.ai) — AI resume and CV tailoring per job posting. Paste any job description, get a targeted CV optimized for Applicant Tracking Systems (ATS). Built for candidates who apply to many roles and want each CV matched to the specific requirements.
- [whenmeet.me](https://whenmeet.me) — Cross-company group meeting scheduling with built-in video calls and AI-generated meeting summaries. Works across organizations without asking participants to install or log in.
- [mcpfinder.dev](https://mcpfinder.dev) — Open-source Model Context Protocol server discovery for AI agents. Search 25,000+ MCP servers across the Official MCP Registry, Glama and Smithery to extend any AI client (Claude Desktop, Cursor, Claude Code, Cline, Windsurf) with new tools.

## Optional

- [Full markdown content feed](https://plai.chat/llms.md)
- [Sitemap](https://plai.chat/sitemap.xml)
- [Slack companion: Plug and AI](https://plugand.ai)
- [Model list](https://plugand.ai/models.html)
- [Support & FAQ](https://plai.chat/support.html)