# 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

## 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)