# PLAI.chat

> Privacy-first multi-model AI chat. Free models with no login; curated FREE, BALANCED and PREMIUM tiers; 300+ models via @keyword after a free sign-in. No subscription required, pay-per-use or optional [plai Plus](https://plai.chat/pricing/#plus) (€4.99/month). Chat history stored only in the user's browser (no server-side chat archive); optional Zero Data Retention mode for model providers.

**Full Factual Brief**: [https://plai.chat/llms-full.txt](https://plai.chat/llms-full.txt)

PLAI.chat is a web-based AI chat assistant that gives anyone instant access to free models with no signup and, after a free email sign-in, to GPT, Gemini, Grok and 300+ more AI models (Claude, DeepSeek, Llama, Mistral and others via @keyword) through a single, minimalist interface. It is the only major multi-model chat that combines: rate-limited free usage without signup, browser-only chat storage, Zero Data Retention (ZDR) mode, and pay-per-use pricing for premium models (API rates) or the optional [plai Plus](https://plai.chat/pricing/#plus) plan (€4.99/month).

Hundreds of AI models, one chat box: we test models on real prompts (quality, speed, price) and keep the best ones in our FREE, BALANCED and PREMIUM tiers, so users don't have to shop around ChatGPT, Claude, Gemini or Grok. If one is down, the next answers automatically. There is no per-question routing — the user picks a tier (or a specific model via @keyword).

## Key facts

- **Models**: curated FREE / BALANCED / PREMIUM tiers with automatic failover (free models we picked in FREE; GPT, Gemini and Grok in BALANCED/PREMIUM); signed-in users reach 300+ models via OpenRouter with an @keyword (e.g. @claude, @deepseek)
- **Free tier**: Free-tier models available with no signup, no credit card, and no login required. Allowance covers a normal session; usage is rate limited.
- **plai Plus (optional, €4.99/month, VAT included)**: unlimited chat on our free models (fair use), premium models and image generation from a monthly allowance; free email sign-in, then Stripe checkout; cancel anytime.
- **Premium pricing**: Pay-per-use (billed per message at API rates). No subscription required; optional plai Plus is €4.99/month. Full pricing, free limits and per-model prices: [https://plai.chat/pricing/](https://plai.chat/pricing/)
- **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 by optional pay-per-use credits and the optional plai Plus plan.
- **Slack companion**: Plug and AI (https://plugand.ai) — the same ecosystem as a Slack app for teams.
- **Microsoft Teams app**: PLAI – Plug and AI (https://marketplace.microsoft.com/en-us/product/WA200011356?mktcmpid=plaichat-llms-txt-intro) — the same assistant on the Microsoft commercial marketplace for Teams workspaces.

## Who is it for

- Privacy-conscious individuals who don't want their prompts stored on vendor servers
- Users who want the best models of several AI providers (GPT, Gemini, Grok; Claude via @claude) without paying three subscriptions or comparing them themselves
- Beginners who want zero-friction access to AI with no signup
- Budget and light users (pay-per-use is usually cheaper than $20/mo subscriptions for light use)
- 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/) — curated multi-vendor tiers (300+ models via @keyword when signed in) vs 1 vendor, pay-per-use or optional plai Plus vs $20/mo, and using AI without a ChatGPT account
- [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/) — free to start with no login vs Poe's account-only daily free points; 20 free messages/day, no sign-up needed; a free account adds a one-time welcome credit (1,000+ extra messages or 100 images); unlimited on free models (fair use) with plai Plus
- [AI roleplay chat](https://plai.chat/ai-roleplay-chat/) — four editable starter scenes and custom prompts for fictional character conversations; free, rate-limited use without signup
- [TypingMind alternative](https://plai.chat/typingmind-alternative/) — no API keys required, zero setup
- [ChatHub alternative](https://plai.chat/chathub-alternative/) — free tier with no signup (ChatHub is free to start but needs an account), 300+ models via @keyword (signed in) vs 20+
- [Duck.ai alternative](https://plai.chat/duck-ai-alternative/) — Duck.ai vs ChatGPT logged-out vs PLAI.chat, sourced comparison of no-login AI chat
- [T3.chat alternative](https://plai.chat/t3-chat-alternative/) — free to start with no login + Slack & Teams companions
- [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

- [ChatGPT without login](https://plai.chat/chatgpt-without-login/) — free AI chat path when OpenAI account is the blocker
- [Claude without login](https://plai.chat/claude-without-login/) — free AI chat path when an Anthropic account is the blocker
- [Gemini without login](https://plai.chat/gemini-without-login/) — free AI chat path when a Google account is the blocker
- [No-login AI chat](https://plai.chat/no-login-ai-chat/) — anonymous AI chat without signup
- [Anonymous AI chat](https://plai.chat/anonymous-ai-chat/) — no account, email or phone; what stays anonymous and what does not
- [Unlimited AI chat](https://plai.chat/unlimited-ai-chat/) — published free limits; 20 free messages/day, no sign-up needed; a free email account adds a one-time welcome credit (1,000+ extra messages or 100 images); unlimited on free models (fair use, up to 10,000/month) only with plai Plus
- [Talk to AI](https://plai.chat/talk-to-ai/) — talk to an AI with no sign-up: type or dictate (browser speech recognition in Chrome/Edge/Safari; audio handled by the browser vendor, not PLAI.chat), replies read aloud by the browser; no live hands-free voice mode
- [AI chat with no ads](https://plai.chat/ai-chat-no-ads/) — no third-party ads (no ad networks, banner/pop-up/video ads, or paid placements in replies); funded by optional pay-per-use credits; discloses Google Analytics, Turnstile, and promotion of the developer's own products (Apps menu, footer links, Slack/Teams apps, task/whiteboard answers built on cnvs.app)
- [AI chat with no subscription](https://plai.chat/ai-chat-no-subscription/) — no monthly plan required: free models at no cost, paid models billed per message from prepaid credit (one-off Stripe top-ups); when a vendor subscription can still be cheaper
- [Pricing](https://plai.chat/pricing/) — free models with no login (20 messages/day for everyone without plai Plus — anonymous per browser with 200/day and 60/hour per-IP caps; after that, signed-in users with credit can choose a cheap paid model per message with consent; reset 00:00 UTC); $1 welcome credit on free email sign-up; premium models billed per message at the OpenRouter-reported cost with no per-message markup; one-off Stripe top-ups that never renew; models with output price above $5 per 1M tokens need a first top-up (or plai Plus); image generation works on the welcome credit; optional plai Plus €4.99/month (VAT included): premium models and image generation unlocked, unlimited free models (fair-use cap 10,000 messages/month), plus $1.50/month allowance at real model cost for premium chat and image generation (5,000+ messages a month on our cheapest model or 100+ images, any mix; ~6,000 in / 1,000 out tokens per message) when billed in EUR or USD ($1.00/month when billed in INR or BRL); per-model price table (OpenRouter list prices, snapshot 2026-10-16)
- [Private AI chat](https://plai.chat/private-ai-chat/) — browser-local history, optional Zero Data Retention
- [Offline AI chat history](https://plai.chat/offline-ai-chat/) — transcripts stored offline in the browser
- [Browser-only AI chat](https://plai.chat/browser-only-ai-chat/) — client-side history, no server chat archive
- [Chat with your documents](https://plai.chat/chat-with-your-documents/) — per-conversation knowledge (mini RAG) for signed-in users (free account): add up to 3 links or files (.txt, .md, .json, .jsonl, .yaml/.yml, .csv, .tsv; up to 2 MB each; no PDF/HTML yet) from the composer's "Chat context" button; small sources read in full, larger ones indexed with numbered [n] citations and a Sources list; any model incl. free; multilingual retrieval (tested with Polish); not stored permanently on servers (uploads cached in the browser, links as URLs, server index in memory only); ZDR applies to embeddings; indexing at no extra charge
- [Simple RAG chat](https://plai.chat/rag-chat/) — no-code RAG (retrieval-augmented generation) for individuals, freelancers and small businesses: no embeddings pipeline, vector database or infrastructure, no subscription required (free or pay-per-use models, indexing included); honest comparison with a DIY RAG pipeline; limits: 3 sources per chat, 2 MB each, text formats only (no PDF/HTML yet), per-conversation (not shared team-wide)
- [Mermaid AI diagram generator](https://plai.chat/mermaid-ai-diagram-generator/) — AI-generated Mermaid diagrams with inline rendering and SVG export
- [AI chat widget for your website](https://plai.chat/ai-chat-widget/) — embed PLAI.chat on any site with one script tag; bubble, dock or inline layout; anonymous visitor chat with no signup and no cookies on the host page; per-key origin allowlist; all three modes runnable live on the page

## International

- [PLAI.chat po polsku / Polish landing](https://plai.chat/pl/) — Polish-language overview (free Polish AI chat, ChatGPT po polsku, alternatywa dla ChatGPT): darmowy czat AI po polsku na darmowych modelach bez rejestracji; po darmowym zalogowaniu GPT, Gemini, Grok, Claude i 300+ modeli płatnych za użycie; abonament niewymagany (opcjonalnie plai Plus 4,99 €/mies.). The product UI is also available in Polish.
- [Chat AI tanpa login / Indonesian landing](https://plai.chat/chat-ai-tanpa-login/) — Indonesian-language page: chat AI gratis tanpa login dan tanpa daftar (free AI chat without login); UI is English, users can write in Indonesian; same free limits as the English no-login page.
- [KI Chat ohne Anmeldung / German landing](https://plai.chat/ki-chat-ohne-anmeldung/) — German-language page: KI Chat kostenlos ohne Anmeldung und ohne Registrierung (free AI chat without sign-up); users can write in German (core chat UI partly in German); same free limits as the English no-login page.

## 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.
- [free-sign.com](https://free-sign.com) — Sign PDFs confidentially in your browser. No upload. No account.

Each tool publishes its own agent docs — append /llms.txt to any URL above.

## Optional

- [Full factual brief](https://plai.chat/llms-full.txt)
- [Full markdown content feed](https://plai.chat/llms.md)
- [Sitemap](https://plai.chat/sitemap.xml)
- [Slack companion: Plug and AI](https://plugand.ai)
- [Microsoft Teams app: PLAI – Plug and AI](https://marketplace.microsoft.com/en-us/product/WA200011356?mktcmpid=plaichat-llms-txt-links)
- [Model list](https://plugand.ai/models.html)
- [Support & FAQ](https://plai.chat/support.html)