Free AI Resources
A curated list of free AI tools and services. Updated regularly with credit card requirements and self-hosted options.
AI Platform Comparison
Feature Nomenclature (Same Concept, Different Names)
| Feature | ChatGPT | Gemini | Claude | Copilot |
|---|---|---|---|---|
| Custom AI Assistants Pre-configured AI with custom instructions |
GPTs | Gems | Projects | Copilot Studio |
| Deep Analysis Mode Extended reasoning for complex tasks |
o1 / o1-pro | Deep Think | Extended Thinking | Think Deeper |
| Web Research Multi-source research with citations |
Deep Research | Deep Research | Research Mode | Researcher |
| Code Execution Run code in sandbox environment |
Code Interpreter | Code Execution | Artifacts | Code Interpreter |
| File/Document Analysis Upload and analyze documents |
File Uploads | File Uploads | Knowledge Base | File Analysis |
| Image Generation Create images from text |
DALL-E 3 | Imagen 3 | — | Designer |
| Video Generation Create videos from text |
Sora | Veo 2/3 | — | — |
| Voice Mode Real-time voice conversation |
Advanced Voice | Gemini Live | Voice Mode | Voice Chat |
| Memory/Context Remember past conversations |
Memory | Memory | Projects | Memory |
| Coding Agent Autonomous code tasks |
Codex | Jules | Claude Code | GitHub Copilot |
Paid Subscription Tiers
ChatGPT Plus
$20/month- GPT-4o & GPT-5 access
- Create custom GPTs
- DALL-E 3 image generation
- Advanced Voice Mode
- Deep Research & Codex agent
- Limited Sora video generation
- ~80 messages/3 hours on GPT-4o
Google AI Pro
$20/month- Gemini 2.5 Pro access
- 1M token context window
- Create custom Gems
- Deep Research mode
- Veo 2 video generation
- Google Workspace integration
- NotebookLM Plus (20 audio/day)
- Jules coding agent (5x limits)
Claude Pro
$20/month- Claude Sonnet 4.5 & Opus 4
- 5x usage vs free tier
- Projects & Knowledge Bases
- Artifacts (code, docs, diagrams)
- Extended Thinking mode
- Google Workspace integration
- Remote MCP connections
- ~45 messages/5 hours
Perplexity Pro
$20/month- 300+ Pro searches/day
- GPT-5.1, Claude 4.5, Gemini 3
- Deep Research mode
- 500 daily research queries
- 10x citations per answer
- Unlimited file uploads
- Image generation
- $5 monthly API credit
Copilot Pro
$20/month- GPT-5 Smart Mode
- Priority access during peak
- Copilot in Office apps
- 100 Designer images/day
- Think Deeper mode
- Copilot Studio included
- 300-context memory span
- Requires M365 subscription
API Access & Developer Pricing
OpenAI API
platform.openai.comGoogle AI Studio
aistudio.google.comAnthropic API
console.anthropic.comChat & Assistants
Google's multimodal AI assistant. Access to Gemini Pro with generous daily limits.
OpenAI's conversational AI. Free tier includes GPT-4o with limited messages per 5-hour window.
Anthropic's AI assistant. Free access to Claude Sonnet with 5-hour usage windows.
Microsoft's AI powered by GPT-4. Free access with Microsoft account.
Access multiple AI models (GPT-4, Claude, Llama) in one place with daily credits.
Open-source AI chat by Hugging Face. Access to Llama, Mistral, and other open models.
Self-hosted ChatGPT alternative. Beautiful UI for Ollama and OpenAI-compatible APIs.
Open-source ChatGPT clone. Connects to multiple backends including Ollama, OpenAI, Claude.
Search & Research
AI-powered search API for LLMs and agents. Perfect for RAG applications.
AI search engine with citations. Deep Research available with daily cap.
AI search with multiple modes: Smart, Genius, Research, and Create.
AI research assistant. Upload documents and get AI-powered insights and audio summaries.
Privacy-respecting metasearch engine. Aggregate results from 70+ search engines.
Local LLM Runners
Run Llama 3, Mistral, Gemma locally. Easy setup, lightweight (3-6GB RAM). Most popular local LLM tool.
OpenAI API drop-in replacement. No GPU required. Supports text, audio, images, video.
Desktop app to run local LLMs. Beautiful UI, model browser, and local server mode.
Open-source ChatGPT alternative that runs 100% offline. Clean UI, easy model management.
Image Generation
AI image generation with excellent text rendering. Great for logos and typography.
AI image generation with fine-tuned models. Great for game assets and concept art.
Create and edit images with AI. Mixed Image Editing and canvas features.
Node-based Stable Diffusion UI. Most powerful and flexible option for advanced workflows.
The original Stable Diffusion WebUI. Beginner-friendly with extensive plugin ecosystem.
Simplified Stable Diffusion. Midjourney-like experience, minimal configuration needed.
Coding & Development
AI pair programmer. Free for verified students, teachers, and OSS maintainers.
Free AI code completion for 70+ languages. Works in VS Code, JetBrains, Vim, and more.
AI-first code editor (VS Code fork). Composer, Chat, and inline editing features.
AI-powered coding in the browser. Ghostwriter for code completion and chat.
Build with Gemini API. Prompt design, testing, and free API access.
Free Jupyter notebooks with GPU/TPU access. Great for ML experimentation.
Audio & Voice
Best-in-class AI voice generation and cloning. Ultra-realistic voices.
AI music generation from text prompts. Create full songs with vocals.
AI audio enhancement. Remove background noise and improve voice quality.
Open-source text-to-speech. Voice cloning with XTTS. High-quality neural voices.
OpenAI's speech recognition model. Transcription and translation in 99 languages.
Writing & Documents
RAG & Knowledge Bases
All-in-one AI app. Chat with documents, build agents, RAG capabilities built-in.
Chat with your documents privately. 100% local, no data leaves your machine.
Vector database for AI. High-performance similarity search for embeddings.
Automation & Agents
Top MCP Servers
Give your AI access to web search via self-hosted SearXNG. Privacy-focused, no API keys needed.
Let AI control web browsers. Automate web tasks, scrape pages, fill forms, take screenshots.
Persistent memory for AI. Remember conversations, user preferences, and context across sessions.
Connect AI to your Obsidian vault. Search notes, create links, and query your knowledge base.
AI agent framework that builds AI agents. Meta-agent that creates and improves other agents.