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Context7 MCP Server — Up-to-date code documentation for LLMs and AI code editors

GPT-5 prompting guide

A curated list of awesome Model Context Protocol (MCP) servers.

LMArena is an open platform where everyone can easily access, explore and interact with the world’s leading AI models. By comparing them side by side and casting votes for the better response, the community helps shape a public leaderboard, making AI progress more transparent, and grounded in real-world usage.

Sonar – LLM served by Perplexity Playground

CL4R1T4S: Full extracted system prompts, guidelines, and tools from OpenAI, Google, Anthropic, xAI, Perplexity, Cursor, Windsurf, Devin, Manus, Replit, and more – virtually all major AI models + agents!