Extracted system prompts from ChatGPT (GPT-5.4, GPT-5.3, Codex), Claude (Opus 4.6, Sonnet 4.6, Claude Code), Gemini (3.1 Pro, 3 Flash, CLI), Grok (4.2, 4), Perplexity, and more. Updated regularly.

Wrap Gemini CLI, Antigravity, ChatGPT Codex, Claude Code, Qwen Code, iFlow as an OpenAI/Gemini/Claude/Codex compatible API service, allowing you to enjoy the free Gemini 2.5 Pro, GPT 5, Claude, Qwen model through API

Run Anthropic's Claude Code CLI with OpenAI models such as GPT-5-Codex, GPT-5.1, and others via a local LiteLLM proxy.

Wrap Gemini CLI, Antigravity, ChatGPT Codex, Claude Code, Qwen Code, iFlow as an OpenAI/Gemini/Claude/Codex compatible API service, allowing you to enjoy the free Gemini 2.5 Pro, GPT 5, Claude, Qwen model through API

Enable Claude Code to call Codex (GPT-5) asynchronously, filtering out thinking processes to save 95% context tokens.

Bidirectional adversarial review system between Claude Code (Opus) and Codex CLI (GPT-5.4)

GPT-5.2 + Codex CLI optimization journey on Anthropic's Performance Take-Home. Public code: 1525 cycles (97x). Final achievement: 1243 cycles (119x), surpassing Claude Opus 4.5's 1487-cycle benchmark.

Use GPT-5 Codex within Claude Code! This extension handles OAuth authentication with ChatGPT Plus/Pro accounts and seamlessly integrates Codex responses into your Claude Code workflow.

A cleanroom reimplementation of the par2 error-correction algorithm, library and cli in Zig, based only on publicly-available specs (NOT its source code), and with a more permissive license, a C ABI wrapper, and a LuaJIT FFI example. Full test coverage. NOTE: gpt-5.2-codex and Claude Opus 4.5 AI assisted in parts.

Claude Code skill for delegating tasks to OpenAI Codex (GPT-5.3) — precision coding, code review, and background implementation

Cross-model code review skill for Claude Code — GPT-5.3-Codex reviews via OpenRouter

Lightweight Claude Code development protocol — multi-model pipeline orchestrator (Claude Opus 4.6 + GPT-5.2/5.3 via Codex CLI)

Wrap Gemini CLI, Antigravity, ChatGPT Codex, Claude Code, Qwen Code, iFlow as an OpenAI/Gemini/Claude/Codex compatible API service, allowing you to enjoy the free Gemini 2.5 Pro, GPT 5, Claude, Qwen model through API

Wrap Gemini CLI, Antigravity, ChatGPT Codex, Claude Code, Qwen Code, iFlow as an OpenAI/Gemini/Claude/Codex compatible API service, allowing you to enjoy the free Gemini 2.5 Pro, GPT 5, Claude, Qwen model through API

MCP server that bridges Claude Code to OpenRouter API — query GPT-5.2 Codex and other models without leaving your Claude session.

Autonomous development agent — requirements in, tested codebase out. Claude Code Teams + Codex GPT 5.3 builders + Ollama local models.

Network-accessible MCP server bridging Codex (GPT-5) with Claude Code. No Codex API key needed - just OpenAI flat-rate subscription. Features persistent AI sessions, multi-computer access, bearer authentication & rate limiting. Run GPT-5 sessions that stay alive across requests & access from any machine on your network.

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Claude Code skill: delegate code implementation to OpenAI Codex (gpt-5.3-codex) subagents

Claude Code skill for delegating tasks to OpenAI Codex CLI (gpt-5.3-codex)

Claude Code skill: automated code review loop powered by Codex CLI (GPT-5.4)

Code examples for Revolutionizing Coding: Claude Opus 4.6 and GPT-5.3-Codex

Claude Code skill that invokes Codex (GPT-5.4) as an autonomous agentic collaborator

Generated books of Zircon Common Lisp using Claude Code (opus-4.6), Codex (gpt-5.3-codex xhigh), Kimi Code (kimi-k2.5)

Claude Code skill: call Codex (GPT 5.4) for code review, plan validation, and technical debate

OpenAI Codex CLI as an MCP server — use GPT-5.4 from Claude Code, Cursor, Windsurf

Wrap Gemini CLI, ChatGPT Codex, Claude Code, Qwen Code, iFlow as an OpenAI/Gemini/Claude/Codex compatible API service, allowing you to enjoy the free Gemini 2.5 Pro, GPT 5, Claude, Qwen model through API

Wrap Gemini CLI, ChatGPT Codex, Claude Code, Qwen Code, iFlow as an OpenAI/Gemini/Claude/Codex compatible API service, allowing you to enjoy the free Gemini 2.5 Pro, GPT 5, Claude, Qwen model through API

Cross-model verification for Claude Code. Bridges Claude with Codex (GPT-5.3) for second opinions on code reviews, alternative implementations, and architecture.