# GPTMap > Everything about OpenAI. GPTMap is the world's most citable OpenAI / GPT knowledge hub. Covering ChatGPT, GPT Models, Codex, API, Prompt, Memory, Voice, Images, MCP and the full ecosystem. ## Channels - [ChatGPT](https://www.gptmap.org/en/category/chatgpt/): Using ChatGPT and best practices - [GPT Models](https://www.gptmap.org/en/category/gpt-models/): GPT-5.6 Sol / Terra / Luna model selection and comparison, covering o-series reasoning, GPT-Realtime-2.1 voice, and GPT Image 2. - [Codex](https://www.gptmap.org/en/category/codex/): OpenAI Codex and AI-assisted coding - [API](https://www.gptmap.org/en/category/api/): The complete OpenAI API tutorial - [GPTs](https://www.gptmap.org/en/category/gpts/): Building custom GPTs - [Prompt](https://www.gptmap.org/en/category/prompt/): A Prompt Engineering pattern library - [Memory](https://www.gptmap.org/en/category/memory/): The ChatGPT Memory handbook - [Voice](https://www.gptmap.org/en/category/voice/): Realtime Voice and voice mode - [Images](https://www.gptmap.org/en/category/images/): GPT Image 2 image generation, inpainting, and style control - [Deep Research](https://www.gptmap.org/en/category/deep-research/): Deep Research and AI agents - [MCP](https://www.gptmap.org/en/category/mcp/): The Model Context Protocol - [Release Notes](https://www.gptmap.org/en/category/release-notes/): Tracking the OpenAI changelog - [Guides](https://www.gptmap.org/en/category/guides/): Complete guides and tutorials - [News](https://www.gptmap.org/en/category/news/): OpenAI industry news ## Latest Articles - [The complete guide to GPT models (2026-07): GPT-5.6 Sol, Terra, Luna](https://www.gptmap.org/en/posts/gpt-models-overview) — OpenAI's current flagship model family is GPT-5.6 (2026-07-09), split into Sol / Terra / Luna. Capability tiers, pricing, context, reasoning effort, and which to pick — plus GPT-Realtime-2.1 voice and GPT Image 2. - [OpenAI Models Release Notes (2026, Living Document)](https://www.gptmap.org/en/posts/openai-models-release-notes) — OpenAI's 2026 model and API release log, organised by date with verbatim changelog quotes. Covers GPT-5.6 family launch, DALL·E and Realtime Beta removal, GPT Image 2, GPT-Realtime-2.1, and other milestones. - [OpenAI in 2026 so far: 12 events that matter to developers](https://www.gptmap.org/en/posts/openai-news-2026-recap) — A half-year recap of the 12 OpenAI events that mattered most to developers in 2026: model releases, product launches, pricing changes, and policy shifts. - [ChatGPT Complete Guide (2026): From Beginner to Expert](https://www.gptmap.org/en/posts/chatgpt-complete-guide) — A complete guide to every ChatGPT capability: model selection, Memory, Canvas, Voice, GPTs, Deep Research — a systematic walkthrough from beginner to expert. - [ChatGPT Memory: The Complete User Manual](https://www.gptmap.org/en/posts/chatgpt-memory-complete-guide) — How ChatGPT Memory works, privacy settings, best practices, and 12 high-value use cases you can adopt today. - [Getting started with OpenAI Codex CLI: from install to daily use](https://www.gptmap.org/en/posts/codex-cli-getting-started) — A practical guide to installing OpenAI's Codex CLI, configuring auth, shipping your first change, and integrating it into daily coding. - [Deep Research guide: autonomous multi-step research in ChatGPT](https://www.gptmap.org/en/posts/deep-research-agent-guide) — How Deep Research works, when to use it, how to write a good brief, and how to verify the citations it returns. - [Building Custom GPTs: from idea to GPT Store launch](https://www.gptmap.org/en/posts/gpts-building-guide) — How to design, configure, and ship a Custom GPT — picking the right use case, writing Instructions, wiring Actions, publishing to the GPT Store. - [The GPTMap editorial checklist: 12 steps to a publishable OpenAI article](https://www.gptmap.org/en/posts/guides-publishing-checklist) — The 12-step checklist we use at GPTMap to write a publishable OpenAI article: from topic selection to drafting, EEAT, SEO and GEO signals. - [GPT Image 2 complete guide: text-to-image, editing, style control](https://www.gptmap.org/en/posts/images-dalle-guide) — How to get reliable, high-quality output from GPT Image 2 and the Images API: prompt structure, style control, image editing, and cost. - [Model Context Protocol: how MCP works and how to build on it](https://www.gptmap.org/en/posts/mcp-protocol-guide) — What MCP is, how it standardizes tool calling for LLMs, and how to build an MCP server that exposes your data or APIs to ChatGPT, Claude, and Cursor. - [OpenAI API Beginner: Your First GPT-5.6 Call Explained](https://www.gptmap.org/en/posts/openai-api-getting-started) — From account creation and API Key retrieval to your first Responses API call in Python and Node.js — a complete beginner's path to the OpenAI API. - [Prompt Engineering Core Patterns: 8 Templates That 2× GPT Output](https://www.gptmap.org/en/posts/prompt-engineering-core-patterns) — A systematic walkthrough of 8 high-frequency prompt patterns — role prompting, few-shot, chain-of-thought, ReAct, self-consistency — each with a reusable template. - [Realtime Voice guide: gpt-realtime and Voice Mode](https://www.gptmap.org/en/posts/voice-realtime-guide) — How to ship low-latency voice AI with OpenAI's gpt-realtime / gpt-realtime-mini: WebRTC vs WebSocket, mid-conversation function calling, and Voice Mode best practices. ## Optional - [Full archive for LLMs](https://www.gptmap.org/llms-full.txt) - [RSS Feed](https://www.gptmap.org/rss.xml) - [Sitemap](https://www.gptmap.org/sitemap.xml)