# xAI 成立近三年发展历程回顾 - 来源：DogeDesigner (@cb_doge) - 发布时间：2026-07-12 21:03 - AIHOT 分数：37 - AIHOT 链接：https://aihot.virxact.com/items/cmrhu30fg00l9biidr6qophub - 原文链接：https://x.com/cb_doge/status/2076291436283396496 ## AI 摘要 2023年7月12日，Elon Musk 宣布成立 xAI。此后，xAI 陆续发布 Grok、Grok-1.5（128K上下文）、Grok-1.5V（多模态）、Grok-2、Grok 3（10倍算力训练）、Grok 4、Grok 4.1（LMArena Text Arena 第一）、Grok 4.20 及 Grok 4.20 Multi-Agent 等模型。基础设施方面，Colossus 集群从10万块 H100 GPU 扩展至超100万块 H100 等效算力。关键事件还包括：开源 Grok-1（314B MoE）、收购 Hotshot 和 𝕏、推出 xAI API、Grok 进入特斯拉、SpaceX 收购 xAI，以及累计超200亿美元融资。 ## 正文 On this day in 2023， Elon Musk officially announced xAI. A lot has happened since then… • Jul 12， 2023 - xAI was officially announced with the mission of understanding the true nature of the universe. • Nov 3， 2023 - Unveiled Grok， its first AI model， trained in only two months and connected to real-time knowledge from X. • Nov 6， 2023 - Launched PromptIDE for prompt engineering and interpretability research. • Mar 17， 2024 - Open-released Grok-1's weights and architecture， a 314B-parameter Mixture-of-Experts model. • Mar 28， 2024 - Announced Grok-1.5 with major reasoning improvements and a 128K-token context window. • Apr 12， 2024 - Introduced Grok-1.5V， xAI's first multimodal model for understanding images， documents， charts， diagrams and screenshots. • May 26， 2024 - Raised $6 billion in Series B funding. • Aug 13， 2024 - Launched Grok-2 and Grok-2 mini， bringing stronger reasoning， coding， vision and image generation to Grok. • Sep 2024 - Brought Colossus online with 100，000 NVIDIA H100 GPUs， built from start to finish in only 122 days. • Nov 4， 2024 - Opened the xAI API public beta. • Dec 9， 2024 - Launched Aurora， xAI's own autoregressive image-generation model. • Dec 12， 2024 - Made Grok free for everyone on X while adding web search， citations and multilingual improvements. • Dec 23， 2024 - Raised another $6 billion through its Series C funding round. • Jan-Feb 2025 - Launched standalone Grok applications for iOS and Android. • Feb 2025 - Doubled Colossus to 200，000 GPUs just 92 days after completing the first 100，000-GPU cluster. • Feb 19， 2025 - Unveiled Grok 3 and Grok 3 mini， trained with roughly 10× more compute， alongside Think and DeepSearch. • Feb-Mar 2025 - Rolled out Voice Mode and the SuperGrok subscription. • Mar 17， 2025 - Acquired AI video-generation startup Hotshot. • Mar 28， 2025 - xAI acquired X in an all-stock transaction， combining data， models， compute， distribution and talent. • Apr-May 2025 - Released Grok 3 through the API and launched Live Search for real-time information from the web and X. • Jul 9， 2025 - Launched Grok 4 and Grok 4 Heavy with native tool use， real-time search and reinforcement learning at unprecedented scale. • Jul 12， 2025 - Brought Grok directly into Tesla vehicles through an over-the-air software update. • Jul 14， 2025 - Launched xAI for Government. • Jul-Aug 2025 - Introduced Grok Companions， launched Grok Imagine for rapid image and video generation with sound， and open-released Grok 2. • Aug 28， 2025 - Launched Grok Code Fast 1 for fast and economical agentic coding. • Sep 19， 2025 - Launched Grok 4 Fast， delivering Grok 4-class performance with significantly greater token and cost efficiency. • Sep 25， 2025 - Expanded xAI for Government through the GSA OneGov program. • Oct 27， 2025 - Launched Grokipedia， an AI-generated knowledge platform powered by Grok. • Nov 17， 2025 - Launched Grok 4.1， which reached the #1 position on LMArena's Text Arena during its rollout. • Nov 19， 2025 - Launched Grok 4.1 Fast and the Agent Tools API while announcing a major partnership with Saudi Arabia and HUMAIN. • Dec 2025 - Partnered with El Salvador on a nationwide AI education program； launched the Grok Voice Agent API， Collections API， Grok Business and Grok Enterprise； and was selected for a major U.S. defense AI program. • By the end of 2025 - Colossus I and II had surpassed one million H100 GPU equivalents， while X and Grok reached roughly 600 million monthly active users combined. • Jan 6， 2026 - Raised $20 billion through an upsized Series E funding round. • Jan 28， 2026 - Launched the Grok Imagine API for image creation， video generation and media editing. • Feb 2， 2026 - SpaceX acquired xAI， combining artificial intelligence， rockets， satellites， communications and real-time information. • Mar 10， 2026 - Launched Grok 4.20 and Grok 4.20 Multi-Agent， allowing multiple specialized agents to collaborate on difficult problems. • Apr 17-30， 2026 - Launched standalone Speech-to-Text and Text-to-Speech APIs， Grok Voice Think Fast 1.0 and Custom Voices. • May 5， 2026 - Launched Grok 4.3 with a 1M-token context window， configurable reasoning and advanced tool-calling capabilities. • May 6， 2026 - Launched Grok Connectors and Imagine Quality Mode while announcing a major Colossus computing partnership with Anthropic. • May 15-21， 2026 - Brought Grok subscriptions to Hermes Agent， OpenClaw and OpenCode， then launched Grok Skills for persistent expertise， workflow automation and document generation. • May 25， 2026 - Launched Grok Build， an agentic coding CLI capable of planning， searching， editing， testing and building software directly from the terminal. • May 27-Jun 15， 2026 - Expanded the Grok coding ecosystem with Kilo Code， Grok Build through the API， Composer 2.5， plugins， a marketplace， an Agent Dashboard and Warp integration. • Jun 3-18， 2026 - Launched Grok Imagine Video 1.5， expanded Grok Voice through Vapi， powered Gopuff's Go and eToro's Tori， and brought Grok to PowerPoint， Word， Excel， Amazon Bedrock and Databricks. • Jul 1， 2026 - Launched Voice Agent Builder， a no-code platform for deploying production-ready Grok voice agents. • Jul 6， 2026 - Launched 21 new flagship Grok voices. • Jul 8， 2026 - Launched Grok 4.5， SpaceXAI's smartest model yet for coding， agentic tasks and knowledge work-trained alongside Cursor， served at fast-model speeds and built for dramatically greater token efficiency.