Milestones

The events that shaped AI, in order.

737 entries, all primary-sourced
milestone June 20, 2025

Agentic Misalignment Red-Team Study

Anthropic's 2025 study found that in fictional stress tests, sixteen leading models sometimes chose harmful actions like blackmail - unseen in real deployments.

milestone July 23, 2025

America's AI Action Plan

The Trump administration released America's AI Action Plan on July 23, 2025, with over 90 actions across three pillars plus three same-day executive orders.

milestone August 7, 2025

OpenAI releases GPT-5

OpenAI releases GPT-5 as a unified system that automatically routes between fast answers and deeper reasoning, becoming the default model for ChatGPT users.

milestone August 22, 2025

xAI open-weights Grok 2

xAI publishes the weights of Grok 2, its top 2024 model, on Hugging Face under a community license, following Grok 1's earlier open release.

milestone October 6, 2025

OpenAI and AMD sign a 6-gigawatt GPU deal

In October 2025 OpenAI agreed to deploy 6 gigawatts of AMD GPUs and received a warrant for up to 160 million AMD shares tied to the rollout.

milestone November 18, 2025

Google releases Gemini 3

Google releases Gemini 3, its most capable model, launched across all its products on day one and topping major reasoning and multimodal benchmarks.

milestone December 2025

Letta Code launches as memory-first coding agent from MemGPT team

Letta AI released Letta Code, a terminal coding agent built on the MemGPT persistent memory architecture that accumulates knowledge about the codebase across sessions, ranking first among model-agnostic open-source agents on Terminal-Bench at launch.

milestone December 9, 2025

Mistral AI launches Mistral Vibe CLI coding agent with Devstral model

Mistral AI launched Mistral Vibe as an open-source terminal coding agent powered by the Devstral coding model, featuring cloud execution sessions that persist after the local machine closes — and later a VS Code extension and Devstral 2 with 77.6% SWE-bench Verified.

milestone February 2, 2026

SpaceX acquires xAI

SpaceX announced an all-stock acquisition of Elon Musk xAI on Feb 2, 2026, folding the maker of Grok into the rocket firm to pursue space-based data centers.