







Open-source plugin for spec-driven development with AI coding agents. Deep-context agents draft the design, and zero-context subagents stress-test it before you write code.
Introducing the Elephant-Goldfish Model plugin: scaling design-driven AI software development
Meet the open source Elephant-Goldfish Model plugin: scaling design-driven AI development with long-horizon context and stateless adversarial reviews.

Codex | AI Coding Partner from OpenAI
The best way to build with agents. Codex accelerates real engineering work, from planning and building features to refactors, reviews, and releases—working seamlessly across your tools.

What spec-driven development gets wrong
The most powerful AI software development platform with the industry-leading context engine.

Understanding Spec-Driven-Development: Kiro, spec-kit, and Tessl
Notes from my Thoughtworks colleagues on AI-assisted software delivery


Spec-first agentic development · spec-first.dev
Spec-first agentic development is specification-driven development for AI coding agents: reviewed specs, isolated worktrees, gated commits.

Introducing LM Studio Bionic: the AI agent for open models
The AI agent made for open models, built to get things done.

OpenCode Zen | A curated set of reliable optimized models for coding agents
OpenCode - The open source coding agent.

gpt-oss:120b
OpenAI’s open-weight models designed for powerful reasoning, agentic tasks, and versatile developer use cases.

The Anatomy of an Agent Harness
Learn how agent harnesses transform AI models into autonomous work engines. Explore core components: filesystems, sandboxes, and memory.

Agent Plugins
A portable package format for reusable components that extend AI agents.

Prime Intellect - The Open Stack for Self-Improving Agents
The compute and infrastructure platform for you to train, evaluate, and deploy your own agentic models.

Prime Intellect - The Open Stack for Self-Improving Agents
The compute and infrastructure platform for you to train, evaluate, and deploy your own agentic models.

gpt-oss:20b
OpenAI’s open-weight models designed for powerful reasoning, agentic tasks, and versatile developer use cases.

Prime Agent: A self-improving RLM agent
Prime Agent is our open-source, self-improving coding harness built around two abstractions: the Recursive Language Model (RLM) and the Continual Harness. With Opus 5, it achieves 95.5% on ARC-AGI-3, surpassing the reported human expert baseline.

Inside OpenAI’s agentic software factory
A deepdive into how Codex has “taken over” OpenAI, how the frontier lab builds its agentic software factory, and the engineering challenges of one billion users. Details from inside OpenAI
