# Codex

ModRetro released a Chromatic plugin for Codex that lets the model drive a set of Game Boy Color development tools from chat and turn a prompt into a playable game. The plugin exposes animation, maps, ROM playtesting, on-screen annotation and button-sequence testing as tools the model can call, and it can write the compiled ROM to a rewritable cartridge on the Chromatic handheld. In the example, the top-down adventure game Lodge Podge was generated from a prompt and then revised on request to change the character's build and the materials needed for construction.

ModRetro released a Chromatic plugin for Codex that lets the model drive a set of Game Boy Color development tools from chat and turn a prompt into a playable game. The plugin exposes animation, maps, ROM playtesting, on-screen annotation and button-sequence testing as tools the model can call, and it can write the compiled ROM to a rewritable cartridge on the Chromatic handheld. In the example, the top-down adventure game Lodge Podge was generated from a prompt and then revised on request to change the character's build and the materials needed for construction.

Helical released a Model Context Protocol (MCP) integration for OpenAI's Codex that lets researchers call biological foundation models from the agentic tools they already use, and use or post-train those models on their own data through natural-language instructions. Using such models previously required researchers to configure infrastructure and build the workflows for an experiment. One model available at launch is PerturbGen, developed at the Wellcome Sanger Institute to predict how perturbations reshape cellular trajectories, and Helical with Nebius is offering free compute credits that academic researchers can request.

Helical released a Model Context Protocol (MCP) integration for OpenAI's Codex that lets researchers call biological foundation models from the agentic tools they already use, and use or post-train those models on their own data through natural-language instructions. Using such models previously required researchers to configure infrastructure and build the workflows for an experiment. One model available at launch is PerturbGen, developed at the Wellcome Sanger Institute to predict how perturbations reshape cellular trajectories, and Helical with Nebius is offering free compute credits that academic researchers can request.

This work presents the first systematic study of native dynamic concurrency in Codex, Claude Code, and Kimi Code, running controlled concurrent-versus-sequential comparisons on 354 tasks from four long-horizon benchmarks and one bounded benchmark for 2,124 executions; concurrency helps most on long-horizon tasks and little or negatively on bounded ones, raises token use to 1.41–3.31 times sequential, and yields a taxonomy of four main categories, 13 subcategories, and 28 concurrency failure patterns.

This work presents the first systematic study of native dynamic concurrency in Codex, Claude Code, and Kimi Code, running controlled concurrent-versus-sequential comparisons on 354 tasks from four long-horizon benchmarks and one bounded benchmark for 2,124 executions; concurrency helps most on long-horizon tasks and little or negatively on bounded ones, raises token use to 1.41–3.31 times sequential, and yields a taxonomy of four main categories, 13 subcategories, and 28 concurrency failure patterns.