Codex 0.95–0.96 ship async compaction, rate-limit signals; MassGen adds Codex backend
OpenAI’s Codex app/server shipped 0.95–0.96 with v2 async thread compaction, websocket rate‑limit signaling, expanded skill loading/remote catalogs, shell parallelism, state‑DB correctness, telemetry, and Linux sandbox groundwork ([0.95.0](https://github.com/openai/codex/releases/tag/rust-v0.95.0)[^1], [0.96.0](https://github.com/openai/codex/releases/tag/rust-v0.96.0)[^2]). MassGen now offers a Codex backend with local/Docker modes to orchestrate multi‑agent workflows and MCP tooling ([MassGen v0.1.47](https://github.com/massgen/MassGen/releases/tag/v0.1.47)[^3]). Expect workflow differences vs IDEs—Codex is positioned as an agentic assistant, not a full IDE—and note a Windows PowerShell 5.1 ANSI‑encoding issue affecting Cyrillic output ([video](https://www.youtube.com/watch?v=ts7yQdfBW_U&pp=ygURQ3Vyc29yIElERSB1cGRhdGU%3D)[^4], [forum thread](https://community.openai.com/t/incorrect-cyrillic-rendering-in-codex-agent-on-windows-due-to-powershell-5-1-default-ansi-encoding/1356123#post_5)[^5]). [^1]: Release notes: skills loading and remote catalogs, macOS `codex app` CLI, shell parallelism, Git safety hardening, TUI improvements, Linux sandbox groundwork. [^2]: Release notes: `thread/compact` async RPC, websocket `codex.rate_limits` event, `unified_exec` enablement, state DB-first thread listing, telemetry. [^3]: MassGen adds a Codex backend (local/Docker), native tool architecture, and a quick start to try Codex workflows. [^4]: Explains Codex app’s agentic workflow vs IDEs like Cursor and how to use it effectively. [^5]: Documents Windows PowerShell 5.1 ANSI encoding causing Cyrillic rendering issues and workaround considerations.