Cline 3.51.0: GPT-5.2 Codex Support Now Available
Cline 3.51.0 adds OpenAI GPT-5.2 Codex support for agentic coding. Optimized for refactors, migrations, and terminal workflows. Available now.
TL;DR
- Cline 3.51.0 adds OpenAI GPT-5.2 Codex support for agentic coding workflows
- Codex is optimized for long-horizon refactors, migrations, and terminal-heavy development
- Available now in VS Code, Cursor, and Windsurf marketplaces
What Dropped
Cline 3.51.0 is live with support for OpenAI's GPT-5.2 Codex model. This is a purpose-built agentic coding model designed for real-world software engineering tasks—think multi-step refactors, large migrations, and workflows that live in the terminal.
The Dev Angle
GPT-5.2 Codex brings three things to the table: fast iteration on code changes, strong instruction following, and reliable tool usage. OpenAI also baked in better long-context understanding and improved vision performance for reading screenshots and UI surfaces during development. If you're doing complex, multi-step coding work, this model is built for that.
The release also squashes three bugs: fixed remote provider selection, prevented consecutive `act_mode_respond` calls, and resolved invalid tool call IDs when switching between model formats. These are the kind of fixes that prevent friction in your workflow.
Should You Care?
If you're already using Cline for coding tasks, you should test GPT-5.2 Codex. It's specifically tuned for the kind of work Cline does—agentic, multi-step coding. The vision improvements alone matter if you're working with UI-heavy projects or debugging visual layouts.
If you're on a different model (Claude, Grok, etc.), nothing changes for you. But if you have OpenAI credits or a subscription, Codex is worth a trial run on your next refactor or migration. The model is positioned as stronger than previous Codex versions at handling long-horizon work and tool reliability.
Getting started is straightforward: open Cline Settings, pick the OpenAI provider, and select `gpt-5.2-codex` from the model dropdown.
How to Get It
Cline 3.51.0 is available now across all major marketplaces. Download from VS Code Marketplace, or grab it in Cursor and Windsurf. Join the community on Discord or Reddit to share feedback.
Source: Cline
