Cline v3.81.0 Adds GPT-5.5 Support for OpenAI Codex Subscribers

Cline, the AI-powered coding assistant, released version 3.81.0 on April 24, 2025, adding support for GPT-5.5 for users with OpenAI Codex subscriptions.

What's New

The primary addition is GPT-5.5 model support, though details about the model's capabilities and availability remain limited. The update specifically targets OpenAI Codex subscription users, suggesting this is a premium feature.

The release removes hardcoded "What's New" fallback items from the webview interface. According to the changelog, only remote-configured welcome banners will now be displayed to users.

Enhanced Memory Diagnostics

The most substantial technical changes focus on improving cline-core memory diagnostics used by the extension runtime:

• Near-heap-limit heap snapshots are now enabled
• Periodic memory usage logging has been added
• Heap snapshots are automatically logged on abnormal exits

These changes aim to make debugging out-of-memory (OOM) issues easier for developers working with the extension.

What This Means

This release represents a maintenance update with one notable feature addition. The GPT-5.5 support suggests Cline is tracking OpenAI's model releases closely, though the practical impact depends on GPT-5.5's availability and performance characteristics—neither of which are detailed in the changelog.

The memory diagnostic improvements indicate the development team is addressing stability issues, particularly around memory management. The addition of heap snapshot capabilities suggests users may have experienced OOM crashes, prompting better tooling for diagnosis.

The removal of hardcoded welcome messages in favor of remote configuration gives the Cline team more flexibility in communicating updates without requiring new releases.

For existing Cline users with OpenAI Codex subscriptions, the update provides access to a newer model option. The memory diagnostics improvements should benefit all users, particularly those working on larger codebases where memory pressure is more likely.