v2.1.284
Claude Code — Releases · Sep 28, 2026
Claim: Claude Code v2.1.284 release: adds Claude Sonnet 5.5 as default, improved UX/UX controls, gateway enhancements, MCP reliability fixes, and numerous bug fixes.
Evidence: Official release notes listing: new model (claude-sonnet-5-5 at $2/$10 per Mtok with $0.20/Mtok cache reads), 30+ named fixes and feature additions across gateway, desktop, MCP, shell, vim, rendering, and session handling.
Rationale
Routine maintenance release with incremental fixes, UX polish, and bug corrections. Sonnet 5.5 addition is notable but a standard model deprecation cycle; cache-read pricing ($0.20/Mtok) is modest and does not fundamentally change token-efficiency strategy. Most fixes (shell, vim, rendering, MCP reconnect) are resilience/UX improvements, not new capability. No stack-defining pattern or architectural shift. Applicability is moderate: gateway enhancements (managed policies, telemetry, certificate auth) may help if Timothy uses Claude apps gateway; Sonnet 5.5 as default is a transparent swap. Durability is low because model defaults and UX tweaks are surface-level; next release may alter both. This is ADOPT-CHEAP: update for stability and fixes, not strategy.