February 21st, 2026
New
Improved
Fixed

Build 55
New: GPT-5.3 Codex Spark support. Added GPT-5.3 Codex Spark and improved default model prioritization.
New: Search plugin parity. Added first-class Perplexity and You.com search tool support.
New: Sidebar toggle shortcut. Added a quick sidebar toggle command with Cmd+Option+S.
New: Starter pack install flow. Improved onboarding with a clearer starter pack setup path.
Improved: Parallel chat streaming stability. Isolated streaming state per chat session to prevent cross-session interference.
Improved: Anthropic/Bedrock behavior. Better Claude thinking handling and cleaner Anthropic control behavior.
Improved: Workflow palette behavior. Active-screen behavior now works correctly while preserving per-screen restore.
Fixed: Voice recording/transcription UX. Polished compose recording overlay and transcription error presentation.
Fixed: Low-res App Icon. Fixed the issue with the low-res default app icon.
Fixed: Grok/xAI request reliability. Migrated xAI/Grok flows to the Responses tool path to avoid deprecated endpoint failures.
New: xAI native tools. Added xAI Web Search, X Search, and Code Execution tool wiring in chat transport and tool builders.
Improved: Tool execution rendering. Provider-executed tool calls now render more consistently, including xAI code-execution outputs and fallback detail views.
Improved: Provider error diagnostics. Error messages now include richer raw-response context and clearer guidance for deprecated xAI Live Search behavior.
Fixed: Settings sync edge cases. Hardened account/plugin settings sync with stricter canonical fetch checks, safer merge-upsert fallback paths, and duplicate-row intent preservation.
Fixed: Sidebar multi-select move action. Context-menu move operations now correctly apply to the current multi-selection and disable invalid destinations.