GPT-5.5 Instant Update (2026-06-24)
ChatGPT’s most-used model was updated for better goal detection, multi-turn context, complex-instruction adherence, location-aware shopping/local results, and less-templated, more cohesive formatting.
Flag changes (20260624-170047Z → 20260624-190108Z)
Android timing
android_timing_max_attempts– caps retry count for Android timing calls.android_timing_poll_interval_ms– sets poll frequency for Android timing.
Beacon / messaging signals
beacon_enabled– turns on the beacon signal feature.beacon_experiment_enabled– gates beacon A/B experiment.beacon_target_user_message_count– sets message threshold that triggers beacon.
Feedback
feedback_interested_enabled– shows “interested” feedback option.
File upload
file_upload_enabled– enables file-upload UI/entry point.file_upload_visual_refresh_variant– selects new file-upload visual treatment.
Model routing
public_model_slug_override– allows public override of model slugs.
Removed flags
plugins– plugin support flag removed.watermark_image_upsell– watermark-image upsell flag removed.
Statsig
One gate and one dynamic config removed; one layer added.