Tracker›Changelog›2026-08-27-stream-message-und-2-added

New stream event types: message, product_rationale, product_reviews

observedstructure · stream2026-08-27-stream-message-und-2-added

Instrument state: Schema 15 · v2 · Bookmarklet 2.7 · measure · gpt-5-6

Evidence

After
{
  "sse_event_types": [
    "message",
    "product_rationale",
    "product_reviews"
  ]
}
Breadth
6/33 prompts · local
Modes
instant + thinking
Measuring days
27 Aug 2026 · 7 field diffs in events.jsonl
Raw data excerpt (K2-01__instant, 2026-08-27)
{
  "har.sse_event_types": [
    "__debug",
    "async_image",
    "cite",
    "conversation_detail_metadata",
    "entity",
    "event:delta",
    "event:delta_encoding",
    "hidden",
    "input_message",
    "message",
    "message_marker",
    "message_stream_complete",
    "num_variants_in_stream",
    "open_entity_detail",
    "product_entity",
    "product_rationale",
    "product_reviews",
    "resume_conversation_token",
    "search_model_queries",
    "search_result",
    "search_result_group",
    "server_ste_metadata",
    "sources_footnote",
    "stop",
    "title_generation",
    "url_moderation"
  ]
}

Daily data of 27 Aug 2026 →

Context

stream/message stream/product-rationale stream/product-reviews

Impact

No evidenced impact.

Status history

27 Aug 2026observed