Tracker›Changelog›2026-09-25-request-conversation-mode-und-6-removed

Request component conversation_mode, enable_message_followups, force_parallel_switch, model_response_contracts … (7) gone

observedstructure · request2026-09-25-request-conversation-mode-und-6-removed

Instrument state: Schema 22 · v2 · Bookmarklet 2.7 · measure · gpt-5-6

Evidence

Before
{
  "send_payload_keys": [
    "conversation_mode",
    "enable_message_followups",
    "force_parallel_switch",
    "model_response_contracts",
    "paragen_cot_summary_display_override",
    "supports_buffering",
    "system_hints"
  ]
}
Breadth
26/33 prompts · global
Modes
instant + thinking
Measuring days
25 Sept 2026 · 33 field diffs in events.jsonl
Raw data excerpt (K1-01__instant, 2026-09-25)
{
  "har.send_payload_keys": [
    "action",
    "client_contextual_info",
    "client_prepare_state",
    "is_do_not_remember",
    "local_function_names",
    "messages",
    "model",
    "supported_encodings",
    "timezone",
    "timezone_offset_min"
  ]
}

Daily data of 25 Sept 2026 →

Context

request/conversation-mode request/enable-message-followups request/force-parallel-switch request/model-response-contracts request/paragen-cot-summary-display-override request/supports-buffering request/system-hints

Impact

For tools: One of 17 keys in POST /f/conversation (har.send_payload_keys / send_values). Constant „auto" for us. Alongside it, among others, model, paragen_cot_summary_display_override „allow", client_prepare_state „success", supports_buffering.

For visibility: No proven effect. A client parameter of the send request, not a retrieval signal. Relevant to tool builders because changes to the payload structure can break send logic.

Status history

25 Sept 2026observed

Open

What does force_parallel_switch toggle when it is not „auto"? Parallel tool calls? Never observed in another value.