Can't get full response of advance-deep-research preset prompt

Bug Reports
1

:bug: Describe the Bug

I am developing an app for automated research. I decided to use advanced-deep-research preset, but when I am sending request and proceed to receive Streamed output, I am receiving information that “Browser still returns ukrainian websitres. I will try another approach - direct URL-s to known articles and sources”.

:white_check_mark: Expected Behavior

To fullfill research completely.

:cross_mark: Actual Behavior

It isn’t completing request, maybe I am parsing it wrong, look at code below.

:counterclockwise_arrows_button: Steps to Reproduce

Payload:

endpoint /v1/responses

{

    "input": <long prompt (about 40000 chars),

    "stream": True,

    "max_output_tokens": 128000,
    "preset": "advanced-deep-research

}

Parsing loop:

for event in _sse_iter(resp):
                if time.time() - start_t > cfg.timeout_sec:
                    log("  WARNING: timeout during streaming — partial content kept.")
                    break

                etype = event.get("type", "")
                out_idx = event.get("output_index", 0)

                # --- Path A: full text in .done (all presets emit this) -------
                if etype == "response.output_text.done":
                    text = event.get("text", "").strip()
                    if text:
                        done_texts[out_idx] = text
                        log(f"  output_text.done [{out_idx}]: {len(text):,} chars")

                # --- Path B: delta chunks (Claude-based presets) --------------
                elif etype == "response.output_text.delta":
                    delta = event.get("delta", "")
                    if delta:
                        delta_buffers[out_idx] = delta_buffers.get(out_idx, "") + delta

                # --- Path C: output_item.done with type=message (safety net) --
                # advanced-deep-research emits this with full content[].text
                elif etype == "response.output_item.done":
                    item = event.get("item", {})
                    if item.get("type") == "message":
                        for block in item.get("content", []):
                            if block.get("type") == "output_text":
                                text = block.get("text", "").strip()
                                if text and out_idx not in done_texts:
                                    done_texts[out_idx] = text
                                    log(f"  output_item.done/message [{out_idx}]: {len(text):,} chars")
                    # Extract citations from search_results items streamed inline
                    elif item.get("type") == "search_results":
                        for result in item.get("results", []):
                            url_val = result.get("url", "")
                            if url_val and url_val not in citations:
                                citations.append(url_val)

                # --- Entire response done: usage + any remaining citations ----
                elif etype == "response.completed":
                    r = event.get("response", {})

                    # Citations may also appear in response.output search_results
                    for item in r.get("output", []):
                        if item.get("type") == "search_results":
                            for result in item.get("results", []):
                                url_val = result.get("url", "")
                                if url_val and url_val not in citations:
                                    citations.append(url_val)

                    usage = r.get("usage", {})
                    usage_dict["prompt_tokens"]    = usage.get("input_tokens")
                    usage_dict["completion_tokens"] = usage.get("output_tokens")
                    usage_dict["total_tokens"] = (
                        (usage.get("input_tokens") or 0) + (usage.get("output_tokens") or 0)
                        or None
                    )
                    log(f"  response.completed | tokens={usage_dict} | citations={len(citations)}")

                elif etype and not etype.startswith("response.output_text"):
                    log(f"  Event: {etype}")
            break

:globe_showing_europe_africa: Environment

  • API Version: Agent API, /v1/responses, advanced-deep-research
  • SDK (if applicable): -
  • Operating System: Windows