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arxiv: 2605.23023 · v1 · pith:XOFZUV2Znew · submitted 2026-05-21 · 💻 cs.MA · cs.HC

How to Steer Your Multi-Agent System: Human-LLM Collaborative Planning

Pith reviewed 2026-05-25 05:02 UTC · model grok-4.3

classification 💻 cs.MA cs.HC
keywords human-LLM collaborationmulti-agent systemsplanningco-planningdesign spaceuser studyprocess-level supervision
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The pith

A three-axis design space lets humans steer multi-agent LLM plans with process-level semantic and structural edits.

A machine-rendered reading of the paper's core claim, the machinery that carries it, and where it could break.

The paper formalizes a design space for human-LLM co-planning to address the difficulty humans face managing complex plans in multi-agent systems due to limited transparency. It defines interactions along mode (semantic versus structural), scope (global versus targeted), and level (low versus high), and implements the space in the AMBIPOM prototype for process-level supervision. A user study reveals how people combine these options into hybrid workflows with effort-control-risk trade-offs, while a benchmark examines how LLMs respond to different revision scopes and strategies. The work produces design insights aimed at making human-AI planning more transparent and controllable than outcome-only supervision allows.

Core claim

We formalize a design space for human-LLM co-planning interactions along three axes: mode (semantic vs. structural), scope (global vs. targeted), and level (low vs. high-level edits). We realize it in AMBIPOM, a prototype supporting process-level supervision through both semantic and structural interactions. Through a user study, we characterize how users navigate this space, revealing hybrid workflows and effort-control-risk trade-offs; through a controlled benchmark, we analyze how LLMs revise plans under varying scope and revision strategies. Our findings yield design insights for more transparent, controllable, and effective human-AI co-planning.

What carries the argument

The three-axis design space (mode, scope, level) for human-LLM co-planning interactions, realized in the AMBIPOM prototype to enable process-level supervision.

If this is right

  • Users naturally combine semantic and structural edits at varying scopes and levels into hybrid workflows.
  • Different choices along the three axes produce measurable trade-offs among effort, control gained, and revision risk.
  • LLMs exhibit distinct revision patterns when changes are global versus targeted or when revision strategies differ.
  • Process-level supervision through the design space improves transparency compared with outcome-only checks.

Where Pith is reading between the lines

These are editorial extensions of the paper, not claims the author makes directly.

  • The axes could be tested in domains outside the current benchmark to check whether additional dimensions emerge.
  • Systems built on this space might surface suggested axis combinations to reduce user search effort.
  • The benchmark revision patterns could guide default LLM behaviors when no human edit is supplied.

Load-bearing premise

The three axes of mode, scope, and level sufficiently capture the key dimensions of human-LLM co-planning interactions and the user study plus benchmark results generalize beyond the specific prototype and participant pool.

What would settle it

A larger user study or different multi-agent task in which participants show no hybrid workflows and no measurable gain in perceived control or transparency over outcome-level supervision would falsify the utility of the proposed design space.

Figures

Figures reproduced from arXiv: 2605.23023 by Dan Zhang, Estevam Hruschka, Hannah Kim, Zeyu He.

Figure 1
Figure 1. Figure 1: AMBIPOM supports transparent and controllable human–LLM co-planning through a dual-panel interface. (A) Chat Panel supports plan generation, replanning, and execution feedback, with textualized logs of plan changes for transparency. (B) Plan Panel visualizes the current plan as an editable graph, allowing users to inspect and refine the workflow via DMs. where selection denotes either a subgraph for an aut… view at source ↗
Figure 2
Figure 2. Figure 2: Each node card shows the agent, task, status, ed [PITH_FULL_IMAGE:figures/full_fig_p004_2.png] view at source ↗
read the original abstract

In orchestrated multi-agent systems, humans often struggle to manage plans due to their complexity and limited transparency. Existing approaches rely on outcome-level supervision, where users verify only final outputs without visibility into intermediate reasoning. We formalize a design space for human-LLM co-planning interactions along three axes: mode (semantic vs. structural), scope (global vs. targeted), and level (low vs. high-level edits). We realize it in AMBIPOM, a prototype supporting process-level supervision through both semantic and structural interactions. Through a user study, we characterize how users navigate this space, revealing hybrid workflows and effort-control-risk trade-offs; through a controlled benchmark, we analyze how LLMs revise plans under varying scope and revision strategies. Our findings yield design insights for more transparent, controllable, and effective human-AI co-planning. We release code and data at https://github.com/megagonlabs/ambipom.

Editorial analysis

A structured set of objections, weighed in public.

Desk editor's note, referee report, simulated authors' rebuttal, and a circularity audit. Tearing a paper down is the easy half of reading it; the pith above is the substance, this is the friction.

Referee Report

0 major / 3 minor

Summary. The paper formalizes a three-axis design space for human-LLM co-planning interactions in multi-agent systems (mode: semantic vs. structural; scope: global vs. targeted; level: low vs. high-level edits), realizes the space in the AMBIPOM prototype for process-level supervision, and reports a user study on hybrid workflows and effort-control-risk trade-offs plus a controlled benchmark on LLM plan revisions under varying scopes and strategies. It concludes with design insights for transparent and controllable human-AI co-planning and releases code and data.

Significance. If the empirical findings hold, the work supplies a practical organizing lens for human-AI planning interfaces that moves beyond outcome-only supervision. The public release of code and data is a clear strength that supports reproducibility and follow-on work in the multi-agent systems and HCI communities.

minor comments (3)
  1. Abstract: the description of the user study and benchmark omits sample size, statistical methods, and headline quantitative or qualitative results; adding one sentence summarizing these would improve completeness without lengthening the abstract unduly.
  2. The three axes are presented as a useful design space rather than a provably exhaustive taxonomy; a brief discussion of potential additional dimensions (e.g., temporal or multi-user aspects) would help readers assess scope.
  3. The benchmark section would benefit from an explicit statement of the evaluation metrics and baseline strategies used for the LLM revision comparisons.

Simulated Author's Rebuttal

0 responses · 0 unresolved

We thank the referee for the positive summary, recognition of the design space, AMBIPOM prototype, user study, benchmark, and code/data release, as well as the minor_revision recommendation. No major comments appear in the provided report.

Circularity Check

0 steps flagged

No significant circularity detected

full rationale

This is an HCI/systems design paper that formalizes a three-axis design space for human-LLM co-planning, realizes it in the AMBIPOM prototype, and evaluates it via user study and controlled benchmark. No equations, fitted parameters, predictions, or derivations appear; the axes are presented as an organizing lens rather than a result derived from self-citation chains or self-definitional inputs. The central claims rest on empirical observations from the study and benchmark, which are independent of the formalization itself.

Axiom & Free-Parameter Ledger

0 free parameters · 0 axioms · 1 invented entities

The paper introduces a new design space and prototype based on standard HCI evaluation methods; no free parameters, mathematical axioms, or invented physical entities are evident from the abstract.

invented entities (1)
  • AMBIPOM no independent evidence
    purpose: Prototype system supporting semantic and structural interactions for process-level supervision in multi-agent planning
    New system introduced to realize the proposed design space.

pith-pipeline@v0.9.0 · 5694 in / 1126 out tokens · 22777 ms · 2026-05-25T05:02:40.864637+00:00 · methodology

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Reference graph

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    nodes": [ <list of replanned node objects> ],

    **Valid DAG:** - No isolated nodes. - Exactly one sink node inside the replanned sub-graph. ======================== RESPONSE FORMAT (JSON) ======================== { "nodes": [ <list of replanned node objects> ], "edges": [ <list of replanned edge objects> ] } A sub-graph plan and user feedback are given to you. You job is to revise the subplan based on ...