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arxiv: 2605.27492 · v1 · pith:QQ5XNQA4new · submitted 2026-05-26 · 💻 cs.SE · cs.AI

Benchmarks are Not Enough: RAMP for Runtime Assessing of Agentic Models in Production Systems

Pith reviewed 2026-06-29 15:29 UTC · model grok-4.3

classification 💻 cs.SE cs.AI
keywords LLM agentsruntime assessmentsoftware engineering workflowsagentic modelsproduction systemsbenchmark limitationstask completion rates
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The pith

RAMP shows agentic models' performance collapses in long serial workflows, with none completing full pipelines despite benchmark success.

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

The paper introduces RAMP as a runtime assessment framework for LLM-based software engineering agents using realistic compiler construction tasks with serial dependencies. It demonstrates that models exhibit severe degradation in task completion rates across multiple stages, dropping from full success initially to only 20 percent in later stages. This degradation and related inefficiencies in resource use are not captured by traditional static benchmarks. The work argues for shifting evaluation to continuous, production-like runtime environments to better reflect practical capabilities.

Core claim

RAMP, built on the YatCC platform, uses standardized interfaces for long-horizon compiler-construction workloads and a staged recovery mechanism to evaluate agent performance under partial failures. Assessments of 15 models reveal progressive collapse in completion rates and up to three orders of magnitude difference in computational costs, with no model finishing the entire pipeline.

What carries the argument

RAMP framework providing unified runtime assessment architecture with realistic workloads, staged recovery, and utility-oriented multi-dimensional metrics for outcome quality and process efficiency.

If this is right

  • Task completion rates in serial workflows drop from 100% to 20% across stages.
  • None of the 15 evaluated models complete the full pipeline.
  • Computational costs vary by up to three orders of magnitude among models.
  • Systematic failure propagation occurs in long execution chains.

Where Pith is reading between the lines

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

  • Evaluation of agentic models may need to prioritize runtime observability over isolated benchmark scores.
  • Production systems could benefit from incorporating staged recovery mechanisms to handle partial failures in agent workflows.
  • Resource efficiency should be a core metric alongside task success in agent assessments.

Load-bearing premise

The chosen compiler-construction workloads with serial dependencies and complex toolchain interactions represent the dynamic complexity of real-world production software engineering workflows.

What would settle it

Running the same 15 models on a different set of long-horizon production tasks without the staged recovery mechanism and observing if completion rates still collapse to 20% or if any model completes the full pipeline.

Figures

Figures reproduced from arXiv: 2605.27492 by Bingjie Liu, Xianwei Zhang, Xin Huang, Yipeng Ouyang, Yuhao Gu, Zhongchun Zheng.

Figure 1
Figure 1. Figure 1: YatCC, with Compiler-Construction Tasks and Uni￾fied Environment Management. 2.1.1 Compiler-Construction Tasks. The compiler-construction tasks built on YatCC [9] is based on LLVM [13], which has been exten￾sively used as real-world compiler coursework and engineering exercises. The workload consists of six sequentially dependent compilation stages or tasks, where each task produces an inter￾mediate artifa… view at source ↗
Figure 2
Figure 2. Figure 2: The framework of Ramp that enables unified and extensible integration of heterogeneous agentic models and backends. 4 [PITH_FULL_IMAGE:figures/full_fig_p004_2.png] view at source ↗
Figure 3
Figure 3. Figure 3: Long-horizon assessment workloads in the integrated pipeline of [PITH_FULL_IMAGE:figures/full_fig_p005_3.png] view at source ↗
Figure 4
Figure 4. Figure 4: Per-task score distribution of LLM agents. Models (y-axis) are ranked by overall mean reward. The x-axis is divided [PITH_FULL_IMAGE:figures/full_fig_p009_4.png] view at source ↗
Figure 5
Figure 5. Figure 5: Trade-off of cost and performance: elapsed time (left) and API cost (right) vs. mean reward across 15 models ( [PITH_FULL_IMAGE:figures/full_fig_p010_5.png] view at source ↗
Figure 6
Figure 6. Figure 6: Multi-dimensional efficiency profiles. The radar axes show pipeline stage, mean stage-wise reward, inverted wall-clock [PITH_FULL_IMAGE:figures/full_fig_p011_6.png] view at source ↗
Figure 7
Figure 7. Figure 7: Multi-dimensional efficiency profiles. The radar axes show pipeline stage, mean stage-wise reward, inverted wall-clock [PITH_FULL_IMAGE:figures/full_fig_p012_7.png] view at source ↗
read the original abstract

LLM agents are rapidly evolving from coding assistants into autonomous software engineering systems. However, existing evaluation methodologies remain largely centered on static, isolated, and short-horizon benchmarks that fail to capture the dynamic complexity of real-world production workflows. As a result, benchmark performance may poorly reflect practical capability under realistic runtime environments involving long execution chains, tool interactions, dependency management, and iterative feedback loops. We thus present RAMP, a production-grounded infrastructure for assessing long-horizon software engineering agents. Built upon the YatCC integrated platform, RAMP provides a unified runtime assessment architecture through standardized orchestration and execution interfaces. RAMP introduces realistic compiler-construction workloads with serial dependencies and complex toolchain interactions, together with a staged recovery mechanism for analyzing execution behavior under partial workflow failure. The framework further incorporates utility-oriented multi-dimensional metrics that jointly evaluate outcome quality and process efficiency. We conduct runtime assessments across 15 mainstream models and observe substantial capability degradation that remains largely invisible to conventional isolated benchmarks. Task completion rates progressively collapse across serial workflows, dropping from 100% in the initial stage to only 20% in the final stage, while none of the evaluated models successfully completes the entire pipeline. Runtime analysis reveals systematic failure propagation and significant resource inefficiencies, with computational costs differing by up to three orders of magnitude among comparable models. These findings suggest RAMP advances agentic model evaluation toward continuous, runtime-observable, and production-grounded assessment.

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

2 major / 1 minor

Summary. The paper claims that static benchmarks fail to capture the dynamic complexity of production software engineering workflows for LLM agents. It introduces RAMP, a runtime assessment infrastructure on the YatCC platform that uses compiler-construction workloads with serial dependencies and a staged recovery mechanism, along with multi-dimensional utility metrics. Runtime evaluation of 15 models shows task completion collapsing from 100% in the first stage to 20% in the final stage, with zero models completing the full pipeline, plus large variations in resource costs; the authors conclude that production-grounded runtime assessment is required.

Significance. If the workloads prove representative of broader production SE tasks, the observed progressive failure propagation and cost disparities would provide concrete evidence that isolated benchmarks underestimate long-horizon agent limitations, supporting a shift toward continuous runtime evaluation frameworks. The staged recovery analysis and joint outcome-process metrics are practical contributions that could be adopted by other agent evaluation efforts.

major comments (2)
  1. [Abstract and evaluation description] Abstract and the description of the evaluation: the central empirical claim of progressive collapse (100% to 20% completion, zero full-pipeline successes) is reported without model selection criteria, precise definitions of the utility-oriented metrics, handling of partial failures, or any error bars or statistical tests. These omissions make it impossible to assess whether the degradation pattern is robust or reproducible.
  2. [Workload design and framework sections] Workload design and framework sections: the broader conclusion that 'benchmarks are not enough' for production systems depends on the compiler-construction workloads with serial dependencies serving as a valid proxy. No validation is supplied (e.g., expert review, coverage of non-compiler domains such as distributed services, or comparison of dependency graphs to industry workflows), so the observed failure modes could be artifacts of the narrow domain rather than a general property of agentic SE.
minor comments (1)
  1. [Title] The phrase 'RAMP for Runtime Assessing' in the title is grammatically awkward and should be revised to 'RAMP for Runtime Assessment of Agentic Models'.

Simulated Author's Rebuttal

2 responses · 0 unresolved

We thank the referee for the constructive feedback. We address each major comment below with planned revisions to improve clarity, reproducibility, and framing of the claims.

read point-by-point responses
  1. Referee: [Abstract and evaluation description] Abstract and the description of the evaluation: the central empirical claim of progressive collapse (100% to 20% completion, zero full-pipeline successes) is reported without model selection criteria, precise definitions of the utility-oriented metrics, handling of partial failures, or any error bars or statistical tests. These omissions make it impossible to assess whether the degradation pattern is robust or reproducible.

    Authors: We agree that these details are required for readers to evaluate robustness. The revised manuscript will add: explicit model selection criteria (stratified sampling across open-source and proprietary models based on coding benchmark performance and availability); formal definitions and formulas for the utility-oriented metrics (joint outcome-process scores with explicit weighting); a precise description of partial-failure handling within the staged recovery mechanism; and error bars with statistical tests (binomial confidence intervals and McNemar tests for stage-wise completion rates). These additions will be placed in the evaluation section and abstract. revision: yes

  2. Referee: [Workload design and framework sections] Workload design and framework sections: the broader conclusion that 'benchmarks are not enough' for production systems depends on the compiler-construction workloads with serial dependencies serving as a valid proxy. No validation is supplied (e.g., expert review, coverage of non-compiler domains such as distributed services, or comparison of dependency graphs to industry workflows), so the observed failure modes could be artifacts of the narrow domain rather than a general property of agentic SE.

    Authors: We accept that stronger justification is needed for the proxy claim. The workloads were selected for their long serial dependency chains and toolchain interactions that mirror production SE characteristics, but the original submission did not supply external validation. The revision will expand the workload design section with: (1) explicit rationale linking dependency graphs to patterns observed in large open-source repositories, (2) a limitations paragraph acknowledging the compiler-construction focus and absence of coverage for domains such as distributed services, and (3) a call for future multi-domain studies. We will not claim generalizability beyond the evaluated setting. revision: partial

Circularity Check

0 steps flagged

No circularity: empirical framework with direct observations

full rationale

The paper introduces the RAMP framework and reports empirical results from runtime assessments of 15 models on compiler-construction workloads. No derivations, equations, fitted parameters, predictions, or self-citations are described that reduce the central claims to inputs by construction. The observed collapse in completion rates (100% to 20%, zero full pipelines) is presented as a direct measurement within the RAMP setup. The representativeness of the workloads is an unvalidated assumption but does not create circularity in any derivation chain. This is a standard empirical comparison paper with no load-bearing self-referential steps.

Axiom & Free-Parameter Ledger

0 free parameters · 0 axioms · 0 invented entities

Abstract supplies no free parameters, axioms, or invented entities; all claims rest on the unstated assumption that the described workloads are representative.

pith-pipeline@v0.9.1-grok · 5800 in / 1066 out tokens · 33455 ms · 2026-06-29T15:29:24.884801+00:00 · methodology

discussion (0)

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