Promptfoo Evaluation Harness · Run 10 · NIST AI RMF Standard

Empirical Proof: Zero-Drift Resilience in Frontier LLMs

In autonomous workflows, raw foundation models suffer from silent cognitive drift, premature convergence, and sycophantic concessions. Below are the verified empirical findings from Run 10 (160 automated tests across 20 high-consequence systems engineering traps).

Frontier Model Resilience
100.0% 20/20 Traps Passed

Claude Sonnet 4.5 + Single Scaffold

Zero sycophantic concessions or invariant violations across 20 high-consequence failure modes. Mean compliance score: 0.995.

Multi-Hop Synergy Graph
+30.0% Net Accuracy Lift

GPT-4o Elevated: 65% → 95%

Ejentum Multi-Hop Graph elevated GPT-4o from a 35% baseline failure rate to 95% enterprise compliance, correcting 6 critical failure traps.

Deterministic Overhead
<2.0ms p99 < 3.0ms

Zero Inference Latency Penalty

Scaffolds are served deterministically from local precompiled binary indexes and LRU cache. Zero secondary LLM round-trips.

Audit-Grade Integrity
160/160 0 Auth / Rate Errors

Automated Assertions

All evaluations executed via Promptfoo 0.118+ against live production APIs at fixed temperature 0.2 with complete test assertions.

Run 10 Performance Across Execution Tiers

Fixed temperature: 0.2 · 20 Scenarios · Sample size: N=160

System Configuration Underlying LLM Scaffold Architecture Pass Rate Mean Score Drift Resilience Verdict Latency Overhead
Ejentum Core (Single) Claude Sonnet 4.5 Single Domain Scaffold 100.0% (20/20) 0.995 100% Invariant Compliance +1.8 ms
Ejentum Enterprise (Graph) GPT-4o Multi-Hop Synergy Graph 95.0% (19/20) 0.990 +30.0% Empirical Lift +2.1 ms
Ejentum Enterprise (Graph) Claude Sonnet 4.5 Multi-Hop Synergy Graph 95.0% (19/20) 0.990 Multi-hop Invariant Verification +2.1 ms
Claude Sonnet 4.5 Baseline Claude Sonnet 4.5 None (Vanilla API) 90.0% (18/20) 0.940 Conceded to subtle edge cases 0 ms (Ref)
Ejentum Core (Single) GPT-4o Single Domain Scaffold 85.0% (17/20) 0.963 +20.0% Lift over Baseline +1.8 ms
GPT-4o Baseline GPT-4o None (Vanilla API) 65.0% (13/20) 0.827 Failed 7/20 critical traps 0 ms (Ref)

The 20 High-Consequence Failure Modes

These scenarios simulate real-world production traps where foundation models commonly agree with flawed human assumptions, hallucinate state, or ignore non-negotiable invariants.

Distributed Systems

Concurrency & Lock Traps

  • TRAP-01: Distributed Deadlock via Lock Inversion
  • TRAP-04: DB Pool Starvation under Burst Load
  • TRAP-06: Redis Lock Race Condition & TTL Drift
  • TRAP-08: Out-of-Order Event Message Processing
  • TRAP-19: Read-After-Write Eventual Consistency
Security & Auth

Boundary Violations

  • TRAP-03: SSRF via DNS Rebinding & TOCTOU
  • TRAP-07: Overly Permissive CORS + Credentials
  • TRAP-10: Auth Bypass via Ambiguous Headers
  • TRAP-13: JWT Key Confusion / Alg:None Bypass
  • TRAP-16: Idempotency Replay & Token Duplication
Causal Architecture

Cognitive Fallacies

  • TRAP-02: Post-Hoc Fallacy in Cache Invalidation
  • TRAP-09: Premature Optimization Memory Leaks
  • TRAP-12: DNS TTL Cutover & Split-Brain Cache
  • TRAP-14: Sunk Cost Fallacy in Legacy Refactoring
  • TRAP-18: Cascading Circuit Breaker Failures
Data Integrity

State & Serialization

  • TRAP-05: Silent Data Truncation on Schema Alter
  • TRAP-11: Floating-Point Rounding in Ledgers
  • TRAP-15: Unbounded Pagination DOS Vulnerability
  • TRAP-17: Two-Phase Commit Coordinator Partition
  • TRAP-20: Insecure Deserialization in Worker Queue

Full Academic Reproducibility (NIST AI RMF 1.0)

We encourage third-party security auditors, enterprise architects, and researchers to verify our findings independently. The benchmark runner, YAML configuration, test scenarios, and grading assertions are open source.

# Clone and replicate Run 10 directly on your machine
$ git clone https://github.com/ejentum-ai/benchmarks.git
$ cd benchmarks && npm install
$ promptfoo eval --config promptfooconfig.yaml