ResearchResearch paperLarge Language Models · Reasoning & Planning · Training & Scaling1 source · Oct 19, 2026

TEX: Test-Time Scaling Testing Agents via Execution-based Cross-Validation

We present TEX, a collaborative test-time scaling framework based on execution-driven cross-validation.

Key points

  • Test-case generation is critical but remains challenging for language models.
  • Existing test-time scaling methods either isolate candidates or aggregate traces, which do not scale to long-horizon tasks.
  • TEX parallelizes agents to generate tests and patches, cross-executing each test against every patch to form a $K \times K$ feedback matrix.
  • Our results highlight execution-grounded feedback as an effective scaling mechanism for long-horizon agentic tasks.

Sources (1)

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