What problem does it solve? Comparing AI coding assistants like Codex, Gemini, Claude, and Cursor-Agent on real tasks is slow and subjective. This Skill dispatches one task to all providers in parallel, scores responses with an opposite-model Claude meta-judge, and produces a ranked leaderboard with quality, cost, time, and self-eval bias metrics. ## Core Features & Use Cases - Parallel Multi-Provider Dispatch: Sends the same task to Codex, Gemini, Claude, and Cursor-Agent simultaneously and collects responses with cost and timing data. - Meta-Judge Scoring: Uses an opposite-model Claude judge to score completeness, accuracy, actionability, and hallucination-freedom, with shuffled presentation order to reduce bias. - Corpus Mode: Runs fixed OrderService and useSearchProducts tasks so results are comparable across runs over time, with optional test-writing and adversarial cross-review rounds. - Use Case: Run a benchmark in corpus mode each week to track whether a provider's code quality is improving, then compare two historical runs with the --compare flag to see quality, time, and cost deltas. ## Quick Start Ask the AI to run the benchmark skill in corpus mode with tests enabled to compare all available AI coding providers on the fixed tasks.