gstack-benchmark-models

Run the same prompt across AI providers and compare latency, tokens, and cost.

Updated May 19, 2026
One-click install
npx skills add https://github.com/anilveersingh1308/copilot-skills --skill gstack-benchmark-models
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: gstack-benchmark-models
Source: https://github.com/anilveersingh1308/copilot-skills/tree/main/.github/skills/gstack-benchmark-models
Command: npx skills add https://github.com/anilveersingh1308/copilot-skills --skill gstack-benchmark-models

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

This Skill removes guesswork when choosing which AI model is best for a given task by running the same prompt across providers and comparing measurable outcomes like latency and cost.

Core Features & Use Cases

  • Cross-model prompt shootouts: Executes the same prompt through Claude, GPT (via Codex CLI), and Gemini side-by-side to compare performance.
  • Actionable comparisons: Reports latency, token usage, and cost, and can optionally add an LLM judge score for output quality.
  • Safe preflight workflow: Forces an auth-aware dry-run first so you can see what providers are ready before any paid benchmark run.
  • Repeatable baselines: Can save benchmark results as JSON so you can compare future runs and detect performance drift.

Quick Start

Run gstack-benchmark-models and choose a prompt (or select a benchmark-able gstack skill) to compare Claude, GPT, and Gemini on the same input.

Frequently Asked Questions about gstack-benchmark-models

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I benchmark and compare LLM providers for latency and cost?

Run the same prompt across Claude, GPT, and Gemini to compare latency, token usage, and cost side-by-side. This benchmarking approach measures performance and spend, with an optional LLM judge scoring output quality.

What is prompt evaluation and how does it work for model selection?

Prompt evaluation for model selection executes the identical prompt through different AI models to compare measurable outcomes. It produces a tabular summary of latency, tokens, and cost to remove guesswork from choosing the best model.

Can I run a dry-run readiness check before benchmarking AI models?

Yes, an auth-aware dry-run readiness check verifies which LLM providers are authenticated and ready before executing a paid benchmark. This safe preflight workflow ensures providers are available before comparing latency and token usage.

How do I save benchmark results to detect model performance drift?

Save benchmark results as JSON to create repeatable baselines for model performance. Comparing future runs against saved latency, token, and cost data detects performance drift over time.

What is the best way to compare AI model quality and spend?

The best way to compare AI model quality and spend is running a repeatable prompt-based shootout across providers. It measures cost against an optional LLM judge score for output quality, producing a tabular summary for direct comparison.