How do I install the Which LLM Claude Code skill?

Install via the ClaudSkills desktop app (one click) or copy SKILL.md from the source repository to ~/.claude/skills/which-llm/SKILL.md and restart Claude Code. Both flows are detailed at https://claudskills.com/install/.

Is this skill free to install?

Yes. ClaudSkills is an open registry — every skill keeps its source repository's license, and manual install via copy is free. ClaudSkills Pro ($9/mo, $79/yr, or $149 one-time) adds one-click install via the desktop app and a multi-signal Quality Score.

ClaudSkills / General / general-misc

Which LLM

Category: General · Sub-category: general-misc · Last updated: 2026-05-24

Look up current LLM intelligence, cost-to-run, benchmark scores, capabilities, and OpenRouter slugs (including :free tier). Use whenever the user asks "which model should I use", "what's the cheapest model that…", "compare model X vs Y", "is there a free version of X", "what's the OpenRouter slug for X", or is about to wire up an LLM API call and could benefit from a current model recommendation.

From the source SKILL.md

Up-to-date data on ~520 LLMs scraped from artificialanalysis.ai and cross-referenced with the OpenRouter catalog. Trains-time knowledge of model lineups goes stale fast. Use this skill instead of guessing.

What this skill does

Which LLM is a community-contributed Claude Code skill in the general-misc sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/which-llm/ and loads when your prompt matches the skill's trigger.

When to invoke it: Use whenever the user asks "which model should I use", "what's the cheapest model that…", "compare model X vs Y", "is there a free version of X", "what's the OpenRouter slug for X", or is about to wire up an LLM API call and could benefit from a current model recommendation.

Who uses this skill

The Which LLM Claude Code skill is built for Claude Code users and developers across all disciplines looking for general-purpose AI assistance. It's part of ClaudSkills (also referred to as Claude Skills or Claude Code Skills) — the open community-curated registry of 70,000+ SKILL.md files for Anthropic's Claude Code agent and the wider Claude ecosystem (Claude API, Claude Agent SDK).

How to install

Free

Manual install (2 steps)

mkdir -p ~/.claude/skills/which-llm
curl -L https://claudskills.com/skills/which-llm/SKILL.md \
  -o ~/.claude/skills/which-llm/SKILL.md

Or just download SKILL.md directly and drop it into ~/.claude/skills/which-llm/. Claude Code auto-discovers it on next session.

Skills live at ~/.claude/skills/which-llm/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\which-llm\SKILL.md on Windows. See the full install guide for step-by-step instructions.

Pro

One-click install via the desktop app

The ClaudSkills desktop app installs any skill directly into ~/.claude/skills/ with one click — no terminal required. Pro starts at $9/mo or $149 lifetime.

Pro

For the full experience including quality scoring and one-click install features for each skill — upgrade to Pro.

See pricing → Download desktop app

Attribution & license

Source: https://github.com/ariobarin/which-llm/blob/HEAD/plugins/which-llm/skills/which-llm/SKILL.md
License: MIT
Author: ariobarin
Website: https://github.com/ariobarin/which-llm

Cite this skill

If you reference this skill in a blog post, paper, or documentation, you can cite it as:

APA

ariobarin. (2026). Which LLM [Claude Code skill]. ClaudSkills. https://claudskills.com/skills/which-llm/

BibTeX

@misc{which-llm-2026,
  author    = {ariobarin},
  title     = {Which LLM [Claude Code skill]},
  year      = {2026},
  publisher = {ClaudSkills},
  url       = {https://claudskills.com/skills/which-llm/}
}

Embed this skill

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Part of ClaudSkills — the open registry for Claude Skills & Claude Code Skills. · What's New · Install guide · About · llms.txt

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