pick-model

pick-model is a skill for Claude Code, Codex from pantheon-org/tekhne. It costs 51 tokens per session (2,852 once invoked), scanned A, original, MIT.

A task guide that recommends one of three Claude models—Haiku, Sonnet, or Opus—based on the kind of work you need done.

In plain words
What is it for?
Use it when asking which model fits a task or before starting costly work such as a multi-file refactor, security audit, or complex debugging.
Why use it?
It removes the guesswork of choosing between a faster, simpler model and a more capable model for difficult work.

Skill for Claude CodeCodex

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add skills/pantheon-org/tekhne/pick-model
Any agent
npx skills add pantheon-org/tekhne --skill pick-model
Clone the repo
git clone --depth 1 https://github.com/pantheon-org/tekhne

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for pick-model

README.md
[![agentmods](https://agentmods.dev/badge/skills/pantheon-org/tekhne/pick-model.svg)](https://agentmods.dev/skills/pantheon-org/tekhne/pick-model)
Your own site
<a href="https://agentmods.dev/skills/pantheon-org/tekhne/pick-model"><img src="https://agentmods.dev/badge/skills/pantheon-org/tekhne/pick-model.svg" alt="Measured on agentmods" height="20"></a>
Per session 51 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,852 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00051 $0.02852
Opus 5 $0.00026 $0.01426
Sonnet 5 $0.00010 $0.00570
Haiku 4.5 $0.00005 $0.00285

Measured 5d ago against content hash 2815724d9f8e, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-05, from the pricing page.

Security

Grade A, and why

pick-model scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 5d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

skills/agentic-harness/pick-model/SKILL.md · 225 lines

How it starts

The opening of the file, as written. The whole thing — 225 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Pick Model

Classify user's task → recommend optimal model with reasoning.

Instructions

  1. Parse task description from $ARGUMENTS
  2. Classify against decision matrix below
  3. Output recommendation using format template

Decision Matrix

Technical Tasks

Model When to Use
🟢 Haiku Simple transforms, formatting, regex, typo fix, status query, template fill, data extraction, factual lookup (no reasoning), file conversion
🟡 Sonnet Single-file coding, bug fix, code review, moderate debugging, test writing, PR review, standard refactoring, technical docs, API integration (known patterns)
🔴 Opus Multi-file refactor (3+ files), architecture/design decisions, complex debugging (multi-system), framework migration, security audit, novel algorithm design, system design with trade-offs

Business & Strategy Tasks

Model When to Use
🟢 Haiku Summarization (<2K words), data extraction, status reports, simple translations, template filling, meeting notes formatting
🟡 Sonnet Content creation (blog, email, docs), research summaries, competitive analysis, standard business writing, persuasive proposals, marketing copy, customer communications
🔴 Opus Strategic planning, business model design, M&A analysis, organizational design, change management plans, competitive strategy, market entry decisions, crisis response, stakeholder management (competing interests), long-form reports (>2K words), executive presentations with nuance

Creative & Analysis Tasks

Model When to Use
🟢 Haiku Basic formatting, simple data viz suggestions, straightforward categorization
🟡 Sonnet Creative writing, brainstorming (single framework), persona development, user research synthesis, A/B test analysis, survey analysis
🔴 Opus Multi-framework brainstorming (SCAMPER + Starbursting + trade-off analysis), cross-session pattern detection, bias identification, retrospective analysis, ethical reasoning, strategic foresight, scenario planning

Read the full file on GitHub · 225 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 5d ago First seen · 225 lines · 51 tokens per session scan A 2815724d9f8e

Subscribe to this mod's changes

pick-model is a skill published in the GitHub repository pantheon-org/tekhne (10 stars, last pushed 4d ago), licensed MIT. It adds 51 tokens to every session and 2,852 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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