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Claude Code uses Jev to auto-route prompts to Opus, Sonnet, and Haiku

By PulseAugur Editorial · [1 sources] ·

A developer has created a plugin for Claude Code that utilizes Jev, a classification model from TypeSafe AI, to intelligently route prompts to different Claude models. This system aims to optimize cost and performance by assigning simpler prompts to less powerful models like Haiku and more complex ones to Opus. Jev analyzes prompts and assigns them a capability tier, which the plugin then uses to select the appropriate Claude model and effort level for each interaction. AI

IMPACT Enables more cost-effective use of LLMs by dynamically selecting the appropriate model for specific tasks.

RANK_REASON Developer-created tool integrating existing AI models.

Read on dev.to — LLM tag →

AI-generated summary · Google Gemini · from 1 sources. How we write summaries →

Claude Code uses Jev to auto-route prompts to Opus, Sonnet, and Haiku

How we ranked this

Signal score
32 / 100
Composite score across the factors below. Higher = stronger signal that this story matters right now.
Newsworthiness bucket
Tool
Developer-created tool integrating existing AI models.
Source corroboration
Single-source cluster
Only one publisher covered this so far. Single-source stories can still rank when the publisher is high-authority, but they lack cross-source corroboration.
Topics
product, infra
Editorial topic classification. Feeds into how the story surfaces on /topic/<slug> hub pages and into the per-entity coverage mix.
AI-industry relevance
High
Clearly on-topic for AI-industry coverage.
Story freshness
Breaking (< 6h)
Fresh story with cross-source coverage still developing. Ranking may shift as more sources report.

Full methodology in our editorial standards.

COVERAGE [1]

  1. dev.to — LLM tag TIER_1 English(EN) · Toshiya Matsumoto ·

    🚦 Auto-routing Claude models with Jev prompt classification

    <p><em>Originally published in Japanese on Zenn: <a href="https://zenn.dev/toshibowie/articles/9244c8f317a7a9" rel="noopener noreferrer">Jevでプロンプトを仕分けして、Claudeのモデルを自動で切り替える</a></em></p> <h2> Goal 🎯 </h2> <ul> <li>Stop burning Opus on "hello" and Haiku on design decisions</li> <li…

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