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Anthropic's Claude 5 family: Fable, Opus, Sonnet, Haiku guide

By PulseAugur Editorial · [4 sources] ·

Anthropic's Claude models offer a tiered approach to AI tasks, with Fable 5, Opus, Sonnet, and Haiku representing different balances of power, speed, and cost. Fable 5 is positioned as the most advanced for complex reasoning, while Opus serves as a strong default for demanding tasks. Sonnet is recommended for everyday use and coding, and Haiku is optimized for high-volume, simpler operations. Users can select models via commands like `/model` and adjust settings like "fast mode" and "effort level" to fine-tune performance and cost-effectiveness. AI

IMPACT Guides users on selecting the most cost-effective and performant Claude model for specific tasks, optimizing AI usage.

RANK_REASON The cluster provides guidance and comparison of existing Anthropic Claude models, rather than announcing a new release.

Read on Medium — Claude tag →

AI-generated summary · Google Gemini · from 4 sources. How we write summaries →

Anthropic's Claude 5 family: Fable, Opus, Sonnet, Haiku guide

How we ranked this

Signal score
0 / 100
Composite score across the factors below. Higher = stronger signal that this story matters right now.
Newsworthiness bucket
Commentary
The cluster provides guidance and comparison of existing Anthropic Claude models, rather than announcing a new release.
Source corroboration
4 independent sources
Strong cross-source corroboration — multiple independent publishers covered this within the clustering window.
Topics
model release, product
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
8 days old
Aged out of breaking-news scoring windows; ranking reflects the durable signal from the full source set.

Full methodology in our editorial standards.

COVERAGE [4]

  1. dev.to — Claude Code tag TIER_1 Polski(PL) · Andrzej Klusiewicz ·

    Claude Code Course: How to Choose a Model - Fable 5, Opus, Sonnet, Haiku, and Fast Mode

    <p>Claude Code oferuje kilka modeli do wyboru, a zla decyzja kosztuje albo pieniadze (zbyt mocny model do prostego zadania), albo czas (za slaby model gubi sie w zlozonym refaktorze). Pokazujemy, kiedy siegnac po ktory model i tryb szybki.</p> <p>Kurs <a href="https://jsystems.pl…

  2. Medium — Claude tag TIER_1 Nederlands(NL) · M. Haseeb Hassan ·

    Choosing Between Opus, Sonnet, and Haiku: A Cost Framework

    <div class="medium-feed-item"><p class="medium-feed-image"><a href="https://levelup.gitconnected.com/choosing-between-opus-sonnet-and-haiku-a-cost-framework-7252414a3e1c?source=rss------claude-5"><img src="https://cdn-images-1.medium.com/max/1200/1*oFGpa6gnmAGhOs74ZxTiBg.png" wid…

  3. Medium — Claude tag TIER_1 English(EN) · Hirun Mihisara ·

    Sonnet 5 vs Opus 5 vs Fable 5: Picking the Right Claude for the Job

    <div class="medium-feed-item"><p class="medium-feed-image"><a href="https://medium.com/@hirunmihisara/sonnet-5-vs-opus-5-vs-fable-5-picking-the-right-claude-for-the-job-fb0d0745f9b1?source=rss------claude-5"><img src="https://cdn-images-1.medium.com/max/1200/1*BK4xk84_yqOaqGUKoqy…

  4. dev.to — LLM tag TIER_1 Français(FR) · Serhii Kalyna ·

    Claude Model Comparison 2026: Haiku vs Sonnet vs Opus

    <blockquote> <p>Originally published at <a href="https://kalyna.pro/claude-model-comparison-2026/" rel="noopener noreferrer">kalyna.pro</a></p> </blockquote> <p>Anthropic's current lineup — <strong>Haiku 4.5</strong>, <strong>Sonnet 5</strong>, <strong>Opus 5</strong>, and <stron…

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