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Luis Mori Guerra

Engineering Manager / Technical Lead

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How to Make GitHub Spec Kit Produce Leaner OutputDo New Frontier LLMs Really Resolve Ambiguity Better?Let's Build Prompt-First Repositories for Your ApplicationsWhy GitHub Spec Kit Is So Interesting: Six Skills Worth StudyingClaude Low Effort Compared: Fable 5 vs Opus 4.8 vs Sonnet 5

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Opus 4.8

A topic hub collecting every article tagged Opus 4.8. Use it to explore related posts and follow this theme across the site.

2 articles

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AI Agents AI Architecture Claude Code LLM Loop Engineering
Claude Anthropic Fable 5 Opus 4.8 Sonnet 5 Low Effort AI Engineering Coding Agents

Claude Low Effort Compared: Fable 5 vs Opus 4.8 vs Sonnet 5

Compare Fable 5 Low, Opus 4.8 Low, and Sonnet 5 Low for coding and planning, including task cost, cross-effort surprises, and a practical routing policy.

Jul 16, 2026 16 min read
Claude Anthropic Fable 5 Opus 4.8 Sonnet 5 Ultracode AI Engineering Coding Agents

Fable 5 High vs Opus 4.8 High vs Sonnet 5 High: A Practical Claude Model Guide

Compare Fable 5, Opus 4.8, and Sonnet 5 at High effort using CursorBench 3.2, then see when Ultracode changes the model-routing decision.

Jul 15, 2026 19 min read

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