--- title: I finally get Fable 5 | daily.dev description: A developer shares their experience using Claude's 'Fable' model (Claude 4/Sonnet 5-level) with Claude Code for agentic software development. Key workflow tips... canonical: https://daily.dev/posts/i-finally-get-fable-5-5lkjskfol twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: I finally get Fable 5 | daily.dev og:description: A developer shares their experience using Claude's 'Fable' model (Claude 4/Sonnet 5-level) with Claude Code for agentic software development. Key workflow tips... og:url: https://daily.dev/posts/i-finally-get-fable-5-5lkjskfol og:image: https://api.daily.dev/og/posts/5lKJSKfOL.png og:image:alt: I finally get Fable 5 og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # I finally get Fable 5 **[Theo - t3․gg](https://daily.dev/sources/t3dotgg)** · 43 min read · 3 upvotes · 0 comments ## Summary A developer shares their experience using Claude's 'Fable' model (Claude 4/Sonnet 5-level) with Claude Code for agentic software development. Key workflow tips include: keeping reasoning effort at 'high' (not X-high or max) to avoid overthinking and runaway costs, routing token-heavy tasks to GPT-4.5/Codex via shell calls, configuring claude.md with model rankings by intelligence/taste/cost, using sub-agents and workflows for parallelizing PR triage and implementation, and setting up 'goals' that let the agent autonomously merge PRs through staging. The author closed ~12 PRs in a single 5.5-hour session for ~$150 by combining Claude Code with Codex computer use skills. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Questions this post answers ### Should I use Claude's max or ultra reasoning effort setting for coding tasks in Claude Code? No, sticking to low, medium, or especially high reasoning effort is recommended over the x-high, max, or ultra code options. The higher settings cause the model to overthink each step, second-guess itself in loops, produce overdone code with unnecessary changes, and run up costs far higher than needed, without actually enabling more steps or harder problem-solving than the high setting provides. _Developers tuning agent cost and quality tradeoffs can compare real workflow write-ups like this on daily.dev._ ### How can I reduce token costs when running Claude Code with large agentic workflows? Route token-heavy tasks like log digging, PDF parsing, and computer-use browsing to a cheaper model such as GPT-5.5 through the Codex CLI instead of running everything through the primary model. One workflow reported running Claude Code and Codex subscriptions for roughly $150 total across a week of heavy multi-agent work that would have cost thousands of dollars if handled entirely by the flagship model. _Anyone juggling multiple AI coding subscriptions can track cost-saving techniques like this via daily.dev._ ### What is the difference between workflows and sub-agents in Claude Code? Sub-agents are spawned instances that each handle one discrete task, such as analyzing one file among several in parallel, while workflows are programmatically defined multi-stage scripts that pass results from one stage to dynamically queue work in the next stage. Workflows suit deterministic fan-out-and-verify tasks, but checkpoint-driven work needing human review between steps is better handled by orchestrating from a live session rather than a single monolithic workflow. _Developers designing multi-agent coding pipelines can find workflow-versus-agent breakdowns like this on daily.dev._ --- Tags: [#ai-agents](https://daily.dev/tags/ai-agents), [#claude-code](https://daily.dev/tags/claude-code), [#vibe-coding](https://daily.dev/tags/vibe-coding), [#openai-codex](https://daily.dev/tags/openai-codex) [View this post on daily.dev](https://daily.dev/posts/i-finally-get-fable-5-5lkjskfol) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"I finally get Fable 5","url":"https://daily.dev/posts/i-finally-get-fable-5-5lkjskfol","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/i-finally-get-fable-5-5lkjskfol"},"datePublished":"2026-07-06T01:57:52.733Z","dateModified":"2026-09-14T08:30:34.283Z","description":"A developer shares their experience using Claude's 'Fable' model (Claude 4/Sonnet 5-level) with Claude Code for agentic software development. 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