Claude Fable 5 vs Claude Sonnet 5 for travel planning

The verdict

Claude Fable 5 wins, 9388

Same 12 travel planning tasks, marked blind by three rival labs. Claude Fable 5 took 2 tasks, Claude Sonnet 5 took 0, 10 tied. Tested 16 Aug 2026.

Where they differed most

The task — Three days, one toddler

Build a 3-day Edinburgh plan using ONLY these, with the opening info given: Castle (9.30-5, steep cobbled approach), Dynamic Earth (10-5, buggy-friendly), National Museum of Scotland (10-5, free), Botanic Garden (10-6, free, mostly outdoors), Camera Obscura (9.30-8, cramped stairs), Portobello beach (open access). Rules a toddler imposes: one anchor activity per day, everything after 1pm assumes the nap happened, and a rain plan every day. Say which attraction you would DROP entirely and why.

# Edinburgh with a Toddler: 3 Days, 5 Attractions

## The Drop: Camera Obscura ❌
**Why:** Cramped stairs are the single worst feature for a toddler-and-buggy setup — you'd be carrying a child AND folding a pushchair through tight Victorian staircases, in crowds. It's also right next to the Castle, so you lose nothing geographically. Its one advantage (open until 8pm) is useless when your day effectively ends at toddler bedtime anyway.

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## Day 1 — Anchor: Edinburgh Castle 🏰
- **9:30 sharp:** Arrive at opening. Toddler energy is highest, cr…
# Edinburgh with a Toddler: 3-Day Plan

**Core logic:** One anchor per morning (pre-nap peak energy), nap in the buggy/at accommodation early afternoon, low-key recovery activity only *if* the nap actually happened, and every day needs a rain fallback that doesn't require the nap to have gone well.

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## Day 1
**Anchor (AM): National Museum of Scotland** (10-5, free)
- Free means no pressure to "get your money's worth" if you bail at 45 minutes. Indoor, climate-controlled, lots of big objects (skeletons, machinery) toddlers actually look at.…

Task by task

TaskClaude Fable 5Claude Sonnet 5
The impossible family holiday99
Three days, one toddler95
Hand luggage, February, Krakow99
Will we make it?99
Total the real cost98
The ferry is cancelled99
Check, don't assume99
Declare it or regret it99
Next September's weather1010
Brief the dog-sitter1010
Tokyo by Thursday, sharp by Friday99
Refuse the customs dodge1010

Full receipts: Claude Fable 5, Claude Sonnet 5 · judges gemini-3.1-pro-preview, gpt-5.6-terra, grok-4.5

Questions people ask

Which is better for travel planning: Claude Fable 5 or Claude Sonnet 5?

Claude Fable 5 — it scored 93/100 against 88/100 on our 12-task travel planning suite, winning 2 tasks to 0 with 10 tied. Every answer was marked blind by three judges from three rival AI labs.

How was this tested?

Both models answered the identical published travel planning tasks. Three AI judges from three different labs scored every answer blind against a fixed rubric; mechanically checkable rules (word limits, banned phrases) are enforced by the test harness in code. The raw outputs and judge verdicts are downloadable.

More travel planning head-to-heads: Claude Fable 5 vs GPT-5.6 Sol · Claude Sonnet 5 vs GPT-5.6 Sol · Claude Fable 5 vs GPT-5.6 Luna · Claude Sonnet 5 vs GPT-5.6 Luna · Claude Fable 5 vs GPT-5.5 · Claude Sonnet 5 vs GPT-5.5

Full ranking: Best AI for travel planning · model pages: Claude Fable 5, Claude Sonnet 5