Claude Fable 5.5 vs Claude Sonnet 5.5
aka Fable 5.5 vs Sonnet 5.5
- CheaperClaude Sonnet 5.51/1 postsmedian gap ~6.1×
- FasterClaude Sonnet 5.51/1 postsmedian gap ~2.6×
As stated in each post, not a controlled benchmark.
Posts
1
Same prompt, separate runs
1Not a controlled comparison: prompts, tools and time differ.
About this matchup
Claude Fable 5.5 vs Claude Sonnet 5.5 in real side-by-side tests: 1 post from X where both got the same prompt; 1 post reports cost or time. Judge coding ability from the actual outputs.
Fable 5.5 vs Sonnet 5.5: which is better for coding?
Which is better for coding, Fable 5.5 or Sonnet 5.5?
None of the 1 post here names one of the two as the better result, so judge the outputs above for the work you care about.
Which is cheaper, Fable 5.5 or Sonnet 5.5?
1 post states a cost for both: Claude Sonnet 5.5 was cheaper in it (~6.1× cheaper). These are the costs the posts state for each run, not list prices.
Which is faster, Fable 5.5 or Sonnet 5.5?
1 post states a time for both: Claude Sonnet 5.5 was faster in it (~2.6× faster). Times are as stated in each post; tools and settings differ between posts.
Summary
Claude Fable 5.5 and Claude Sonnet 5.5 appear together in 1 post on X: cow riding a bike in 3D, four Claude 5.5 models (@gmartidesign). It is part of larger lineups with other models. In @gmartidesign's cow riding a bike in 3D, four Claude 5.5 models, Claude Sonnet 5.5 was cheaper ($1.51 vs $9.26) and faster (10 min vs 25.9 min), as reported in the post.
What each post reports
| Post | Model | Time | Cost | Tokens | Post |
|---|---|---|---|---|---|
| Cow riding a bike in 3D, four Claude 5.5 models@gmartidesign | Claude Sonnet 5.5 | 10 min | $1.51 | — | X post |
| Cow riding a bike in 3D, four Claude 5.5 models@gmartidesign | Claude Fable 5.5 | 25.9 min | $9.26 | — | X post |
Only numbers stated in each post. “—” means the post doesn’t say.
Quick facts
| Model | Vendor | Released | Input $/1M tokens | Output $/1M tokens | Context (tokens) | Official links |
|---|---|---|---|---|---|---|
| Claude Fable 5.5 | Anthropic | |||||
| Claude Sonnet 5.5 | Anthropic | 2026-09-28 | $2 | $10 | 1,000,000 | Model docs |
From the vendors’ official pages, checked 2026-10-19. Standard API list prices; each value links its source and a blank cell could not be verified. The archive’s own numbers above are what each post states.
Models
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