Claude Fable 5.1 vs Sonnet 5.5: Coding Showdown
| Claude Fable 5.1 | Claude Sonnet 5.5 | |
|---|---|---|
| Vendor | Anthropic | Anthropic |
| Text & Chat | #7 · 1501 | #30 · 1475 |
| Coding | #5 · 1743 | #3 · 1774 |
| AI Agents | #6 · 11.74 | #7 · 10.75 |
| Vision | #13 · 1288 | #27 · 1268 |
| Official price | $10 / $50 per 1M in/out | $2 / $10 per 1M in/out |
| On this site | — | — |
Verdict
On the Coding board, Sonnet 5.5 sits at #3 (Index 1774) while Fable 5.1 ranks #5 (Index 1743), giving Sonnet a measurable edge. However, Sonnet 5.5 is far cheaper at $2/$10 per million tokens versus Fable 5.1's $10/$50. Both models are currently unavailable on this site. Fable 5.1 outperforms Sonnet on Text & Chat (#7 vs #30) and AI Agents (#6 vs #7), making it the stronger all-rounder if budget allows.
Choose Claude Fable 5.1 if
- Need stronger general chat and agent skills
- Budget permits premium pricing
Choose Claude Sonnet 5.5 if
- Prioritize highest coding rank per dollar
- Want lower token costs for volume work
Compare them yourself
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