Claude Fable 5.1 vs. Claude Opus 5.5: Model Comparison
| Claude Fable 5.1 | Claude Opus 5.5 | |
|---|---|---|
| Vendor | Anthropic | Anthropic |
| Text & Chat | #7 · 1501 | #3 · 1508 |
| Coding | #5 · 1743 | #1 · 1811 |
| AI Agents | #6 · 11.74 | #1 · 17.89 |
| Vision | #13 · 1288 | — |
| Official price | $10 / $50 per 1M in/out | $4 / $20 per 1M in/out |
| On this site | — | — |
Verdict
Claude Opus 5.5 holds a clear performance advantage over Claude Fable 5.1 across all tracked categories. It ranks higher on the Text & Chat board (3rd vs 7th), leads the Coding board at 1st place, and dominates the AI Agents category with a significantly higher HuaLinYuan Index. Additionally, Opus 5.5 is more cost-effective, with input and output pricing at $4.0 and $20.0 per million tokens, respectively, compared to Fable 5.1's $10.0 and $50.0. While neither model is currently available on our site, Opus 5.5 offers superior technical utility and better economic value for users requiring high-performance reasoning and coding capabilities.
Choose Claude Fable 5.1 if
- Specific use cases requiring Fable 5.1 architecture
- Preference for Fable 5.1's specific model profile
Choose Claude Opus 5.5 if
- Superior performance in coding and agents
- Better cost efficiency for high-volume tasks
Compare them yourself
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