Claude Fable 5 vs Claude Fable 5.1
Both have similar output pricing. Choose Claude Fable 5 or Claude Fable 5.1 based on the trade-off between cost, context, and the benchmarks that matter for your use case.
| Spec | Claude Fable 5 | Claude Fable 5.1 |
|---|---|---|
| Provider | Anthropic | Anthropic |
| Input / 1M tokens | $10.00 | $10.00 |
| Output / 1M tokens | $50.00 | $50.00 |
| Context window | 1M | 1M |
| Parameters | — | — |
| Open weights | No | — |
| Released | Jun 2026 | — |
| LiveBench score | 78.6 | — |
| GPQA Diamond score | 85.9 | — |
| Epoch Capabilities Index score | 163 | 166 |
| LMArena (Chatbot Arena) Elo score | 1492 | 1514 |
| LMArena WebDev Elo score | 1624 | 1746 |
| LMArena Vision Elo score | 1325 | 1319 |
FAQ
Is Claude Fable 5 or Claude Fable 5.1 cheaper?
Claude Fable 5 and Claude Fable 5.1 have comparable output pricing.
Which has the larger context window, Claude Fable 5 or Claude Fable 5.1?
Both models offer a similar context window.
Pricing is indicative — confirm with the provider before production use. Highlighted values indicate the better figure for that row.