Claude Fable 5.1 vs o1
Claude Fable 5.1 is cheaper on output tokens, while Claude Fable 5.1 offers a larger context window. Choose Claude Fable 5.1 or o1 based on the trade-off between cost, context, and the benchmarks that matter for your use case.
| Spec | Claude Fable 5.1 | o1 |
|---|---|---|
| Provider | Anthropic | OpenAI |
| Input / 1M tokens | $10.00 | $15.00 |
| Output / 1M tokens | $50.00 | $60.00 |
| Context window | 1M | 200K |
| Parameters | — | — |
| Open weights | — | No |
| Released | — | Dec 2024 |
| Epoch Capabilities Index score | 166 | 142 |
| LMArena (Chatbot Arena) Elo score | 1514 | 1366 |
| LMArena WebDev Elo score | 1746 | — |
| LMArena Vision Elo score | 1319 | 1168 |
| Aider Polyglot score | — | 61.7 |
| GPQA Diamond score | — | 76.8 |
| FrontierMath score | — | 9.3 |
FAQ
Is Claude Fable 5.1 or o1 cheaper?
Claude Fable 5.1 is cheaper on output tokens ($50.00 vs $60.00 per 1M).
Which has the larger context window, Claude Fable 5.1 or o1?
Claude Fable 5.1 has the larger context window (1M tokens).
Pricing is indicative — confirm with the provider before production use. Highlighted values indicate the better figure for that row.