Claude Fable Latest vs Claude Opus 4.5
Claude Opus 4.5 is cheaper on output tokens, while Claude Fable Latest offers a larger context window. Choose Claude Fable Latest or Claude Opus 4.5 based on the trade-off between cost, context, and the benchmarks that matter for your use case.
| Spec | Claude Fable Latest | Claude Opus 4.5 |
|---|---|---|
| Provider | Anthropic | Anthropic |
| Input / 1M tokens | $10.00 | $5.00 |
| Output / 1M tokens | $50.00 | $25.00 |
| Context window | 1M | 200K |
| Parameters | — | — |
| Open weights | — | No |
| Released | — | Nov 2025 |
| LiveBench score | — | 76.0 |
| SWE-bench Multilingual score | — | 70.7 |
| SWE-bench Verified score | — | 79.2 |
| LMArena (Chatbot Arena) Elo score | — | 1451 |
| GPQA Diamond score | — | 86.0 |
| LMArena WebDev Elo score | — | 1494 |
| FrontierMath score | — | 20.7 |
| Epoch Capabilities Index score | — | 150 |
FAQ
Is Claude Fable Latest or Claude Opus 4.5 cheaper?
Claude Opus 4.5 is cheaper on output tokens ($25.00 vs $50.00 per 1M).
Which has the larger context window, Claude Fable Latest or Claude Opus 4.5?
Claude Fable Latest 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.