Claude Fable 5.1 vs GPT-6 Astra
Both have similar output pricing, while GPT-6 Astra offers a larger context window. Choose Claude Fable 5.1 or GPT-6 Astra based on the trade-off between cost, context, and the benchmarks that matter for your use case.
| Spec | Claude Fable 5.1 | GPT-6 Astra |
|---|---|---|
| Provider | Anthropic | OpenAI |
| Input / 1M tokens | $10.00 | $10.00 |
| Output / 1M tokens | $50.00 | $50.00 |
| Context window | 1M | 1.1M |
| Parameters | — | — |
| Open weights | — | — |
| Released | — | — |
| LMArena (Chatbot Arena) Elo score | 1510 | 1442 |
| LMArena WebDev Elo score | 1743 | 1780 |
| LMArena Vision Elo score | 1318 | 1281 |
| Epoch Capabilities Index score | 165 | 166 |
| GPQA Diamond score | — | 95.8 |
FAQ
Is Claude Fable 5.1 or GPT-6 Astra cheaper?
Claude Fable 5.1 and GPT-6 Astra have comparable output pricing.
Which has the larger context window, Claude Fable 5.1 or GPT-6 Astra?
GPT-6 Astra has the larger context window (1.1M tokens).
Pricing is indicative — confirm with the provider before production use. Highlighted values indicate the better figure for that row.