AI Battle > Rankings > GPT-6 Astra vs Claude Fable 5.1
Head-to-head from public datasets. The better value in each row is highlighted; direction is stated per metric — for costs lower is better, for capability and speed higher is better. Pair sourced from the AA-Omniscience Index: Token Usage ranking.
| Metric | GPT-6 Astra | Claude Fable 5.1 |
|---|---|---|
| Creator | OpenAI | Anthropic |
| Intelligence index | 49.7 | 51.2 |
| Context window (tokens) | — | — |
| Input price / 1M tokens | $10 | $10 |
| Output price / 1M tokens | $50 | $50 |
| Output speed (tok/s) | — | — |
| Time to first token (s) | — | — |
Pair sourced from the AA-Omniscience Index: Token Usage ranking; leader and runner-up there.
This static page is a snapshot rebuilt daily. The interactive comparison of GPT-6 Astra and Claude Fable 5.1 loads the same numbers from the live API.
Values come from public benchmark datasets and provider list prices; see the methodology for sources, limitations and corrections. Prices are list prices — verify on the provider's pricing page before spending money.