Index · comparison
GPT-6 Astra (OpenAI) vs Claude Fable 5 (Anthropic)
GPT-6 Astra (OpenAI) and Claude Fable 5 (Anthropic) are priced identically ($60.00 blended per 1M tokens) — the difference is context, speed and quality, compared below.
GPT-6 Astra (OpenAI) on OpenAI vs Claude Fable 5 (Anthropic) on Anthropic — frontier flagships. Every figure below is the value shown on each model's own endpoint page, with its source and verification date.
| Metric | GPT-6 Astra (OpenAI) | Claude Fable 5 (Anthropic) |
|---|---|---|
| Input $/1M | $10 | $10 |
| Output $/1M | $50 | $50 |
| Blended $/1M | $60 | $60 |
| Context window | 1M | 200K |
| Max output | 128K | 64K |
Highlighted cell = better on that row (lower price/latency, higher context/intelligence/throughput). "—" = not measured for that model.
Which to pick
The two are priced identically on a blended basis ($60 per 1M). Price alone rarely settles it: check the intelligence index and latency rows above against your workload, and open each endpoint page for the full price history and provider terms.
Sources: GPT-6 Astra (OpenAI) endpoint · Claude Fable 5 (Anthropic) endpoint · GPT-6 Astra (OpenAI) price verified 2026-09-04 · Claude Fable 5 (Anthropic) price verified 2026-09-05