Is GPT-6 Astra (Official API) or Claude Opus 5 cheaper?

Claude Opus 5 is cheaper on output tokens ($25.00 vs $62.50 per 1M).

Which has the larger context window, GPT-6 Astra (Official API) or Claude Opus 5?

Claude Opus 5 has the larger context window (1M tokens).

GPT-6 Astra (Official API) vs Claude Opus 5

Claude Opus 5 is cheaper on output tokens, while Claude Opus 5 offers a larger context window. Choose GPT-6 Astra (Official API) or Claude Opus 5 based on the trade-off between cost, context, and the benchmarks that matter for your use case.

Spec	GPT-6 Astra (Official API)	Claude Opus 5
Provider	Infer by Flow7	Abacus
Input / 1M tokens	$12.50	$5.00
Output / 1M tokens	$62.50	$25.00
Context window	272K	1M
Parameters	—	—
Open weights	No	No
Released	Sep 2026	Jul 2026

GPT-6 Astra (Official API) details →Claude Opus 5 details →

FAQ

Pricing is indicative — confirm with the provider before production use. Highlighted values indicate the better figure for that row.