Is GPT-5.1-Codex or Claude-Opus-4.7 cheaper?

GPT-5.1-Codex is cheaper on output tokens ($9.00 vs $21.00 per 1M).

Which has the larger context window, GPT-5.1-Codex or Claude-Opus-4.7?

Claude-Opus-4.7 has the larger context window (1M tokens).

GPT-5.1-Codex vs Claude-Opus-4.7

GPT-5.1-Codex is cheaper on output tokens, while Claude-Opus-4.7 offers a larger context window. Choose GPT-5.1-Codex or Claude-Opus-4.7 based on the trade-off between cost, context, and the benchmarks that matter for your use case.

Spec	GPT-5.1-Codex	Claude-Opus-4.7
Provider	Poe	Poe
Input / 1M tokens	$1.10	$4.30
Output / 1M tokens	$9.00	$21.00
Context window	400K	1M
Parameters	—	—
Open weights	No	No
Released	Nov 2025	Apr 2026

GPT-5.1-Codex details →Claude-Opus-4.7 details →

FAQ

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