Is claude-opus-4-1-20250805 or gpt-5.1-codex cheaper?

gpt-5.1-codex is cheaper on output tokens ($9.00 vs $67.50 per 1M).

Which has the larger context window, claude-opus-4-1-20250805 or gpt-5.1-codex?

gpt-5.1-codex has the larger context window (400K tokens).

claude-opus-4-1-20250805 vs gpt-5.1-codex

gpt-5.1-codex is cheaper on output tokens, while gpt-5.1-codex offers a larger context window. Choose claude-opus-4-1-20250805 or gpt-5.1-codex based on the trade-off between cost, context, and the benchmarks that matter for your use case.

Spec	claude-opus-4-1-20250805	gpt-5.1-codex
Provider	Jiekou.AI	Jiekou.AI
Input / 1M tokens	$13.50	$1.13
Output / 1M tokens	$67.50	$9.00
Context window	200K	400K
Parameters	—	—
Open weights	No	No
Released	Jan 2026	Jan 2026

claude-opus-4-1-20250805 details →gpt-5.1-codex details →

FAQ

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