Is Claude-Opus-4.6 or GPT-5.1-Codex-Max cheaper?

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

Which has the larger context window, Claude-Opus-4.6 or GPT-5.1-Codex-Max?

Claude-Opus-4.6 has the larger context window (983K tokens).

Claude-Opus-4.6 vs GPT-5.1-Codex-Max

GPT-5.1-Codex-Max is cheaper on output tokens, while Claude-Opus-4.6 offers a larger context window. Choose Claude-Opus-4.6 or GPT-5.1-Codex-Max based on the trade-off between cost, context, and the benchmarks that matter for your use case.

Spec	Claude-Opus-4.6	GPT-5.1-Codex-Max
Provider	Poe	Poe
Input / 1M tokens	$4.30	$1.10
Output / 1M tokens	$21.00	$9.00
Context window	983K	400K
Parameters	—	—
Open weights	No	No
Released	Feb 2026	Dec 2025

Claude-Opus-4.6 details →GPT-5.1-Codex-Max details →

FAQ

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