Is o4-mini-deep-research or GPT-5.1 cheaper?

o4-mini-deep-research is cheaper on output tokens ($7.20 vs $9.00 per 1M).

Which has the larger context window, o4-mini-deep-research or GPT-5.1?

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

o4-mini-deep-research vs GPT-5.1

o4-mini-deep-research is cheaper on output tokens, while GPT-5.1 offers a larger context window. Choose o4-mini-deep-research or GPT-5.1 based on the trade-off between cost, context, and the benchmarks that matter for your use case.

Spec	o4-mini-deep-research	GPT-5.1
Provider	Poe	Poe
Input / 1M tokens	$1.80	$1.10
Output / 1M tokens	$7.20	$9.00
Context window	200K	400K
Parameters	—	—
Open weights	No	No
Released	Jun 2025	Nov 2025

o4-mini-deep-research details →GPT-5.1 details →

FAQ

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