Is FLUX.2 Klein 4B or GPT-5.4 cheaper?

FLUX.2 Klein 4B is cheaper on output tokens ($1.00 vs $15.00 per 1M).

Which has the larger context window, FLUX.2 Klein 4B or GPT-5.4?

GPT-5.4 has the larger context window (1.1M tokens).

FLUX.2 Klein 4B vs GPT-5.4

FLUX.2 Klein 4B is cheaper on output tokens, while GPT-5.4 offers a larger context window. Choose FLUX.2 Klein 4B or GPT-5.4 based on the trade-off between cost, context, and the benchmarks that matter for your use case.

Spec	FLUX.2 Klein 4B	GPT-5.4
Provider	NEAR AI Cloud	NEAR AI Cloud
Input / 1M tokens	$1.00	$2.50
Output / 1M tokens	$1.00	$15.00
Context window	128K	1.1M
Parameters	—	—
Open weights	Yes	No
Released	Jan 2026	Mar 2026

FLUX.2 Klein 4B details →GPT-5.4 details →

FAQ

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