Is GPT-5.4 mini or Claude Fable 5 cheaper?

GPT-5.4 mini is cheaper on output tokens ($4.50 vs $50.00 per 1M).

Which has the larger context window, GPT-5.4 mini or Claude Fable 5?

Claude Fable 5 has the larger context window (1M tokens).

GPT-5.4 mini vs Claude Fable 5

GPT-5.4 mini is cheaper on output tokens, while Claude Fable 5 offers a larger context window. Choose GPT-5.4 mini or Claude Fable 5 based on the trade-off between cost, context, and the benchmarks that matter for your use case.

Spec	GPT-5.4 mini	Claude Fable 5
Provider	FreeModel	FreeModel
Input / 1M tokens	$0.75	$10.00
Output / 1M tokens	$4.50	$50.00
Context window	400K	1M
Parameters	—	—
Open weights	No	No
Released	Mar 2026	Jun 2026

GPT-5.4 mini details →Claude Fable 5 details →

FAQ

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