Is Muse Spark 1.3 Free or GPT-5.4 cheaper?

Muse Spark 1.3 Free is cheaper on output tokens ($0.00 vs $15.00 per 1M).

Which has the larger context window, Muse Spark 1.3 Free or GPT-5.4?

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

Muse Spark 1.3 Free vs GPT-5.4

Muse Spark 1.3 Free is cheaper on output tokens, while GPT-5.4 offers a larger context window. Choose Muse Spark 1.3 Free or GPT-5.4 based on the trade-off between cost, context, and the benchmarks that matter for your use case.

Spec	Muse Spark 1.3 Free	GPT-5.4
Provider	OpenCode	OpenCode
Input / 1M tokens	$0.00	$2.50
Output / 1M tokens	$0.00	$15.00
Context window	1M	1.1M
Parameters	—	—
Open weights	No	No
Released	Sep 2026	Mar 2026

Muse Spark 1.3 Free 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.