Is GLM 5.3 Fast or Ember-1 cheaper?

GLM 5.3 Fast is cheaper on output tokens ($6.60 vs $15.00 per 1M).

Which has the larger context window, GLM 5.3 Fast or Ember-1?

Ember-1 has the larger context window (1M tokens).

GLM 5.3 Fast vs Ember-1

GLM 5.3 Fast is cheaper on output tokens, while Ember-1 offers a larger context window. Choose GLM 5.3 Fast or Ember-1 based on the trade-off between cost, context, and the benchmarks that matter for your use case.

Spec	GLM 5.3 Fast	Ember-1
Provider	Fireworks AI	Fireworks AI
Input / 1M tokens	$2.10	$3.00
Output / 1M tokens	$6.60	$15.00
Context window	1M	1M
Parameters	—	—
Open weights	Yes	No
Released	Aug 2026	Sep 2026

GLM 5.3 Fast details →Ember-1 details →

FAQ

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