Ember-1 vs GLM 5.3 Prime
GLM 5.3 Prime is 1.4× cheaper than Ember-1 on a blended basis. Ember-1 has the larger context window at 1.0M tokens.
Side by side
Green marks the better value in each row where a comparison is meaningful.
| Attribute | Ember-1 | GLM 5.3 Prime |
|---|---|---|
| Provider | Fireworks | Z.ai |
| Input / 1M tokens | $3.00 | $2.80 |
| Output / 1M tokens | $15.00 | $8.80 |
| Blended / 1M tokens | $6.00 | $4.30 |
| Cached input / 1M | $0.300 | $0.560 |
| Context window | 1.0M | 1M |
| Max output | 944K | 131K |
| Input modalities | text, image | text |
| Reasoning | Yes | Yes |
| Tool calling | Yes | Yes |
| Structured output | Yes | Yes |
| Prompt caching | Yes | Yes |
| Open weights | No | No |
| Knowledge cutoff | - | - |
| Released | September 24, 2026 | September 23, 2026 |
Frequently asked
Is Ember-1 or GLM 5.3 Prime cheaper?
GLM 5.3 Prime is 1.4× cheaper than Ember-1 on a blended basis.
What is the price difference between Ember-1 and GLM 5.3 Prime?
Ember-1 costs $3.00 per million input tokens and $15.00 per million output tokens. GLM 5.3 Prime costs $2.80 and $8.80 respectively.
Which has the larger context window, Ember-1 or GLM 5.3 Prime?
Ember-1, at 1.0M tokens versus 1M.