Ember-1
Fireworks🇺🇸
fireworks/ember-1Ember-1 is Fireworks Research's reasoning model built on Moonshot AI's Kimi K3, retrained (not a new base model) to produce reasoning traces roughly 40% shorter while keeping K3-level quality, with text and image input and a 1M-token context window. Released September 23, 2026 as a research preview, it targets coding, knowledge work, and multi-turn agent workflows where reasoning tokens drive most of the cost and latency.
Cost rate
3x
Context
1M
Released
Sep 24, 2026
Input
TextImage
Output
Text
Support
ReasoningTool callingStructured outputs