Fireworks AI Releases Ember-1: About 40% Fewer Tokens Than Kimi K3
Fireworks AI has released Ember-1, a model from Fireworks Research built by post-training Moonshot AI's open-weight Kimi K3 to produce shorter reasoning traces while keeping task accuracy. Fireworks reports about 40% fewer tokens across its own evaluations, with Kimi K3's reasoning shortened by 35% to 50% without sacrificing accuracy across seven benchmarks and two customers' production traffic. In one published production A/B run, reasoning tokens dropped 71.3% and total tokens dropped 39% at essentially unchanged task scores.
Why it matters
Fireworks AI has released Ember-1, a model from Fireworks Research built by post-training Moonshot AI's open-weight Kimi K3 to produce shorter reasoning traces while keeping task accuracy. Fireworks reports about 40% fewer tokens across its own evaluations, with Kimi K3's reasoning shortened by 35% to 50% without sacrificing accuracy across seven benchmarks and two customers' production traffic. In one published production A/B run, reasoning tokens dropped 71.3% and total tokens dropped 39% at essentially unchanged task scores.