Ember-1

Name: Ember-1
Price: 3 USD
Author: Fireworks AI

Fireworks AI🇺🇸 United States

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Context window1049K tokens

Input / 1M tokens$3

Output / 1M tokens$15

Pricing and context window via OpenRouter, 2026-11-12.

Version History

1majorSeptember 24, 2026

Fireworks Research released Ember-1, a reasoning model built on Kimi K3 that claims roughly 40% fewer reasoning tokens than its base model while maintaining comparable quality on internal evaluations.

Benchmark Scores

Full leaderboard →

Benchmark	Score	Rank	Source
SWE-bench Verified	92.2%	6 of 80	llm-stats, Oct 2026 ↗

Rank is against every model in our database with a sourced score on that benchmark, each counted once with its best score.

Coverage

model release

Fireworks Releases Ember-1, a Reasoning Model That Cuts Token Usage 40% Versus Its Kimi K3 Base

Fireworks Research has released Ember-1, a reasoning model built on Kimi K3 that produces shorter reasoning traces while claiming comparable output quality. The model offers a 1 million token context window at $3 per 1M input tokens and $15 per 1M output tokens.

September 24, 2026 · 5:50 AM2 min read

Fireworks AI Ember-1 Kimi K3