# Ember-1 (slim)

> Ember-1, a family of models by Fireworks, listed from OpenRouter. Indexed, not reviewed: facts and our own checks, no score or ranking. Ember-1 is a specialized reasoning model from Fireworks Research, built on Kimi K3. It is designed…

- Full: https://www.anchorterminal.com/tools/ember-1.md (~500 tokens) · this version ~430 tokens · JSON https://www.anchorterminal.com/tools/ember-1.json · canonical https://www.anchorterminal.com/tools/ember-1
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · Updated: 2026-10-05

# Ember-1

> Indexed, not reviewed: facts from OpenRouter and our own checks. No score, grade or rank, and not in the rankings until the panel reviews it. How the index works: https://www.anchorterminal.com/indexed/

- Kind: model family, by Fireworks
- Category: Model APIs & inference (https://www.anchorterminal.com/categories/inference.md)
- Listed because: OpenRouter lists it, with prices from the providers that serve it.
- What OpenRouter says: Ember-1 is a specialized reasoning model from Fireworks Research, built on \[Kimi K3\](https://openrouter.ai/moonshotai/kimi-k3). It is designed to make every token go further: it produces shorter reasoning traces, using roughly 40%...

## Models (1)

| Model | OpenRouter id | Released | Context | Input $/1M | Output $/1M | Supports |
| --- | --- | --- | --- | --- | --- | --- |
| Ember-1 | `fireworks/ember-1` | 2026-09 | 1.05M | $3 | $15 | tools, structured output, reasoning, caching, image |

Prices and limits as OpenRouter lists them; a provider's own price can differ.

- JSON: https://www.anchorterminal.com/api/v1/tools/ember-1.json
- Being indexed says nothing about quality, and nobody can pay for it. Ask for a review: https://www.anchorterminal.com/builders/#claiming