PriceIndex
FI

Ember-1

ember-1
APIProvider site

Ember-1 is a specialized reasoning model from Fireworks Research, built on [Kimi K3](https://.ai/moonshotai/kimi-k3). It is designed to make every token go further: it produces shorter reasoning traces, using roughly 40%... Built by Fireworks.

Prices updated

Input price

$3.00

per 1M tokens · Standard

Output price

$15

per 1M tokens · Standard

Input limit

1M

tokens

Output limit

944K

tokens

Input formats

TextImageVideoAudioPDF

Output formats

TextImageVideoAudioPDF
Compare

Ember-1 price history

2 price records since 10/8/2026

Ember-1 cost calculator

Input20M tokens
Output5M tokens

$135/month

Standard pricing

    Overview

    What is Ember-1?

    Ember-1 is a text & reasoning and vision model from Fireworks. Ember-1 is a specialized reasoning model from Fireworks Research, built on [Kimi K3](https://.ai/moonshotai/kimi-k3). It is designed to make every token go further: it produces shorter reasoning traces, using roughly 40%... Its 1M context window and $3.00 input price make it a candidate for quality-focused production applications.

    Image understandingDocument analysisContent workflowsClassification

    Rates

    Ember-1 pricing

    Pricing is based on token usage. Provider-specific caching, batch, regional, and tool charges may affect the final cost.

    Input · Standard

    $3.00

    Per 1M tokens

    Cached input · Standard

    $0.30

    Per 1M tokens

    Capabilities

    Ember-1 Tools

    Tools available when using Ember-1 through supported provider APIs.

    Function calling

    Supported

    Structured outputs

    Supported

    JSON mode

    Supported

    Reasoning

    Supported

    Built-in web search

    Not supported

    Log probabilities

    Supported

    Deterministic seed

    Not supported

    Parallel tool calls

    Not supported

    Prompt caching

    Supported

    Strengths and limitations

    Strengths

    • Priced at $3.00 input and $15 output per million tokens.
    • 1M context supports large documents, repositories and extended conversations.
    • Supports text & reasoning and vision workloads in one model.

    Limitations

    • Generated tokens cost 5× more than input tokens, which matters for verbose responses.
    • Large context capacity does not guarantee consistent retrieval across the entire prompt.
    • Arena Elo and MMLU-Pro are directional; test accuracy, latency and reliability on your own workload before committing.

    Arena Elo, MMLU-Pro and pricing figures are illustrative; validate current vendor terms before purchase.

    Frequently asked questions about Ember-1

    Ember-1 is a text & reasoning and vision model from Fireworks. Ember-1 is a specialized reasoning model from Fireworks Research, built on [Kimi K3](https://.ai/moonshotai/kimi-k3). It is designed to make every token go further: it produces shorter reasoning traces, using roughly 40%...