Moduck

Fireworks: Ember-1

Specialized model from Fireworks built on Kimi K3, producing shorter reasoning traces with approximately 40% fewer tokens while maintaining comparable quality

Model lab
Fireworks
Model family
—
Modalitiestext, image → text
Context window1,048,576
Maximum output131,072
InputUSD 2.4 / 1M tokens
OutputUSD 12 / 1M tokens

Quickstart

Use your Moduck API Key, set the API base URL to https://api.moduck.ai/v1, and set the model parameter to fireworks/ember-1.

import os
import requests

base_url = "https://api.moduck.ai/v1"
api_key = os.environ["MODUCK_API_KEY"]
model_id = "fireworks/ember-1"

response = requests.post(
    f"{base_url}/chat/completions",
    headers={
        "Authorization": f"Bearer {api_key}",
        "Content-Type": "application/json",
    },
    json={
        "model": model_id,
        "messages": [{"role": "user", "content": "Hello!"}],
        "stream": False,
    },
    timeout=60,
)
response.raise_for_status()
print(response.json())

Use the familiar OpenAI-style chat request format to make model integration easier.

Ember-1 API Pricing

TypePrice information
InputUSD 2.4 / 1M tokens
OutputUSD 12 / 1M tokens
Cached inputUSD 0.24 / 1M tokens

Performance

Measured on the Moduck gateway across live traffic, hour by hour over the last 24 hours. Time to first token is how long before anything appears; throughput is how fast the answer is written after that; end-to-end latency is the whole round trip. Figures are medians unless the card says otherwise.

Performance trends

Throughput87.8 tok/sCurrent
Time to first token1.4 sCurrent
End-to-end latency7.1 sCurrent
Throughput
Current87.8 tok/s
Window average90.2 tok/s
Time to first token
Current1.4 s
Window average1.4 s
End-to-end latency
Current7.1 s
Window average7.5 s
Tail latency (P99)
Current15.3 s
Window average16.8 s
Prompt cache hit rate
Current31.1%
Window average23.2%
Error rate
Current0.0%
Window average0.1%

Availability

Uptime is the share of time at least one provider serving this model responded. Availability is stricter: the share of requests actually served. A provider that answers but fails part of the traffic lowers availability without lowering uptime. Both cover the last three days.

Uptime100%At least one provider responded
Availability100%Requests actually served
Error rate0%Share of failed requests
Served requests, hour by hour
24 hours agoNow

Ember-1 Compare models

ModelInput priceOutput priceContext windowCapabilities
Ember-1This pageUSD 2.4 / 1M tokensUSD 12 / 1M tokens1,048,576Text output · Reasoning · Tool calling
DeepSeek V4.1 Flash 1017USD 0.028 / 1M tokens · Quantization fp4USD 0.4 / 1M tokens · Quantization fp41,000,000Text output · Reasoning · Tool calling
Mistral Large 4USD 0.544 / 1M tokensUSD 1.672 / 1M tokens1,048,576Text output · Reasoning · Tool calling
LongCat-2.5-PreviewUSD 0.6 / 1M tokensUSD 2.36 / 1M tokens1,000,000Text output · Reasoning · Tool calling
Viv FastUSD 0.104 / 1M tokensUSD 0.32 / 1M tokens1,000,000Text output · Reasoning · Tool calling

Model specifications

Input
text, image
Output
text
Context window
1,048,576
Maximum output
131,072
Release date
2026-09-22
Attachments
Yes
Reasoning
Yes
Tool calling
Yes
Open weights
No

Frequently asked questions

What is Ember-1 for?

Specialized model from Fireworks built on Kimi K3, producing shorter reasoning traces with approximately 40% fewer tokens while maintaining comparable quality

What inputs and outputs does Ember-1 support?

Recorded inputs: text, images; outputs: text.

How is Ember-1 priced?

The pricing table shows the current recorded Moduck price. For example: Input USD 2.4 / 1M tokens; Output USD 12 / 1M tokens. See the pricing table for all units, variants, and conditions.

What specifications are recorded for Ember-1?

Current model records list Context window 1,048,576 tokens; Maximum output 131,072 tokens.

What model parameter does the Quickstart use?

The example uses fireworks/ember-1. This value comes from the page identifier and is not confirmed as a callable Moduck public ID.

Can I call this model through the Moduck API now?

This page has no verified Moduck API call for this model. A Quickstart example or reserved ID does not establish access; check the models available to your account.