How do I use Ember-1 through YepAPI?

Sign up for a free API key, then send requests to the /v1/ai/chat endpoint.

FireworksText Generation/v1/ai/chatReasoning

Ember-1

Access Ember-1 through one API key. Fireworks Efficient Reasoning on Kimi K3.

Ember-1 is a specialised reasoning model from Fireworks Research, built on Moonshot's Kimi K3. Ember-1 is for reasoning-heavy workloads where the cost is dominated by long thinking traces: it delivers the same answers with markedly fewer tokens.

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2,400+

Developers

1.2M+

API calls served

100+

Endpoints

$0.01

Per call

Yep, that's it.

Try it live

Send a message and see Ember-1 respond in real time.

POST/v1/ai/chatfireworks/ember-1

Message *

Max Tokens

Maximum tokens in the response.

Stream

Real-time tokens

Hit "Send Request" to see the response

Context Window

1.0M tokens

Max Output

944K tokens

Input Price

$4.43 / 1M tokens

Output Price

$22.15 / 1M tokens

Strengths

✓

Shorter reasoning traces

Roughly 40% fewer reasoning tokens than its base for equivalent answers.

✓

Built on Kimi K3

Inherits Moonshot's Kimi K3 capability with a Fireworks efficiency post-train.

✓

1M context, very large output

Handles up to 1,048,576 input tokens and returns up to 943,718 output tokens per call.

✓

Tools and structured output

Function calling and JSON schema outputs.

Quick start

Copy this snippet and start making calls with Ember-1.

const res = await fetch('https://api.yepapi.com/v1/ai/chat', {
  method: 'POST',
  headers: {
    'x-api-key': 'YOUR_API_KEY',
    'Content-Type': 'application/json',
  },
  body: JSON.stringify({
    "model": "fireworks/ember-1",
    "messages": [
      {
        "role": "user",
        "content": "Explain API gateways in 2 sentences."
      }
    ],
    "maxTokens": 256
  }),
});
const { data } = await res.json();
console.log(data.message.content);

Why use Ember-1 through YepAPI?

✓One API key for all models — no separate accounts

✓OpenAI SDK compatible — just change the base URL

✓No monthly minimums — pay per token

✓Switch models with one line of code

✓Full provider passthrough — citations, search results, and all extras included

✓Streaming and non-streaming support on every model

✓Works with Cursor, Claude, LangChain, and any LLM tool

✓Unified billing across all providers

Ember-1 API — pricing, context window & access

Ember-1 is a specialised reasoning model from Fireworks Research, built on Moonshot's Kimi K3. It pairs a 1,048,576-token context window with up to 943,718 output tokens per response, at $4.43 per 1M input and $22.15 per 1M output tokens through YepAPI.

Through YepAPI you call Ember-1 on an OpenAI-compatible endpoint with a single key — the same key that reaches GPT-6, Claude, Gemini, Grok and the SEO, SERP and scraping APIs. Input: text, images.

What is Ember-1?

Ember-1 is a specialised reasoning model from Fireworks Research, built on Moonshot's Kimi K3. It is designed to make every token go further: it produces shorter reasoning traces, using roughly 40% fewer tokens than the base model for the same answers, with text and image input, a 1,048,576-token context window and up to 943,718 output tokens at $4.43 / $22.15 per 1M tokens. It accepts text, images as input, handles up to 1,048,576 tokens of context and returns up to 943,718 output tokens per call.

Build with Ember-1 via YepAPI

YepAPI serves Ember-1 on the OpenAI-compatible /v1/ai/chat endpoint. Point your base URL at YepAPI, add your key, and set the model string to ember-1 (or the full fireworks/ember-1). Function calling, structured outputs and reasoning settings pass straight through, and switching to any other model on the platform is a one-string change per request.

Ember-1 API pricing — $4.43 / 1M input, $22.15 / 1M output

Ember-1 costs $4.43 per 1M input tokens and $22.15 per 1M output tokens through YepAPI, pay per token with no minimums. Failed calls are never charged, and every request is itemised in your dashboard API Logs so you can see exactly what a very long response cost.

Ember-1 use cases

Ember-1 is for reasoning-heavy workloads where the cost is dominated by long thinking traces: it delivers the same answers with markedly fewer tokens.

Try Ember-1 free

Every new YepAPI account includes $5 in free credit with no card required — enough to test Ember-1 on your own prompts before committing to paid usage. Create an account, copy your key, and call ember-1 right away.

Start generating in 30 seconds

$5 free credit on signup. No credit card required. Pay per call.

Get API Key

What developers say

“Switched from SerpAPI and cut our SERP costs by 80%. Same data quality, way simpler billing.”
Marcus T.
SEO Platform Founder

“One API key for AI models, SERP data, and web scraping. Saved us from managing 4 separate providers.”
Priya S.
Full-Stack Developer

“The $5 free credit let us prototype our entire rank tracking feature before committing. No other API does that.”
Jake R.
Indie Hacker

Frequently asked questions

Input tokens cost $4.43 per 1M tokens and output tokens cost $22.15 per 1M tokens through YepAPI. No monthly minimums — you only pay for what you use.

Ember-1 supports a 1.0M token context window with up to 944K output tokens per request.