fireworks

Ember-1

Input / 1M: $3.15
Output / 1M: $15.75
Context: 1,048,576 tokens
Catalog: Gateway catalog

About this model

Ember-1 is Fireworks’ research-preview reasoning model built on Kimi K3 for coding and agentic workflows. It supports image input, function calling, and a 1M-token context window. Fireworks reports approximately 40% fewer generated tokens while maintaining comparable quality across its evaluations, helping reduce the cost of workloads with extensive reasoning.

text inputimage inputtext outputlanguage

Use with MiniRouter View docs

Use an endpoint supported by this model.

Get a key for this setup →

1const response = await fetch('https://api.minirouter.sh/v1/chat/completions', {2  method: 'POST',3  headers: {4    Authorization: `Bearer ${process.env.MINIROUTER_KEY}`,5    'Content-Type': 'application/json',6  },7  body: JSON.stringify({8    model: 'fireworks/ember-1',9    messages: [{ role: 'user', content: 'Why is the sky blue?' }],10    max_tokens: 1024,11  }),12})13 14const data = await response.json()15console.log(data.choices[0].message.content)

Read docs →

Overview

Model type: language
Context window: 1,048,576
Maximum output: 1,048,576
Input / 1M tokens: $3.15
Output / 1M tokens: $15.75
Released: 2026-09-23

Prices include the MiniRouter fee. Compatibility snapshot: 2026-08-06. Input: text, image. Output: text.

Endpoints

/v1/chat/completions/v1/messages/v1/responses

Platform-funded routing only. Caller BYOK credentials and OIDC-based upstream authentication are intentionally excluded; authenticate with a MiniRouter bearer key.

Captured parameters: max_tokens, temperature, stop, tools, tool_choice, reasoning, include_reasoning, response_format, structured_outputs.

Structured output: JSON Schema and JSON mode enforced on verified providers. How it works

API

Use the setup panel above to switch between Chat Completions, Messages, and client configurations. Every snippet keeps the model ID unchanged.

Base URLhttps://api.minirouter.sh/v1

Model IDfireworks/ember-1

Providers

MiniRouter selects from the configured routes below. Priority is the catalog order, not a latency or availability score.

Provider	Priority	Input / 1M	Output / 1M	Parameters	Access
vercel	1	$3.15	$15.75	max_tokens, temperature, stop, tools, tool_choice, reasoning, include_reasoning, response_format, structured_outputs	MiniRouter balance