Fireworks: ember-1

Ember-1 is Fireworks' research-preview reasoning model built on Kimi K3 for coding and agentic workflows. It supports tool use and a million-token context. Availability is tied to the provider's preview program, so applications should retain another model for continuity.

Compare models

ember-1

AvailableFireworksChatPreview

Context: 1M
Modalities: Chat
Capabilities: Tool useReasoning

Getting started

Create API key
Create a key in Console, then use it with every model on the platform.

Send your first request

Copy the example for your language and run it against the endpoint.

Text to textChat Completions API

POST/v1/chat/completions

curl https://api.tokenlab.sh/v1/chat/completions \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer sk-xxx" \
  -d '{
    "model": "ember-1",
    "messages": [
      {"role": "user", "content": "Hello!"}
    ]
  }'

Pricing

Official price is the model maker's public baseline. TokenLab price is what you pay for this model on TokenLab.

Default spec

Per 1M tokens

Official price: Input $3.00 / Output $15.00 / Cache read $0.30
TokenLab price: -
Discount: -

Prompt cache pricing

Cache read

Official price: $0.30
TokenLab price: —
Discount: —

	Official pricePer 1M tokens	TokenLab pricePer 1M tokens	Discount
Default spec	Input $3.00 / Output $15.00 / Cache read $0.30	-	-

Prompt cache pricing

Cache read

$0.30

—

Usage & activity

Success rate is the share of requests that completed. Latency is how long a full response takes; P95 means 95% of requests finished within that time.

Usage & availability

Last 24 hours

No data yet

Model performance

Last updated Sep 30, 2026, 07:44 PM UTC

Metrics appear once privacy and data volume thresholds are met.

Data is based on aggregate user requests, excluding status checks.

Open in Console

Open Ember-1 in Console with a prompt ready to edit or send.

Help me try ember-1 with a short message at /v1/chat/completions. Show the reply, latency, and cost.

Use cases

Best for

Reasoning

Multi-step reasoning, analysis, and research workflows

Code

Writing, reviewing, and debugging code in real engineering loops

Agents and tools

Handle reasoning, support triage, tool calls, and multi-step tasks.

Coding

Generate, review, or debug code in the tools you already use.

Knowledge assistants

Build chat, search, and retrieval with a clear price and capability profile.

Side-by-side test

Compare response quality, latency, and price side by side.

Prompt examples

Write a concise support reply and list the assumptions behind it.

Review this API design and call out the top three integration risks.

Turn a long changelog into release notes a non-engineer would read.

This model has conditional pricing. Monthly token totals alone cannot produce a reliable estimate; use the detailed pricing for the request specification, cache, and applicable time window.

FAQ

How much does Ember-1 cost?

On TokenLab, Ember-1 costs — Per 1M tokens. The pricing table above shows the full breakdown. Rates depend on the billing unit, specification, and usage. Compare matching conditions in the model's detailed pricing; a single rate does not determine the total cost.

What is Ember-1 best for?

Ember-1 supports Reasoning, Tool use, Code. You can open it directly in Create.

How do I test Ember-1?

Open Ember-1 in Create. A sample for /v1/chat/completions will be ready to try.

Which endpoint should Ember-1 use?

Use https://api.tokenlab.sh/v1/chat/completions for Ember-1. The request example below shows the matching code shape.

Can I test Ember-1 before integrating it?

Yes. Open Console starts a ready draft for Ember-1 and keeps your prompt after sign-in, so you don’t lose context.

Which operations does Ember-1 support?

Ember-1 supports Text to text. Select an operation above to see its endpoint and request example.