Kimi K3 Fast

kimi-k3-fast by Moonshot AI Released August 21, 2026
ReasoningFunction callingStructured outputPrompt cachingWeb searchComputer useImage inputFile inputAudio inputVideo inputEU hostingFree endpointUp to % off
Input from
$4.5 / 1M
Output from
$22.5 / 1M
Cached input from
$0.45 / 1M
Context window
1.05M
Endpoints
1
from 1 providers
Regions
United States

About Kimi K3 Fast

Kimi K3 Fast is a chat model by Moonshot AI, available on Eden AI through 1 endpoint from 1 provider, from $4.5 per million input tokens and $22.5 per million output tokens, with a context window of up to 1.05M tokens.

Providers and prices

1 endpoints from 1 providers, cheapest first, in USD per million tokens. Every one is called with the same Eden AI key: pin one with its endpoint ID, or let Eden AI route for you. .

Endpoint
Region
Context
Input / 1M
Output / 1M
Cached / 1M
Supports
Fireworks AI (United States)Official−%fireworks_ai/accounts/fireworks/routers/kimi-k3-fast
United States
1.05M
$4.5$4.5
$22.5
$0.45
ReasoningToolsJSONCacheVisionWeb

Performance

Measured on real Eden AI traffic over the last 30 days. Endpoints with too little traffic are not shown.

Fastest first token
1.24 s
Fireworks AI (United States)
Lowest latency
3.34 s
Fireworks AI (United States)
Highest throughput
43.44 tok/s
Fireworks AI (United States)
Best availability
99.98%
Fireworks AI (United States)
Endpoint
First token
Latency p50
Latency p95
Throughput
Availability
Cache hits
Tool errors
JSON errors
Fireworks AI (United States)
1.24 s
3.34 s
17.24 s
43.44 tok/s
99.98%
91.85%
1.46%
11.54%

Estimate your monthly cost

Enter your expected volume to compare every endpoint at once.

Call Kimi K3 Fast with Eden AI

Use the model ID to let Eden AI pick an endpoint, or an endpoint ID from the table above to pin one.

import requests

response = requests.post(
    "https://api.edenai.run/v3/chat/completions",
    headers={"Authorization": "Bearer YOUR_EDENAI_API_KEY"},
    json={
        "model": "",
        "messages": [{"role": "user", "content": "Hello!"}],
    },
)
print(response.json())

Questions about Kimi K3 Fast

On Eden AI, prices for this model start at $4.5 per million input tokens and $22.5 per million output tokens. Prices differ by endpoint; the providers table lists each one. .

Up to 1.05M tokens, depending on the endpoint.

1 endpoints from 1 providers, available in: United States. All of them are called with the same Eden AI API key.

Yes. At least one endpoint is hosted in Europe; pin it with its endpoint ID from the providers table to keep requests in the EU.

Over the last 30 days, the fastest first token was 1.24 s (Fireworks AI (United States)) and the highest throughput was 43.44 tokens per second (Fireworks AI (United States)).