FastGPT ​

FastGPT is a Kagi service using powerful LLMs to answer user queries running a full search engine underneath. Think ChatGPT, but on steroids and faster! You can try the web app here.

Quick start ​

1. Get the API key (requires a Kagi account)
2. Top off your API credits.
3. Call the API. See example usage.

API key ​

To obtain an API key you will first need to create a Kagi account.

Then, navigate to Settings -> Advanced -> API portal, or click here to go directly.

Click "Generate API Token".

API Credits ​

The FastGPT API uses pre-paid API credits. You can manage API credits in the API billing page of your Kagi settings.

Using API with insufficient credits will produce "Insufficient credit to perform this request." response message.

Pricing ​

Pricing for FastGPT is a flat rate per-query:

• 1.5¢ per query ($15 USD per 1000 queries) when web_search is enabled.
• (Out of service) 0.15¢ per query ($1.5 USD per 1000 queries) when web_search is disabled.

Cached responses, as with all other Kagi APIs, are free.

NOTE: Currently, the web_search parameter is out of service, and may be removed. Trying to pass any value other than true will result in error.

Support ​

You can reach out through support@kagi.com, our Discord server or KagiFeedback.org.

Endpoints ​

Answer Query ​

POST /fastgpt ​

Answer a query.

Returns a FastGPT Answer.

Parameters ​

NOTE: Currently, the web_search parameter is out of service, and may be removed. Trying to pass any value other than true will result in error.

Examples ​

POST request with web search

curl -v \
  -H "Authorization: Bot $TOKEN" \
  -H "Content-Type: application/json" \
  --data '{"query": "Python 3.11"}' \
  https://kagi.com/api/v0/fastgpt

Alternatively in python:

import requests

base_url = 'https://kagi.com/api/v0/fastgpt'
data = {
    "query": "python 3.11",
}
headers = {'Authorization': f'Bot {TOKEN}'}

response = requests.post(base_url, headers=headers, json=data)
print(response.json())

{
  "meta": {
    "id": "120145af-f057-466d-9e6d-7829ac902adc",
    "node": "us-east",
    "ms": 7943
  },
  "data": {
    "output": "Python 3.11 was released in 2021 and introduced several new features compared to previous versions:
    - Faster performance: The interpreter was optimized, resulting in up to 1.25x speedup on benchmarks.[1]
    - New syntax features: Exception groups were added using PEP 654.[1]    
    - Traceback annotation: The new version includes a feature to annotate tracebacks to make them more intelligible.[2]
    - Type hint improvements: Type hints were made more powerful.[3]",
    "tokens": 757,
    "references": [
      {"title": "What's New In Python 3.11 — Python 3.11.3 documentation", "snippet": "...", "url": "https://docs.python.org/3/whatsnew/3.11.html"}, 
      {"title": "Introducing the New Features in Python 3.11 -", "snippet": "...", "url": "https://earthly.dev/blog/python-3.11-new-features/"}
    ]
  }
}

Objects ​

FastGPT Answer ​

Reference object ​