llama-3.1-8b-instruct-fast

Text Generation • Meta • Hosted

[Fast version] The Meta Llama 3.1 collection of multilingual large language models (LLMs) is a collection of pretrained and instruction tuned generative models. The Llama 3.1 instruction tuned text only models are optimized for multilingual dialogue use cases and outperform many of the available open source and closed chat models on common industry benchmarks.

Model Info
Context Window ↗	128,000 tokens
Terms and License	link ↗

Playground

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Usage

export interface Env {
  AI: Ai;
}

export default {
  async fetch(request, env): Promise<Response> {

    const messages = [
      { role: "system", content: "You are a friendly assistant" },
      {
        role: "user",
        content: "What is the origin of the phrase Hello, World",
      },
    ];

    const stream = await env.AI.run("@cf/meta/llama-3.1-8b-instruct-fast", {
      messages,
      stream: true,
    });

    return new Response(stream, {
      headers: { "content-type": "text/event-stream" },
    });
  },
} satisfies ExportedHandler<Env>;

export interface Env {
  AI: Ai;
}

export default {
  async fetch(request, env): Promise<Response> {

    const messages = [
      { role: "system", content: "You are a friendly assistant" },
      {
        role: "user",
        content: "What is the origin of the phrase Hello, World",
      },
    ];
    const response = await env.AI.run("@cf/meta/llama-3.1-8b-instruct-fast", { messages });

    return Response.json(response);
  },
} satisfies ExportedHandler<Env>;

import os
import requests

ACCOUNT_ID = "your-account-id"
AUTH_TOKEN = os.environ.get("CLOUDFLARE_AUTH_TOKEN")

prompt = "Tell me all about PEP-8"
response = requests.post(
  f"https://api.cloudflare.com/client/v4/accounts/{ACCOUNT_ID}/ai/run/@cf/meta/llama-3.1-8b-instruct-fast",
    headers={"Authorization": f"Bearer {AUTH_TOKEN}"},
    json={
      "messages": [
        {"role": "system", "content": "You are a friendly assistant"},
        {"role": "user", "content": prompt}
      ]
    }
)
result = response.json()
print(result)

curl https://api.cloudflare.com/client/v4/accounts/$CLOUDFLARE_ACCOUNT_ID/ai/run/@cf/meta/llama-3.1-8b-instruct-fast \
  -X POST \
  -H "Authorization: Bearer $CLOUDFLARE_AUTH_TOKEN" \
  -d '{ "messages": [{ "role": "system", "content": "You are a friendly assistant" }, { "role": "user", "content": "Why is pizza so good" }]}'

Parameters

Input

frequency_penalty

numbermaximum: 2minimum: 0Decreases the likelihood of the model repeating the same lines verbatim.

▶image

one of

lora

stringName of the LoRA (Low-Rank Adaptation) model to fine-tune the base model.

max_tokens

integerdefault: 256The maximum number of tokens to generate in the response.

presence_penalty

numbermaximum: 2minimum: 0Increases the likelihood of the model introducing new topics.

prompt

stringrequiredmaxLength: 131072minLength: 1The input text prompt for the model to generate a response.

raw

booleandefault: falseIf true, a chat template is not applied and you must adhere to the specific model's expected formatting.

repetition_penalty

numbermaximum: 2minimum: 0Penalty for repeated tokens; higher values discourage repetition.

seed

integermaximum: 9999999999minimum: 1Random seed for reproducibility of the generation.

stream

booleandefault: falseIf true, the response will be streamed back incrementally using SSE, Server Sent Events.

temperature

numberdefault: 0.6maximum: 5minimum: 0Controls the randomness of the output; higher values produce more random results.

top_k

integermaximum: 50minimum: 1Limits the AI to choose from the top 'k' most probable words. Lower values make responses more focused; higher values introduce more variety and potential surprises.

top_p

numbermaximum: 2minimum: 0Adjusts the creativity of the AI's responses by controlling how many possible words it considers. Lower values make outputs more predictable; higher values allow for more varied and creative responses.

Output

Synchronous — Send a request and receive a complete response

response

stringThe generated text response from the model

▶tool_calls[]

arrayAn array of tool calls requests made during the response generation

Streaming — Send a request with `stream: true` and receive server-sent events

contentType

text/event-stream

format

binary

type

string

API Schemas (Raw)

Synchronous Input

Synchronous Output

Streaming Input

Streaming Output