Llama 3.1 8B Instruct
Meta Llama 3.1 8B Instruct — pricing, 16k context window, API cost calculator and alternatives.
By Meta
Specs
- Provider
- Meta
- Slug
- meta-llama/llama-3-1-8b-instruct
- Capabilities
- tools, json_mode
Pricing freshness
- Tier
- standard
- Currency
- USD
- As of
- 2026-05-08 17:08 UTC
Pricing history
Tracking Llama 3.1 8B Instruct pricing since 2026-05-08. We'll plot the chart here once it changes.
Quickstart — call Llama 3.1 8B Instruct from your app
curl https://openrouter.ai/api/v1/chat/completions \
-H "Content-Type: application/json" \
-H "Authorization: Bearer $OPENROUTER_API_KEY" \
-d '{
"model": "meta-llama/llama-3-1-8b-instruct",
"messages": [{"role": "user", "content": "Hello!"}]
}'Official docs: https://openrouter.ai/docs
# pip install openai
from openai import OpenAI
client = OpenAI(
base_url="https://openrouter.ai/api/v1",
api_key=os.environ["OPENROUTER_API_KEY"],
)
resp = client.chat.completions.create(
model="meta-llama/llama-3-1-8b-instruct",
messages=[{"role": "user", "content": "Hello!"}],
)
print(resp.choices[0].message.content)Official docs: https://openrouter.ai/docs
// npm install openai
import OpenAI from "openai";
const client = new OpenAI({
baseURL: "https://openrouter.ai/api/v1",
apiKey: process.env.OPENROUTER_API_KEY,
});
const resp = await client.chat.completions.create({
model: "meta-llama/llama-3-1-8b-instruct",
messages: [{ role: "user", content: "Hello!" }],
});
console.log(resp.choices[0].message.content);Official docs: https://openrouter.ai/docs
Related models
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Frequently asked questions
What is Llama 3.1 8B Instruct?
Llama 3.1 8B Instruct is a large language model API from Meta with a 16k-token context window. It costs $0.02 per 1M input tokens and $0.05 per 1M output tokens.
How much does Llama 3.1 8B Instruct cost?
Llama 3.1 8B Instruct is priced at $0.02 per 1M input tokens and $0.05 per 1M output tokens via the Meta API. A 50/50 input/output workload of 1M total tokens costs about $0.035.
What is the context window of Llama 3.1 8B Instruct?
Llama 3.1 8B Instruct supports up to 16k tokens of context per request — roughly 33 pages of English text or 2048 lines of code at a typical density.
Does Llama 3.1 8B Instruct support vision, tool use, or JSON mode?
Llama 3.1 8B Instruct supports tool/function calling and structured JSON mode. It does not support image input (vision).
Who makes Llama 3.1 8B Instruct?
Llama 3.1 8B Instruct is built and operated by Meta. Pricing, context window, and capabilities on this page are refreshed nightly from Meta's public catalog.
Can I self-host Llama 3.1 8B Instruct?
Llama 3.1 8B Instruct has open weights — you can run it on your own GPUs. License: Llama 3.1 Community License. Compare self-hosting cost vs. the API at /self-hosted/llama-3-1-8b-instruct.