Skip to main content
🏆 FlagshipBudget-Friendly

Llama 3.1 405B

by Meta (via Together AI)

Largest open-source model rivaling proprietary alternatives

Try Meta (via Together AI) →

Input Price

$3.5

per 1M tokens

Output Price

$3.5

per 1M tokens

Context Window

128K

tokens (32.768K max output)

Specifications

Release Date2024-07-23
Category🏆 Flagship
Context Window128,000 tokens
Max Output32,768 tokens
ProviderMeta (via Together AI)
Input Cost$3.5 / 1M tokens
Output Cost$3.5 / 1M tokens
Price TierBudget-Friendly

Capabilities

textcodereasoning

Related Use Cases

🤖

AI Agent / Agentic Workflows

Calculate the cost of running AI agents that use tools, make decisions, and complete multi-step tasks.

~10,000 in · ~3,000 out
💬

AI Chatbot

Calculate the API cost of running a customer support or conversational AI chatbot.

~2,000 in · ~500 out
📄

Document Summarizer

Calculate how much it costs to summarize documents, reports, and articles with AI.

~8,000 in · ~1,000 out
💻

AI Code Assistant

Calculate the cost of building an AI-powered coding assistant or copilot.

~4,000 in · ~2,000 out
✍️

Content Generation

Calculate the cost of generating blog posts, marketing copy, and articles with AI.

~1,500 in · ~3,000 out
🔍

Data Extraction

Calculate the cost of extracting structured data from unstructured text with AI.

~3,000 in · ~1,500 out

Monthly Cost Estimates

Usage LevelDaily TokensDailyMonthlyYearly
Light~50 requests/day100K in / 20K out$0.42$12.60$153
Medium~200 requests/day500K in / 100K out$2.10$63.00$767
Heavy~1K requests/day2,000K in / 500K out$8.75$262.50$3194
Enterprise~5K requests/day10,000K in / 2,000K out$42.00$1260.00$15330

Cost Calculator

Alternatives to Llama 3.1 405B

💰 Cheaper Options

Claude Haiku 4.5Anthropic
14% cheaper
$1/M in · $5/M out
o1-miniOpenAI
21% cheaper
$1.1/M in · $4.4/M out
o3-miniOpenAI
21% cheaper
$1.1/M in · $4.4/M out
o4-miniOpenAI
21% cheaper
$1.1/M in · $4.4/M out

🚀 More Powerful

Codex MiniOpenAI
7% more
$1.5/M in · $6/M out
Mistral Medium 3.5Mistral AI
29% more
$1.5/M in · $7.5/M out
o4-mini Deep ResearchOpenAI
43% more
$2/M in · $8/M out
GPT-4.1OpenAI
43% more
$2/M in · $8/M out

Frequently Asked Questions

How much does Llama 3.1 405B API cost per million tokens?▼
Llama 3.1 405B costs $3.5 per million input tokens and $3.5 per million output tokens as of 2026. These are the standard API rates from Meta (via Together AI).
What is the Llama 3.1 405B context window?▼
Llama 3.1 405B supports a 128K context window (128,000 tokens), which means you can process up to 128K tokens in a single API call.
How much does Llama 3.1 405B cost per month?▼
At medium usage (~200 requests/day with 500K input and 100K output tokens/day), Llama 3.1 405B costs approximately $63.00/month. Light usage runs about $12.60/month, and heavy usage (~1K requests/day) around $262.50/month.
Is there a cheaper alternative to Llama 3.1 405B?▼
Yes — Claude Haiku 4.5 by Anthropic is a cheaper option at $1/M input tokens vs $3.5/M for Llama 3.1 405B. Other budget alternatives include models in the efficient tier.
Is Llama 3.1 405B good for ai agent / agentic workflows?▼
Llama 3.1 405B is a flagship model with support for text, code, reasoning. For ai agent / agentic workflows, it offers 128K context and costs $3.5/M input tokens — a budget-friendly choice for this use case.

Llama 3.1 405B Comparisons

codex mini latest vs llama 3 1 405bllama 3 1 405b vs o4 mini deep researchllama 3 1 405b vs o3 deep researchgpt 5 2 vs llama 3 1 405bgpt 5 2 pro vs llama 3 1 405bgpt 5 5 vs llama 3 1 405bgpt 5 5 pro vs llama 3 1 405bgpt 5 4 pro vs llama 3 1 405b

Ready to use Llama 3.1 405B?

Get started with Meta (via Together AI)'s API — free tier available for most models.

Try Meta (via Together AI) API →

Related Articles

GPT-5.4 vs Claude Opus 4.6 vs Gemini 3.1 Pro: Complete Cost Comparison 2026

A detailed price and performance breakdown of the three biggest flagship AI models in April 2026 — GPT-5.4, Claude Op...

4/4/2026

Open-Source vs Proprietary AI Models: A Complete Cost Comparison for 2026

Llama 4, DeepSeek, and Mistral are closing the quality gap with GPT-5 and Claude — at a fraction of the price. We bre...

3/24/2026

Llama 4 Maverick: Is Meta's Open Model the Cheapest Option?

Meta's Llama 4 Maverick offers a 1M context window at budget pricing. We analyze costs via Together AI and compare ag...

2/20/2026

← Browse all providers & models