Llama 3.1 405B vs Llama 3.1 8B

Compare Meta (via Together AI) and Meta (via Together AI) AI models

Meta (via Together AI)

Llama 3.1 405B

Meta (via Together AI)

Llama 3.1 8B

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Cost Comparison (1000 input + 500 output tokens, 100 requests/day)

Llama 3.1 405B

Per Request:$0.005250

Daily:$0.525

Monthly:$15.75

Yearly:$191.625

Llama 3.1 8B

Per Request:$0.000270

Daily:$0.027

Monthly:$0.81

Yearly:$9.855

Cost Differences

$0.004980

Per Request

$0.498

Daily

$14.94

Monthly

$181.77

Yearly

Llama 3.1 8B costs less than Llama 3.1 405B

Feature Comparison

Feature	Llama 3.1 405B	Llama 3.1 8B
Provider	Meta (via Together AI)	Meta (via Together AI)
Input Price	$3.50/1M tokens	$0.18/1M tokens
Output Price	$3.50/1M tokens	$0.18/1M tokens
Context Window	128,000 tokens	128,000 tokens
Max Output	32,768 tokens	32,768 tokens
Category	flagship	efficient
Capabilities	textcodereasoning	textcode
Release Date	7/23/2024	7/23/2024

Llama 3.1 405B vs Llama 3.1 8B: Which Should You Choose?

Choosing between Llama 3.1 405B and Llama 3.1 8B depends on your priorities: cost efficiency, context length, or raw capability. Llama 3.1 8B is the more affordable option at $0.18/1M input tokens — 95% cheaper than Llama 3.1 405B.

These models target different tiers: Llama 3.1 405B is a flagship model while Llama 3.1 8B is efficient. This means they're optimized for different workloads. Llama 3.1 405B is built for complex tasks that require deeper reasoning, while Llama 3.1 8B offers better value for routine operations.

Output costs matter too. Llama 3.1 405B charges $3.50/1M output tokens vs $0.18 for Llama 3.1 8B. For generation-heavy workloads (content creation, code generation, summarization), output pricing often dominates your bill. Llama 3.1 8B has the edge here at $0.18/1M output tokens.

Best Use Cases

Choose Llama 3.1 405B when:

• You need more capabilities (reasoning)
• You're already using Meta (via Together AI)'s API ecosystem

Choose Llama 3.1 8B when:

• Budget is a primary concern
• You're already using Meta (via Together AI)'s API ecosystem
• You're running high-volume, latency-sensitive workloads

Try Different Scenarios

Use the calculator below to see how costs change with different usage patterns

Llama 3.1 405B (Meta (via Together AI))

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Llama 3.1 8B (Meta (via Together AI))

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Frequently Asked Questions

Which is cheaper, Llama 3.1 405B or Llama 3.1 8B?▼

Llama 3.1 8B is cheaper for input tokens at $0.18 per million tokens vs $3.50 for Llama 3.1 405B — that's 95% savings on input costs.

What is the context window difference between Llama 3.1 405B and Llama 3.1 8B?▼

Llama 3.1 405B supports 128,000 tokens while Llama 3.1 8B supports 128,000 tokens — a difference of 0 tokens in favor of Llama 3.1 405B.

Which model is better for AI Chatbot?▼

Both models support text. For ai chatbot, Llama 3.1 8B is the lower-cost option, while Llama 3.1 405B offers a larger context window (128,000 vs 128,000 tokens). Choose Llama 3.1 8B for budget sensitivity or Llama 3.1 405B for longer context tasks.

Which model has better overall pricing for heavy usage?▼

At 100 requests/day with 1,000 input and 500 output tokens each, Llama 3.1 405B costs about $15.75/month and Llama 3.1 8B costs about $0.81/month. Overall, Llama 3.1 8B has lower combined input + output rates ($0.18 in, $0.18 out) vs Llama 3.1 405B.