Llama 3.1 405B vs OpenAI Moderation

Compare Llama 3.1 405B and OpenAI Moderation: pricing, performance, context window, latency, and best use cases. Side-by-side comparison on XALEN.

Updated 2026-05-21 · By Abhishek Raj · Our methodology

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Feature Llama 3.1 405B OpenAI Moderation
CategoryOpen SourceSafety
Parameters405B~1B
Context Window128K32K
Input Price$0.08/1M tokensFree/1M tokens
Output Price$0.14/1M tokensN/A/1M tokens
Latency~600ms~50ms

Choose Llama 3.1 405B when:

  • ✓ Premium tasks
  • ✓ Research
  • ✓ Fine-tuning base
Key Strengths:

Largest open model, Highest open-source quality

Choose OpenAI Moderation when:

  • ✓ Content moderation
  • ✓ Input filtering
  • ✓ Safety checks
Key Strengths:

Free, Fast, Reliable categories

Verdict: Llama 3.1 405B vs OpenAI Moderation

For cost efficiency, OpenAI Moderation wins at Free/1M input tokens. For speed, OpenAI Moderation is faster at ~50ms. Llama 3.1 405B excels at Premium tasks while OpenAI Moderation is better for Content moderation. Both are available on XALEN through a single API — try them in the Playground to see which fits your workload.

Detailed Analysis

Pricing Comparison

Llama 3.1 405B costs $0.08/1M input tokens and $0.14/1M output tokens. OpenAI Moderation costs Free input and N/A output. OpenAI Moderation is NaNx cheaper on input tokens. XALEN offers batch processing at 50% discount on both models.

Performance & Context

Llama 3.1 405B has a 128K context window with ~600ms latency. OpenAI Moderation offers 32K context at ~50ms. Llama 3.1 405B has the larger context window.

Best For

Llama 3.1 405B (Open Source) is optimized for: Premium tasks, Research, Fine-tuning base. OpenAI Moderation (Safety) works best for: Content moderation, Input filtering, Safety checks.

Try Both on XALEN

Both models are available through XALEN's OpenAI-compatible API. Switch between them by changing the model parameter:

from xalen import XALEN

client = XALEN(api_key="xln_test_YOUR_KEY")

# Use Llama 3.1 405B
response_a = client.chat.completions.create(
    model="llama-3-1-405b",
    messages=[{"role": "user", "content": "Your question here"}]
)

# Use OpenAI Moderation
response_b = client.chat.completions.create(
    model="openai-moderation",
    messages=[{"role": "user", "content": "Your question here"}]
)

Start Building with XALEN

200+ AI models. One API. Pay-as-you-go.

Get API Key Try in Playground

Frequently Asked Questions

Which is better, Llama 3.1 405B or OpenAI Moderation?

Llama 3.1 405B (Open Source, 405B) offers Largest open model. OpenAI Moderation (Safety, ~1B) offers Free. Choose Llama 3.1 405B for Premium tasks or OpenAI Moderation for Content moderation.

How much does Llama 3.1 405B cost vs OpenAI Moderation?

Llama 3.1 405B: $0.08/1M input, $0.14/1M output. OpenAI Moderation: Free/1M input, N/A/1M output. Both available on XALEN with batch processing at 50% discount.

Can I use both models on XALEN?

Yes. XALEN provides 200+ models through a single OpenAI-compatible API. Switch between Llama 3.1 405B and OpenAI Moderation by changing the model parameter. No code changes needed.

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Last updated: 2026-05-21. Pricing and specifications may change. Check pricing page for latest rates.