Llama 3.1 405B vs PlayHT 3.0

Compare Llama 3.1 405B and PlayHT 3.0: pricing, performance, context window, latency, and best use cases. Side-by-side comparison on XALEN.

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

All Meta models All PlayHT models What is an LLM API? Python Quickstart What is inference?
Feature Llama 3.1 405B PlayHT 3.0
CategoryOpen SourceSpeech
Parameters405BGenerative
Context Window128KN/A
Input Price$0.08/1M tokens$0.018/1K/1M tokens
Output Price$0.14/1M tokensN/A/1M tokens
Latency~600ms~250ms

Choose Llama 3.1 405B when:

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

Largest open model, Highest open-source quality

Choose PlayHT 3.0 when:

  • ✓ Voice cloning
  • ✓ Content narration
  • ✓ IVR systems
Key Strengths:

Instant cloning, Good quality, Many languages

Verdict: Llama 3.1 405B vs PlayHT 3.0

For cost efficiency, PlayHT 3.0 wins at $0.018/1K/1M input tokens. For speed, PlayHT 3.0 is faster at ~250ms. Llama 3.1 405B excels at Premium tasks while PlayHT 3.0 is better for Voice cloning. 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. PlayHT 3.0 costs $0.018/1K input and N/A output. PlayHT 3.0 is 4.4x 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. PlayHT 3.0 offers N/A context at ~250ms. 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. PlayHT 3.0 (Speech) works best for: Voice cloning, Content narration, IVR systems.

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 PlayHT 3.0
response_b = client.chat.completions.create(
    model="playht-3",
    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 PlayHT 3.0?

Llama 3.1 405B (Open Source, 405B) offers Largest open model. PlayHT 3.0 (Speech, Generative) offers Instant cloning. Choose Llama 3.1 405B for Premium tasks or PlayHT 3.0 for Voice cloning.

How much does Llama 3.1 405B cost vs PlayHT 3.0?

Llama 3.1 405B: $0.08/1M input, $0.14/1M output. PlayHT 3.0: $0.018/1K/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 PlayHT 3.0 by changing the model parameter. No code changes needed.

Related Comparisons

Llama 3.1 405B vs Whisper Large V3 Llama 3.1 405B vs Gemma 3 27B Llama 3.1 405B vs Llama 4 Scout Llama 3.1 405B vs Llama 4 Maverick Llama 3.1 405B vs Llama 3.3 70B Llama 3.1 405B vs Llama 3.1 70B Turbo

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