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  5. Llama 3.1 405BvsQwen3.8 Max Prime
Updated Sep 2026

Llama 3.1 405BvsQwen3.8 Max Prime

Llama 3.1 405B is cheaper than Qwen3.8 Max Prime at $2.7/M vs $4/M input tokens.

Llama 3.1 405B and Qwen3.8 Max Prime compared across 5 shared prompts
SpecLlama 3.1 405BQwen3.8 Max Prime
Input price$2.7/M tokens$4/M tokens
Output price$3.1/M tokens$12/M tokens
Context window128K tokens1.0M tokens
WeightsOpenClosed
Free API (OpenRouter)NoNo
ReleasedJul 2024Sep 2026
Our Verdict
Llama 3.1 405B
Llama 3.1 405B
Qwen3.8 Max Prime
Qwen3.8 Max Prime

Not enough votes to call it. On the specs, nothing separates them.

Llama 3.1 405B costs 3.9x less per token.

Too close to call
API pricing

Cost per 1M tokens

Llama 3.1 405B
Input
$2.70
1.5× cheaper
Output
$3.10
3.9× cheaper
Qwen3.8 Max Prime
Input
$4.00
Output
$12.00

Llama 3.1 405B is cheaper on both: 1.5× input, 3.9× output.

Where to run it

1 host

Llama 3.1 405B

No hosts listed on OpenRouter.

Qwen3.8 Max Prime1 host
HostInOutContextUptime
Alibaba Cloud$4.00 in·$12.00 out·1M·99.9% up

Per million tokens. Prices and uptime via OpenRouter, checked 25 Sep 2026.

Research

What we learned reading every model

FAQ

Common questions

Llama 3.1 405B is developed by Meta AI while Qwen3.8 Max Prime is developed by Qwen. Llama 3.1 405B has a 128K token context window vs Qwen3.8 Max Prime's 1.0M. You can compare their actual outputs across 5 challenges on Rival to see how they differ in practice.

It depends on your use case. Llama 3.1 405B and Qwen3.8 Max Prime each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 5 challenges so you can judge which fits your needs best.

Llama 3.1 405B costs $2.7/M input tokens and Qwen3.8 Max Prime costs $4/M input tokens. Llama 3.1 405B is $1.30/M cheaper per input. Check their side-by-side outputs on Rival to see if the price difference is justified by quality.

This page shows a side-by-side comparison of Llama 3.1 405B and Qwen3.8 Max Prime across shared challenges. You can vote on which model produced the better output in a blind duel. Browsing and voting are free. No account is needed to look; signing in only saves your votes and likes.

Keep exploring

More comparisons

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Same lab, same size, long tail

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Qwen3.8 Max Prime vs Qwen3.8 Omni FlashSame lab
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Llama 3.1 405B logoQwen3.5 122B A10B logo
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Llama 3.1 405B vs Qwen3.5 27BCross-provider
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Llama 3.1 405B vs Qwen3.5 35B A3BCross-provider
Llama 3.1 405B logoQwen3.5 397B A17B logo
Llama 3.1 405B vs Qwen3.5 397B A17BSame size

Model pages

Llama 3.1 405B logo
Llama 3.1 405B12 outputs, specs and price
Qwen3.8 Max Prime logo
Qwen3.8 Max Prime19 outputs, specs and price
Rival
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Explore all of Rival

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