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  5. Grok 4.7vsLlama 3.1 405B
Updated Sep 2026

Grok 4.7vsLlama 3.1 405B

Grok 4.7 is cheaper than Llama 3.1 405B at $1.6/M vs $2.7/M input tokens.

Grok 4.7 and Llama 3.1 405B compared across 5 shared prompts
SpecGrok 4.7Llama 3.1 405B
Input price$1.6/M tokens$2.7/M tokens
Output price$4.8/M tokens$3.1/M tokens
Context window500K tokens128K tokens
WeightsClosedOpen
Free API (OpenRouter)NoNo
ReleasedSep 2026Jul 2024
Our Verdict
Grok 4.7
Grok 4.7
Llama 3.1 405B
Llama 3.1 405B

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

Too close to call
API pricing

Cost per 1M tokens

Grok 4.7
Input
$1.60
1.7× cheaper
Output
$4.80
Llama 3.1 405B
Input
$2.70
Output
$3.10
1.5× cheaper

Grok 4.7 wins input (1.7× cheaper)·Llama 3.1 405B wins output (1.5× cheaper)

Where to run it

1 host

Grok 4.71 host
HostInOutContextUptime
xAI$1.60 in·$4.80 out·500k·99% up
Llama 3.1 405B

No hosts listed on OpenRouter.

Per million tokens. Prices and uptime via OpenRouter, checked 22 Sep 2026.

Research

What we learned reading every model

FAQ

Common questions

Grok 4.7 is developed by xAI while Llama 3.1 405B is developed by Meta AI. Grok 4.7 has a 500K token context window vs Llama 3.1 405B's 128K. You can compare their actual outputs across 5 challenges on Rival to see how they differ in practice.

It depends on your use case. Grok 4.7 and Llama 3.1 405B 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.

Grok 4.7 costs $1.6/M input tokens and Llama 3.1 405B costs $2.7/M input tokens. Grok 4.7 is $1.10/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 Grok 4.7 and Llama 3.1 405B 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.

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Model pages

Grok 4.7 logo
Grok 4.710 outputs, specs and price
Llama 3.1 405B logo
Llama 3.1 405B12 outputs, specs and price
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