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  5. GLM 5.3 FlashXvsLlama 3.1 405B
Updated Sep 2026

GLM 5.3 FlashXvsLlama 3.1 405B

GLM 5.3 FlashX is cheaper than Llama 3.1 405B at $0.37/M vs $2.7/M input tokens.

GLM 5.3 FlashX and Llama 3.1 405B compared across 5 shared prompts
SpecGLM 5.3 FlashXLlama 3.1 405B
Input price$0.37/M tokens$2.7/M tokens
Output price$1.25/M tokens$3.1/M tokens
Context window1.0M tokens128K tokens
Weights—Open
Free API (OpenRouter)NoNo
ReleasedSep 2026Jul 2024
Our Verdict
GLM 5.3 FlashX
GLM 5.3 FlashX
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

GLM 5.3 FlashX
Input
$0.37
7.3× cheaper
Output
$1.25
2.5× cheaper
Llama 3.1 405B
Input
$2.70
Output
$3.10

GLM 5.3 FlashX is cheaper on both: 7.3× input, 2.5× output.

Where to run it

1 host

GLM 5.3 FlashX1 host
HostInOutContextUptime
Z.aifp8$0.37 in·$1.25 out·1M·100% up
Llama 3.1 405B

No hosts listed on OpenRouter.

Per million tokens. Prices and uptime via OpenRouter, checked 23 Sep 2026.

Research

What we learned reading every model

FAQ

Common questions

GLM 5.3 FlashX is developed by Zhipu AI while Llama 3.1 405B is developed by Meta AI. GLM 5.3 FlashX has a 1.0M 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. GLM 5.3 FlashX 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.

GLM 5.3 FlashX costs $0.37/M input tokens and Llama 3.1 405B costs $2.7/M input tokens. GLM 5.3 FlashX is $2.33/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 GLM 5.3 FlashX 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.

Keep exploring

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Same lab, same size, long tail

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Model pages

GLM 5.3 FlashX logo
GLM 5.3 FlashX12 outputs, specs and price
Llama 3.1 405B logo
Llama 3.1 405B12 outputs, specs and price
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