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  5. GLM 5.3 FlashXvsGrok 3 Mini Beta
Updated Sep 2026

GLM 5.3 FlashXvsGrok 3 Mini Beta

GLM 5.3 FlashX is cheaper than Grok 3 Mini Beta at $0.37/M vs $0.4/M input tokens.

GLM 5.3 FlashX and Grok 3 Mini Beta compared across 5 shared prompts
SpecGLM 5.3 FlashXGrok 3 Mini Beta
Input price$0.37/M tokens$0.4/M tokens
Output price$1.25/M tokens$0.8/M tokens
Context window1.0M tokens131K tokens
Free API (OpenRouter)NoNo
ReleasedSep 2026Apr 2025
Our Verdict
GLM 5.3 FlashX
GLM 5.3 FlashX
Grok 3 Mini Beta
Grok 3 Mini BetaRunner-up

Not enough votes to call it. On the specs, GLM 5.3 FlashX has the edge: bigger model tier, newer, bigger context window.

Slight edge
API pricing

Cost per 1M tokens

GLM 5.3 FlashX
Input
$0.37
1.1× cheaper
Output
$1.25
Grok 3 Mini Beta
Input
$0.40
Output
$0.80
1.6× cheaper

GLM 5.3 FlashX wins input (1.1× cheaper)·Grok 3 Mini Beta wins output (1.6× cheaper)

Where to run it

1 host

GLM 5.3 FlashX1 host
HostInOutContextUptime
Z.aifp8$0.37 in·$1.25 out·1M·100% up
Grok 3 Mini Beta

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 Grok 3 Mini Beta is developed by xAI. GLM 5.3 FlashX has a 1.0M token context window vs Grok 3 Mini Beta's 131K. 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 Grok 3 Mini Beta 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 Grok 3 Mini Beta costs $0.4/M input tokens. GLM 5.3 FlashX is $0.03/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 Grok 3 Mini Beta 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
Grok 3 Mini Beta logo
Grok 3 Mini Beta13 outputs, specs and price
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