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  5. Grok 3vsGrok 4.7
Updated Sep 2026

Grok 3vsGrok 4.7

Grok 4.7 has a larger context window than Grok 3 (500K tokens vs 128K tokens).

Grok 3 and Grok 4.7 compared across 2 shared prompts
SpecGrok 3Grok 4.7
Input price—$1.5999999999999999/M tokens
Output price—$4.8/M tokens
Context window128K tokens500K tokens
Weights—Closed
Free API (OpenRouter)NoNo
ReleasedFeb 2025Sep 2026
Our Verdict
Grok 3
Grok 3
Grok 4.7
Grok 4.7

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

Too close to call
API pricing

Cost per 1M tokens

Grok 3
Input
—
Output
—
Grok 4.7
Input
$1.60
Output
$4.80
Where to run it

1 host

Grok 3

No hosts listed on OpenRouter.

Grok 4.71 host
HostInOutContextUptime
xAI$1.60 in·$4.80 out·500k·99.1% up

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

Research

What we learned reading every model

FAQ

Common questions

Both are developed by xAI but target different use cases. Grok 3 has a 128K token context window vs Grok 4.7's 500K. You can compare their actual outputs across 2 challenges on Rival to see how they differ in practice.

It depends on your use case. Grok 3 and Grok 4.7 each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 2 challenges so you can judge which fits your needs best.

This page shows a side-by-side comparison of Grok 3 and Grok 4.7 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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Rival
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