GPT-5.4 Nano vs 
Grok 3 Mini Beta
GPT-5.4 Nano is cheaper than Grok 3 Mini Beta at $0.2/M vs $0.4/M input tokens.
Minimalist Landing Page
Whole landing page for a startup that reads your face. It renders or it doesn't.
Loading the build
Loading the build
Which answer wins?
Favorites
Movie
Same pick
Album
Same pick
Book
City
Game
Same pick
GPT-5.4 NanoGPT-5.4 Nano
The Matrix
The Dark Side of the Moon
To Kill a Mockingbird
Lisbon
The Legend of Zelda: Breath of the Wild
Grok 3 Mini BetaGrok 3 Mini Beta
The Matrix
The Dark Side of the Moon
I, Robot
San Francisco
The Legend of Zelda: Breath of the Wild
Price and specs
Not enough votes to call it. On the specs, GPT-5.4 Nano has the edge: newer, bigger context window.
| Spec | GPT-5.4 Nano | Grok 3 Mini Beta |
|---|---|---|
| Input price | $0.2/M tokens | $0.4/M tokens |
| Output price | $1.25/M tokens | $0.8/M tokens |
| Context window | 400K tokens | 131K tokens |
| Weights | Closed | — |
| Free API (OpenRouter) | No | No |
| Released | Mar 2026 | Apr 2025 |
| At 10M a month | $2.00 | $4.00 |
Input tokens at list price. No caching, no batch discount.
Where to run it
Grok 3 Mini Beta
No hosts listed on OpenRouter.
Per million tokens. Prices and uptime via OpenRouter, checked 13 Oct 2026.
Common questions
What is the difference between GPT-5.4 Nano and Grok 3 Mini Beta?
GPT-5.4 Nano is developed by OpenAI while Grok 3 Mini Beta is developed by xAI. GPT-5.4 Nano has a 400K token context window vs Grok 3 Mini Beta's 131K. You can compare their actual outputs across 13 challenges on Rival to see how they differ in practice.
Which is better, GPT-5.4 Nano or Grok 3 Mini Beta?
It depends on your use case. GPT-5.4 Nano and Grok 3 Mini Beta each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 13 challenges so you can judge which fits your needs best.
How much does GPT-5.4 Nano cost compared to Grok 3 Mini Beta?
GPT-5.4 Nano costs $0.2/M input tokens and Grok 3 Mini Beta costs $0.4/M input tokens. GPT-5.4 Nano is $0.20/M cheaper per input. Check their side-by-side outputs on Rival to see if the price difference is justified by quality.
How can I compare GPT-5.4 Nano and Grok 3 Mini Beta on Rival?
This page shows a side-by-side comparison of GPT-5.4 Nano 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.
More comparisons
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Same lab, same size, long tail
- GPT-5.4 Nano vs GPT-5.4 MiniVersion compare
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