GPT-5 ProvsGrok 3 Mini Beta
Grok 3 Mini Beta is cheaper than GPT-5 Pro at $0.4/M vs $15/M input tokens.
| Spec | GPT-5 Pro | Grok 3 Mini Beta |
|---|---|---|
| Input price | $15/M tokens | $0.4/M tokens |
| Output price | $120/M tokens | $0.8/M tokens |
| Context window | 400K tokens | 131K tokens |
| Weights | Closed | — |
| Free API (OpenRouter) | No | No |
| Released | Oct 2025 | Apr 2025 |
| LiveCodeBench | 54.3% | 80.4% |
Our Verdict
GPT-5 Pro
Grok 3 Mini BetaRunner-up
Not enough votes to call it. On the specs, GPT-5 Pro has the edge: bigger model tier, newer, bigger context window.
Grok 3 Mini Beta costs 150x less per token.
Slight edge
API pricing
Cost per 1M tokens
GPT-5 Pro
Input
$15.00
Output
$120.00
Grok 3 Mini Beta
Input
$0.40
38× cheaper
Output
$0.80
150× cheaper
Grok 3 Mini Beta is cheaper on both: 38× input, 150× output.
Where to run it
1 host
GPT-5 Pro1 host
Grok 3 Mini Beta
No hosts listed on OpenRouter.
Per million tokens. Prices and uptime via OpenRouter, checked 8 Sep 2026.
Research
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