Gemini 2.5 Pro ExperimentalvsGrok 4
Gemini 2.5 Pro Experimental is cheaper than Grok 4 at $1/M vs $3/M input tokens.
| Spec | Gemini 2.5 Pro Experimental | Grok 4 |
|---|---|---|
| Input price | $1/M tokens | $3/M tokens |
| Output price | $2/M tokens | $15/M tokens |
| Context window | 1.0M tokens | 256K tokens |
| Parameters | Not disclosed | Not disclosed |
| Weights | Closed | — |
| Free API (OpenRouter) | No | No |
| Released | Mar 2025 | Jul 2025 |
Our Verdict
Gemini 2.5 Pro Experimental
Grok 4Runner-up
Not enough votes to call it. On the specs, Gemini 2.5 Pro Experimental has the edge: bigger model tier, bigger context window.
Gemini 2.5 Pro Experimental costs 7.5x less per token.
Too close to call
Reviewing agent-written code?See a Brief PR report
API pricing
Cost per 1M tokens
Gemini 2.5 Pro Experimental
Input
$1.00
3.0× cheaper
Output
$2.00
7.5× cheaper
Grok 4
Input
$3.00
Output
$15.00
Gemini 2.5 Pro Experimental is cheaper on both: 3.0× input, 7.5× output.
Where to run it
2 hosts
Gemini 2.5 Pro Experimental2 hosts
Grok 4
No hosts listed on OpenRouter.
Per million tokens. Prices and uptime via OpenRouter, checked 13 Sep 2026.
Writing DNA
Style Comparison
Similarity
44%
Grok 4 uses 59.8x more emoji
Gemini 2.5 Pro Experimental
Grok 4
54%Vocabulary56%
15wSentence Length18w
0.35Hedging0.65
5.6Bold2.4
3.9Lists2.4
0.00Emoji0.60
0.39Headings0.73
0.17Transitions0.06
Based on 18 + 26 text responses
Research
What we learned reading every model
FAQ
Common questions
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