GOOGLE VS XAI
Gemini 3.5 Flash vs Grok Build 0.1
Grok Build 0.1 is about 2.7x cheaper than Gemini 3.5 Flash on a blended 3:1 input:output rate — the same 10K-in/2K-out request costs $0.014 vs $0.033. Gemini 3.5 Flash has the larger context window (1,048,576 vs 256,000 tokens).
Pricing verified
API pricing per 1M tokens
| Model | Input / 1M tokens | Output / 1M tokens | Blended (3:1 mix) |
|---|---|---|---|
| Gemini 3.5 Flash | $1.50 | $9.00 | $3.375 |
| Grok Build 0.1 | $1.00 | $2.00 | $1.25 |
Rates from official Google pricing and official xAI pricing, checked 2026-08-11.
What a real workload costs
Example: one request with 10,000 input tokens and 2,000 output tokens, then that request at 100,000 runs per month.
| Model | Per request (10K in / 2K out) | Per month (100K requests) | Monthly delta |
|---|---|---|---|
| Gemini 3.5 Flash | $0.033 | $3,300 | +$1,900 |
| Grok Build 0.1 | $0.014 | $1,400 | — |
Model your own prompt sizes and volumes in the token cost analyzer, or check caching savings with the prompt caching calculator.
Specs side by side
| Spec | Gemini 3.5 Flash | Grok Build 0.1 |
|---|---|---|
| Provider | xAI | |
| Context window | 1,048,576 tokens | 256,000 tokens |
| Model class | General text | General text |
| Tokenizer | Proprietary (counts estimated) | Proprietary (counts estimated) |
Count tokens for each model on its own page: Gemini 3.5 Flash token counter and Grok Build 0.1 token counter. All Google models are on the Gemini Token Counter. All xAI models are on the Grok Token Counter.
FAQ
Gemini 3.5 Flash vs Grok Build 0.1 FAQ
Which is cheaper, Gemini 3.5 Flash or Grok Build 0.1?
Grok Build 0.1 is cheaper. At rates checked 2026-08-11, Gemini 3.5 Flash costs $1.50 input / $9.00 output per 1M tokens, while Grok Build 0.1 costs $1.00 input / $2.00 output — about a 2.7x difference on a typical 3:1 input-heavy workload.
How much does a real request cost on Gemini 3.5 Flash vs Grok Build 0.1?
A request with 10,000 input tokens and 2,000 output tokens costs about $0.033 on Gemini 3.5 Flash and $0.014 on Grok Build 0.1. At 100,000 such requests per month that is $3,300 vs $1,400 — a difference of $1,900 per month.
Which has the bigger context window, Gemini 3.5 Flash or Grok Build 0.1?
Gemini 3.5 Flash. It supports 1,048,576 tokens of context versus 256,000 tokens — roughly 786,000 English words in one request.
Do Gemini 3.5 Flash and Grok Build 0.1 count tokens the same way?
Not exactly. Gemini 3.5 Flash uses a proprietary tokenizer (counts are estimates) and Grok Build 0.1 uses a proprietary tokenizer (counts are estimates). The same prompt will tokenize differently, which shifts effective cost per word.