Side-by-side comparison
Grok 4.1 Fast vs GPT-4o-mini (2024-07-18)
xAI
Grok 4.1 Fast
👁 Vision
🔧 Tools
{} JSON
Input / 1M
$0.2000
Output / 1M
$0.5000
OpenAI
GPT-4o-mini (2024-07-18)
👁 Vision
🔧 Tools
{} JSON
Input / 1M
$0.1500
Output / 1M
$0.6000
| Grok 4.1 Fast | GPT-4o-mini (2024-07-18) | |
|---|---|---|
| Provider | xAI | OpenAI |
| Context window Maximum tokens (input + output) the model can process in a single request. Glossary → | 2,000,000 | 128,000 |
| Capabilities Optional capabilities the model advertises: vision (images), tools (function calling), json_mode (structured output). | vision, tools, json_mode | vision, tools, json_mode |
| Input $ / 1M tokens Cost for tokens you send (prompt + context). Cheaper side highlighted. Glossary → | 0.2000 | 0.1500 |
| Output $ / 1M tokens Cost for tokens the model generates. Output is normally 3–5× pricier than input. Glossary → | 0.5000 | 0.6000 |
Frequently asked questions
Which is cheaper, Grok 4.1 Fast or GPT-4o-mini (2024-07-18)?
Grok 4.1 Fast is cheaper than GPT-4o-mini (2024-07-18) on a 50/50 input/output blend by about $0.025 per 1M tokens. Exact savings depend on your input-vs-output ratio — use the cost calculator on this page for a workload-specific estimate.
Which has a larger context window, Grok 4.1 Fast or GPT-4o-mini (2024-07-18)?
Grok 4.1 Fast has the larger context window at 2M tokens versus 128k tokens for GPT-4o-mini (2024-07-18). That means Grok 4.1 Fast can ingest about 15.6x as much text per request.
What is the difference between Grok 4.1 Fast and GPT-4o-mini (2024-07-18)?
Grok 4.1 Fast comes from xAI; GPT-4o-mini (2024-07-18) comes from OpenAI. They differ in pricing, context window, and supported capabilities — see the side-by-side table on this page for the exact figures, refreshed nightly.