Side-by-side comparison
GPT-5.4 Mini vs Grok 4.3
OpenAI
GPT-5.4 Mini
👁 Vision
🔧 Tools
{} JSON
Input / 1M
$0.7500
Output / 1M
$4.5000
| GPT-5.4 Mini | Grok 4.3 | |
|---|---|---|
| Provider | OpenAI | xAI |
| Context window Maximum tokens (input + output) the model can process in a single request. Glossary → | 400,000 | 1,000,000 |
| 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 → | 0.7500 | 1.2500 |
| Output $ / 1M tokens Cost for tokens the model generates. Output is normally 3–5× pricier than input. Glossary → | 4.5000 | 2.5000 |
Frequently asked questions
Which is cheaper, GPT-5.4 Mini or Grok 4.3?
Grok 4.3 is cheaper than GPT-5.4 Mini on a 50/50 input/output blend by about $0.75 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, GPT-5.4 Mini or Grok 4.3?
Grok 4.3 has the larger context window at 1M tokens versus 400k tokens for GPT-5.4 Mini. That means Grok 4.3 can ingest about 2.5x as much text per request.
What is the difference between GPT-5.4 Mini and Grok 4.3?
GPT-5.4 Mini comes from OpenAI; Grok 4.3 comes from xAI. They differ in pricing, context window, and supported capabilities — see the side-by-side table on this page for the exact figures, refreshed nightly.