Side-by-side comparison
Grok 3 vs GPT-4o Audio
| Grok 3 | GPT-4o Audio | |
|---|---|---|
| Provider | xAI | OpenAI |
| Context window Maximum tokens (input + output) the model can process in a single request. Glossary → | 131,072 | 128,000 |
| Capabilities Optional capabilities the model advertises: vision (images), tools (function calling), json_mode (structured output). | tools, json_mode | tools, json_mode |
| Input $ / 1M tokens Cost for tokens you send (prompt + context). Cheaper side highlighted. Glossary → | 3.0000 | 2.5000 |
| Output $ / 1M tokens Cost for tokens the model generates. Output is normally 3–5× pricier than input. Glossary → | 15.0000 | 10.0000 |
Frequently asked questions
Which is cheaper, Grok 3 or GPT-4o Audio?
GPT-4o Audio is cheaper than Grok 3 on a 50/50 input/output blend by about $2.75 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, Grok 3 or GPT-4o Audio?
Grok 3 has the larger context window at 131k tokens versus 128k tokens for GPT-4o Audio. That means Grok 3 can ingest about 1.0x as much text per request.
What is the difference between Grok 3 and GPT-4o Audio?
Grok 3 comes from xAI; GPT-4o Audio 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.