Side-by-side comparison
Mercury 2 vs Grok 3 Mini Beta
| Mercury 2 | Grok 3 Mini Beta | |
|---|---|---|
| Provider | Inception | xAI |
| Context window Maximum tokens (input + output) the model can process in a single request. Glossary → | 128,000 | 131,072 |
| 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 → | 0.2500 | 0.3000 |
| Output $ / 1M tokens Cost for tokens the model generates. Output is normally 3–5× pricier than input. Glossary → | 0.7500 | 0.5000 |
Frequently asked questions
Which is cheaper, Mercury 2 or Grok 3 Mini Beta?
Grok 3 Mini Beta is cheaper than Mercury 2 on a 50/50 input/output blend by about $0.1 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, Mercury 2 or Grok 3 Mini Beta?
Grok 3 Mini Beta has the larger context window at 131k tokens versus 128k tokens for Mercury 2. That means Grok 3 Mini Beta can ingest about 1.0x as much text per request.
What is the difference between Mercury 2 and Grok 3 Mini Beta?
Mercury 2 comes from Inception; Grok 3 Mini Beta 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.