Side-by-side comparison
GPT-4o (2024-08-06) vs Gemini 3.1 Pro Preview Custom Tools
OpenAI
GPT-4o (2024-08-06)
👁 Vision
🔧 Tools
{} JSON
Input / 1M
$2.5000
Output / 1M
$10.0000
Google
Gemini 3.1 Pro Preview Custom Tools
👁 Vision
🔧 Tools
{} JSON
Input / 1M
$2.0000
Output / 1M
$12.0000
| GPT-4o (2024-08-06) | Gemini 3.1 Pro Preview Custom Tools | |
|---|---|---|
| Provider | OpenAI | |
| Context window Maximum tokens (input + output) the model can process in a single request. Glossary → | 128,000 | 1,048,576 |
| 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 → | 2.5000 | 2.0000 |
| Output $ / 1M tokens Cost for tokens the model generates. Output is normally 3–5× pricier than input. Glossary → | 10.0000 | 12.0000 |
Frequently asked questions
Which is cheaper, GPT-4o (2024-08-06) or Gemini 3.1 Pro Preview Custom Tools?
GPT-4o (2024-08-06) is cheaper than Gemini 3.1 Pro Preview Custom Tools 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-4o (2024-08-06) or Gemini 3.1 Pro Preview Custom Tools?
Gemini 3.1 Pro Preview Custom Tools has the larger context window at 1M tokens versus 128k tokens for GPT-4o (2024-08-06). That means Gemini 3.1 Pro Preview Custom Tools can ingest about 8.2x as much text per request.
What is the difference between GPT-4o (2024-08-06) and Gemini 3.1 Pro Preview Custom Tools?
GPT-4o (2024-08-06) comes from OpenAI; Gemini 3.1 Pro Preview Custom Tools comes from Google. They differ in pricing, context window, and supported capabilities — see the side-by-side table on this page for the exact figures, refreshed nightly.