Side-by-side comparison
Gemini 3.1 Pro Preview Custom Tools vs Claude Sonnet 4.5
Google
Gemini 3.1 Pro Preview Custom Tools
👁 Vision
🔧 Tools
{} JSON
Input / 1M
$2.0000
Output / 1M
$12.0000
Anthropic
Claude Sonnet 4.5
👁 Vision
🔧 Tools
{} JSON
Input / 1M
$3.0000
Output / 1M
$15.0000
| Gemini 3.1 Pro Preview Custom Tools | Claude Sonnet 4.5 | |
|---|---|---|
| Provider | Anthropic | |
| Context window Maximum tokens (input + output) the model can process in a single request. Glossary → | 1,048,576 | 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 → | 2.0000 | 3.0000 |
| Output $ / 1M tokens Cost for tokens the model generates. Output is normally 3–5× pricier than input. Glossary → | 12.0000 | 15.0000 |
Frequently asked questions
Which is cheaper, Gemini 3.1 Pro Preview Custom Tools or Claude Sonnet 4.5?
Gemini 3.1 Pro Preview Custom Tools is cheaper than Claude Sonnet 4.5 on a 50/50 input/output blend by about $2 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, Gemini 3.1 Pro Preview Custom Tools or Claude Sonnet 4.5?
Gemini 3.1 Pro Preview Custom Tools has the larger context window at 1M tokens versus 1M tokens for Claude Sonnet 4.5. That means Gemini 3.1 Pro Preview Custom Tools can ingest about 1.0x as much text per request.
What is the difference between Gemini 3.1 Pro Preview Custom Tools and Claude Sonnet 4.5?
Gemini 3.1 Pro Preview Custom Tools comes from Google; Claude Sonnet 4.5 comes from Anthropic. They differ in pricing, context window, and supported capabilities — see the side-by-side table on this page for the exact figures, refreshed nightly.