Gemini 4 Argon vs Gemini 3.1 Pro Preview
Facts only. This page does not pick a winner. For a picked winner, see the use case comparison on Tools.
| Gemini 4 Argon | Gemini 3.1 Pro Preview | |
|---|---|---|
| API model IDs | gemini-4-argon | gemini-3.1-pro-preview |
| Context window | 1,048,576 | 1,048,576 |
| Lifecycle | active | active |
| License | proprietary | proprietary |
| Trains on API data | No | No |
| Zero data retention | on-request | on-request |
| Input per 1M tokens | $2 (verified 2026-11-05) | $2 (verified 2026-11-05) |
Frequently asked questions
- Which has the larger context window, Gemini 4 Argon or Gemini 3.1 Pro Preview?
- Gemini 4 Argon holds 1,048,576 tokens and Gemini 3.1 Pro Preview holds 1,048,576. Both hold 1,048,576 tokens. The context window counts the prompt, any attached files, and the reply together.
- Which is cheaper, Gemini 4 Argon or Gemini 3.1 Pro Preview?
- Per million input tokens, Gemini 4 Argon was $2 (verified 2026-11-05) and Gemini 3.1 Pro Preview was $2 (verified 2026-11-05). Input pricing is the same on both. Output tokens cost $10 and $12 respectively, and output volume usually decides the bill.
- Does Gemini 4 Argon or Gemini 3.1 Pro Preview train on API data?
- Gemini 4 Argon does not train on API data by default, and Gemini 3.1 Pro Preview does not train on API data by default. Zero data retention is on-request for Gemini 4 Argon and on-request for Gemini 3.1 Pro Preview. Verified 2026-09-08 and 2026-09-08 against the providers' own documentation.
- Is Gemini 4 Argon or Gemini 3.1 Pro Preview being retired?
- Gemini 4 Argon is active. Gemini 3.1 Pro Preview is active. Lifecycle checked 2026-11-05 and 2026-11-05. Pin a dated snapshot ID rather than an alias if a retirement would break you.