GPT-6 Astra vs Gemini 4 Argon
Facts only. This page does not pick a winner. For a picked winner, see the use case comparison on Tools.
| GPT-6 Astra | Gemini 4 Argon | |
|---|---|---|
| API model IDs | gpt-6-astra | gemini-4-argon |
| Context window | 1,050,000 | 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 | $10 (verified 2026-11-05) | $2 (verified 2026-11-05) |
Frequently asked questions
- Which has the larger context window, GPT-6 Astra or Gemini 4 Argon?
- GPT-6 Astra holds 1,050,000 tokens and Gemini 4 Argon holds 1,048,576. GPT-6 Astra holds more. The context window counts the prompt, any attached files, and the reply together.
- Which is cheaper, GPT-6 Astra or Gemini 4 Argon?
- Per million input tokens, GPT-6 Astra was $10 (verified 2026-11-05) and Gemini 4 Argon was $2 (verified 2026-11-05). Gemini 4 Argon is cheaper per input token. Output tokens cost $50 and $10 respectively, and output volume usually decides the bill.
- Does GPT-6 Astra or Gemini 4 Argon train on API data?
- GPT-6 Astra does not train on API data by default, and Gemini 4 Argon does not train on API data by default. Zero data retention is on-request for GPT-6 Astra and on-request for Gemini 4 Argon. Verified 2026-09-08 and 2026-09-08 against the providers' own documentation.
- Is GPT-6 Astra or Gemini 4 Argon being retired?
- GPT-6 Astra is active. Gemini 4 Argon 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.