Gemini 4 Argon vs GPT-6 Astra
A plain comparison: what they do, what they cost and which to pick for your task.
In short
The strongest models of Google and OpenAI. Gemini 4 Argon is several times cheaper and better with large documents; GPT-6 Astra is for the hardest reasoning.
Gemini 4 Argon is cheaper: an answer costs 4.2 times less than with GPT-6 Astra.
Side by side
| Gemini 4 Argon | GPT-6 Astra | |
|---|---|---|
| Maker | Google, USA | OpenAI, USA |
| Type | the strongest | the strongest |
| Good for | The strongest Gemini. For large documents, analysis and hard questions. | The smartest ChatGPT model. For hard problems, research and difficult maths. |
| Official, $ per 1M | $2 / $12 | $10 / $50 |
| Freepay rate | ×1 / ×6 | ×5 / ×25 |
| Maker’s subscription | The paid Google AI plan costs about $20 a month. | ChatGPT Plus costs $20 a month. |
Prices: your text / answer. The “Freepay rate” shows how many balance tokens a model spends per token of its own; Claude Sonnet 5.5 is ×1.
Which to pick for the task
| Task | Better |
|---|---|
| Large documents | Gemini 4 Argon |
| Hard reasoning | GPT-6 Astra |
| Price | Gemini 4 Argon |
The best way to choose is to ask both models the same question. On Freepay you do it in one chat, switching the model in the input field.
About Gemini 4 Argon
The strongest Gemini. For large documents, analysis and hard questions. Gemini is Google’s AI. It answers fast, works well with large documents and knows a lot of facts. More about Gemini 4 Argon.
About GPT-6 Astra
The smartest ChatGPT model. For hard problems, research and difficult maths. GPT models are made by OpenAI and power ChatGPT, the best-known AI chat. It answers any question, does maths, explains and helps with study. More about GPT-6 Astra.
Frequently asked questions
Which is better, Gemini 4 Argon or GPT-6 Astra?
The strongest models of Google and OpenAI. Gemini 4 Argon is several times cheaper and better with large documents; GPT-6 Astra is for the hardest reasoning.
Which is cheaper, Gemini 4 Argon or GPT-6 Astra?
Gemini 4 Argon is cheaper: an answer costs 4.2 times less than with GPT-6 Astra. Official prices per 1M tokens: Gemini 4 Argon $2 / $12, GPT-6 Astra $10 / $50. On Freepay both are 10x cheaper.
Can I use Gemini 4 Argon and GPT-6 Astra in one place?
Yes. On Freepay both models are in one chat, you switch them in the input field, and the balance is shared.
Do I need two subscriptions for Gemini 4 Argon and GPT-6 Astra?
No. Gemini needs a Google account, and the stronger models come with a paid Google AI plan. ChatGPT needs an account, the free plan limits the best models, and ChatGPT Plus is a monthly subscription. On Freepay one key covers both, with no subscription.