Gemini 4 Argon
Gemini 4 Argon is Google's flagship reasoning model, built for complex software engineering, deep mathematical and scientific problem solving, and autonomous multi-step agents. Google trained it to keep context across...
Specifications
Modalities
Supported Parameters
Max Output Tokens
65,536Reasoning Configuration
- Default
- Thinking on (effort: medium)
- Selectable effort levels
- highmediumlow
- Turning thinking off
- Not possible (always thinks)
Data policy
- Prompt retention
- Unknown — we could not confirm
- Training
- Not used for training
"Unknown" does not mean "safe". It means we could not confirm it.
Whether a provider trains on prompts is a declared value from our terms with them. Retention is determined from the upstream listing for every host this model can reach. Neither is guessed.
Available in the web chat only
Gemini 4 Argon can be used in FastMetal's web chat, billed per token from your prepaid balance like any other model. It is not available through the API or MCP: a request naming it is refused by the gateway (HTTP 403).
Open in chatHow Gemini 4 Argon actually answers
Real responses to our standard prompts, recorded on FastMetal.
Count the number of 'r's in 'strawberry'
Count the number of 'r's in 'strawberry'. Explain your reasoning step by step.
Debug This Error
I'm getting the following error in my Node.js application: TypeError: Cannot read properties of undefined (reading 'map') at UserList (/app/components/UserList.js:12:25) at renderWithHooks (/app/node_modules/rea…
Code Review
Please review the following Python function and suggest improvements for readability, performance, and best practices: def get_data(url, retries=3): import requests import time for i in range(retries):…
Frequently asked questions
- How much does the Gemini 4 Argon API cost?
- On FastMetal, Gemini 4 Argon is billed per token: $2.20 per 1M input tokens and $11.00 per 1M output tokens on a US-dollar account, before tax. Usage is drawn from a prepaid balance; there is no subscription or monthly fee.
- What is the context window of Gemini 4 Argon?
- 1,048,576 tokens, shared between the prompt and the response.
- How does Gemini 4 Argon rank?
- #1 on the public arena's Overall board (ELO 1,525). Ranks move as the leaderboard is updated.
- What do I need to try Gemini 4 Argon?
- Create an account and add credit; the model is then available both in the browser chat and over the API. There is no contract or minimum spend.
Try Gemini 4 Argon right now
Gemini 4 Argon is available on FastMetal through one API key. Start in the browser, or call it from the OpenAI SDK.
Leaderboard
Rankings: LMArena leaderboard dataset (lmarena-ai/leaderboard-dataset), CC BY 4.0, snapshot 2026-10-08; category names mapped and ratings rounded by FastMetal.