# Gemini 4 Argon — API pricing & integration guide | Y-API

> Gemini 4 Argon is Google’s flagship reasoning entry, listed with a 1,048,576-token window and audio, file, image, text and video input. The reference names complex software engineering, mathematics, science and autonomous multi-step agents.

This is the markdown representation of https://y-api.bestvirtualgoods.com/models/google/gemini-4-argon. Generated by `scripts/generate-seo-assets.mjs` from the same copy the page renders — do not edit by hand.

Model ID: `google/gemini-4-argon`

Sources reviewed: 2026-10-21. Y-API catalog snapshot: 2026-10-21.

## Choosing this model

Selection advice by Y-API. The checks below are suggested evaluations, not published test results.

### Where to start

Try it on a problem that has an objective answer you can verify — a failing proof, a numerical method that loses precision, a multi-file bug — rather than on open-ended writing.

### What to watch for

Flagship positioning is the publisher’s framing, not a benchmark result on this page. The listed window is the model’s, not a promise that a 1M-token request will be accepted end to end through the gateway.

## Model specifications

These are OpenRouter model-level specifications, not a Y-API compatibility test. A particular route may accept fewer input formats, parameters or tokens. Verify the features you need with a small request; a successful text response does not validate vision or tool calling.

| Field | Value |
| --- | --- |
| Context window | 1,048,576 tokens |
| Input | Audio, File, Image, Text, Video |
| Output | Text |
| Listed on OpenRouter | 2026-10-13 |
| Parameters listed by OpenRouter | `include_reasoning`, `max_tokens`, `reasoning`, `reasoning_effort`, `response_format`, `seed`, `stop`, `structured_outputs`, `temperature`, `tool_choice`, `tools`, `top_p` |

## API pricing & cost estimate

| Price basis | Input / 1M tokens | Output / 1M tokens |
| --- | --- | --- |
| Account credit | $4.00 | $20.00 |
| Cash equivalent | $0.40 | $2.00 |

$1 paid adds $10 of credit. Cash equivalent = credit consumed ÷ 10; this is not the model publisher’s list price.

Input tokens / request: 1000. Output tokens / request: 500. Number of requests: 1000.

Estimated credit consumed: $14.00. Estimated cash equivalent: $1.40.

Illustrative token budget, not measured usage or a quote. Includes input and output; excludes separate media charges, cache discounts and retries. Include billed reasoning tokens in your output budget where applicable. Actual billing follows usage returned by the service.

### Same token budget, different models

| Model | Estimated credit consumed | Estimated cash equivalent |
| --- | --- | --- |
| [Gemini 4 Argon](https://y-api.bestvirtualgoods.com/models/google/gemini-4-argon) | $14.00 | $1.40 |
| [Gemini 3.1 Pro Preview](https://y-api.bestvirtualgoods.com/models/google/gemini-3.1-pro-preview) | $9.50 | $0.95 |
| [GPT-6 Astra](https://y-api.bestvirtualgoods.com/models/openai/gpt-6-astra) | $35.00 | $3.50 |

[View LLM API pricing & billing](https://y-api.bestvirtualgoods.com/pricing)

## API integration examples

These minimal, text-only requests use the exact Y-API model ID. They do not demonstrate image, audio, video, file or tool support. The output limit also needs room for reasoning; an empty answer with finish_reason=length can mean the budget was exhausted.

Set the TOKEN environment variable to a key from your console. Run this on your server or locally; never expose a key in browser code or a public repository.

### A task to try

This integration test fails only when the suite runs in parallel. Give the most likely shared-state cause, the smallest change that removes it, and a command that reproduces the failure before the fix.

```bash
curl --fail-with-body --silent --show-error --max-time 120 \
  'https://api.y-api.bestvirtualgoods.com/v1/chat/completions' \
  -H "Authorization: Bearer ${TOKEN:?Set TOKEN first}" \
  -H 'Content-Type: application/json' \
  --data-binary @- <<'JSON'
{
  "model": "google/gemini-4-argon",
  "messages": [
    {
      "role": "user",
      "content": "This integration test fails only when the suite runs in parallel. Give the most likely shared-state cause, the smallest change that removes it, and a command that reproduces the failure before the fix."
    }
  ],
  "max_tokens": 4096
}
JSON
```

```python
import json
import os
import sys
import urllib.error
import urllib.request

payload = {
  "model": "google/gemini-4-argon",
  "messages": [
    {
      "role": "user",
      "content": "This integration test fails only when the suite runs in parallel. Give the most likely shared-state cause, the smallest change that removes it, and a command that reproduces the failure before the fix."
    }
  ],
  "max_tokens": 4096
}

request = urllib.request.Request(
    "https://api.y-api.bestvirtualgoods.com/v1/chat/completions",
    data=json.dumps(payload).encode("utf-8"),
    headers={
        "Authorization": "Bearer " + os.environ["TOKEN"],
        "Content-Type": "application/json",
    },
    method="POST",
)
try:
    with urllib.request.urlopen(request, timeout=120) as response:
        result = json.load(response)
    print(json.dumps(result, ensure_ascii=False, indent=2))
except urllib.error.HTTPError as error:
    print(error.read().decode("utf-8"), file=sys.stderr)
    raise SystemExit(1)
```

### How to evaluate the result

The proposed reproduction should actually fail before the change and pass after it. A diagnosis that cannot be reproduced is a hypothesis, not a fix.

## Before you choose

### Does the multimodal input list mean I can send video?

The specification lists video input, but gateway forwarding is a separate fact. Test one small video request and check the response before you depend on it in a product.

## Sources & scope

Technical facts come from the cited model page and, where available, its linked publisher card. A card describes that checkpoint; it is not proof of the weights a gateway serves. Prices come only from the Y-API catalog. We do not claim measured latency, uptime or benchmark scores for this endpoint.

- [OpenRouter model page & specifications](https://openrouter.ai/google/gemini-4-argon)
- [Y-API catalog & prices (JSON)](https://y-api.bestvirtualgoods.com/models.json)

## Models to compare

Compare these alternatives on the same inputs. Their descriptions explain different roles; a lower price does not establish equivalent quality.

### [Gemini 3.1 Pro Preview](https://y-api.bestvirtualgoods.com/models/google/gemini-3.1-pro-preview)

Gemini 3.1 Pro Preview is Google’s frontier reasoning entry, accepting text, image, file, audio and video input over a 1,048,576-token window. The Preview label reflects the publisher’s release stage, not a difference in how the API is called.

### [GPT-6 Astra](https://y-api.bestvirtualgoods.com/models/openai/gpt-6-astra)

GPT-6 Astra is listed as the flagship of the GPT-6 generation, with a 1,050,000-token window and file, image and text input. The reference names advanced analysis, software engineering, deep research and document work.

## Links

- HTML version of this page: https://y-api.bestvirtualgoods.com/models/google/gemini-4-argon
- Site index for agents: https://y-api.bestvirtualgoods.com/llms.txt
- Full reference (single file): https://y-api.bestvirtualgoods.com/llms-full.txt
- OpenAPI 3.1 spec: https://y-api.bestvirtualgoods.com/openapi.json
- Model catalog (JSON, no key needed): https://y-api.bestvirtualgoods.com/models.json
- API base URL: `https://api.y-api.bestvirtualgoods.com/v1`
- Contact: support@bestvirtualgoods.com
- Model catalog: https://y-api.bestvirtualgoods.com/models
- Integration guide: https://y-api.bestvirtualgoods.com/docs