Bring a paid-tier Gemini API key. Free-tier keys are rejected because Google may use free-tier data to improve its products.
Enable billing
In Google AI Studio or Google Cloud, link the project to a billing account so the key is on the paid tier.
Create a key
Paste it in ShopAssist
In the dashboard open AI, choose Your own key, select Google Gemini, paste the key and confirm it is a paid-tier key.
Test and activate
| Model | Tier | Context window | Images | Processing |
|---|---|---|---|---|
Gemini 3.1 Flash-Lite gemini-3.1-flash-lite | Standard | 1,048,576 tokens | Yes | Google global |
Gemini 3.5 Flash-Lite gemini-3.5-flash-lite | Standard | 1,048,576 tokens | Yes | Google global |
Gemini 3.8 Flash gemini-3.8-flash | Premium | 1,048,576 tokens | Yes | Google global |
Estimate based on list prices on 2026-09-28; your provider bills you directly.
| Provider | Model | USD per 1,000 conversations | ≈ EUR per 1,000 conversations |
|---|---|---|---|
| Azure OpenAI | GPT-6 Luna | $3.61 | €3.10 |
| Mistral | Mistral Small 4 | $4.71 | €4.05 |
| OpenAI | GPT-5.6 Luna | $7.62 | €6.55 |
| Google Gemini | Gemini 3.1 Flash-Lite | $8.85 | €7.61 |
| OpenAI | GPT-5 mini | $9.85 | €8.47 |
| Google Gemini | Gemini 3.5 Flash-Lite | $12.02 | €10.34 |
| Mistral | Mistral Large 3 | $14.70 | €12.64 |
| OpenAI | GPT-5.4 mini | $26.55 | €22.83 |
| Anthropic | Claude Haiku 4.5 | $36.10 | €31.05 |
| Anthropic | Claude Sonnet 5 | $72.20 | €62.09 |
ShopAssist only accepts paid-tier Gemini keys. Enable billing on your Google Cloud project and create a new key.
The Gemini API does not guarantee EU processing. Use Vertex AI in an EU region for EU residency.
Free with your own AI key.