Gemini 3.1 Pro Preview
Model details
- Model
gemini-3.1-pro- Provider
opencode- API
google-generative-ai- Base URL
https://opencode.ai/zen/v1- Input
- text, image
- Reasoning
- Yes
- Context window
- 1,048,576
- Max tokens
- 65,536
Show configuration
{
"providers": {
"opencode": {
"apiKey": "YOUR_API_KEY",
"models": [
{
"id": "gemini-3.1-pro",
"name": "Gemini 3.1 Pro Preview",
"reasoning": true,
"input": [
"text",
"image"
],
"thinkingLevelMap": {
"off": null,
"minimal": null,
"low": "low",
"medium": "medium",
"high": "high",
"xhigh": null,
"max": null
},
"contextWindow": 1048576,
"maxTokens": 65536,
"cost": {
"input": 2,
"output": 12,
"cacheRead": 0.2,
"cacheWrite": 0
}
}
],
"api": "google-generative-ai",
"baseUrl": "https://opencode.ai/zen/v1"
}
}
}Pricing
USD per million tokens. A tier is selected from the total input tokens in each request and applies to that entire request.
| Request input | Input | Output | Cache read | Cache write |
|---|---|---|---|---|
| All requests | $2 | $12 | $0.2 | $0 |
Session cost calculator
Estimate the requests made during an agent session. A user turn can make several model calls while using tools, so costs are calculated per model request.
Estimated session$0.00
- Uncached input
- —
- Cache reads
- —
- Uncached prefixes
- —
- Cache writes
- —
- Output
- —
- Without caching
- —
The first request starts cold unless marked otherwise. Output is billed separately from context growth because reasoning tokens are not always retained. This remains a directional estimate: providers differ in eligibility, rounding, and retention.
Compatibility flags
This API has no model compatibility flags.
