Language model by Google
Gemini 3 Flash Preview API
model: gemini-3-flash-preview
Call Gemini 3 Flash Preview with your KeelRouter API key, the same key you use for every other model. From $0.513 / $3.08 per 1M tokens, paid per call from a prepaid balance. Failed calls are free.
Pricing
| Option | Price |
|---|---|
| Input | $0.513 per 1M tokens |
| Output | $3.08 per 1M tokens |
Call it
OpenAI-compatible endpoint /v1/chat/completions.
curl https://api.keelrouter.com/v1/chat/completions \
-H "Authorization: Bearer $KEELROUTER_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "gemini-3-flash-preview",
"messages": [
{
"role": "user",
"content": "Write a haiku about the sea."
}
]
}'Parameters
| Name | Type | Notes |
|---|---|---|
| model | string | Required. gemini-3-flash-preview |
| messages | array | Required. OpenAI chat format |
| max_tokens | integer | Output cap; also sets the hold |
| stream | boolean | Server-sent events; usage is billed at the end |
| temperature | number | Passed through |
| tools | array | Passed through when the model supports them |
FAQ
- How much does the Gemini 3 Flash Preview API cost on KeelRouter?
- From $0.513 / $3.08 per 1M tokens. You pay per call from a prepaid USD balance; failed calls are not charged.
- How do I call Gemini 3 Flash Preview?
- Send an OpenAI-compatible request to /v1/chat/completions with model "gemini-3-flash-preview" and your KeelRouter API key.
- Is this the official Gemini 3 Flash Preview API?
- No. KeelRouter is an independent API gateway. Requests run on Gemini 3 Flash Preview through our upstream providers, and the language model keeps its own safety filters.
- How long are results kept?
- We keep request records (tokens and cost), not your prompts or answers.
More from Google
Gemini 3 Pro Preview
From $0.65 / $4.50 per 1M tokens
Gemini 3 Pro (Thinking)
From $0.65 / $4.50 per 1M tokens
Gemini 3.1 Flash Lite
From $0.30 / $1.80 per 1M tokens
Gemini 3.1 Pro Preview
From $0.65 / $4.50 per 1M tokens
Gemini 3.5 Flash
From $0.58 / $3.50 per 1M tokens
Gemini 3.6 Flash
From $0.29 / $1.40 per 1M tokens
KeelRouter is an independent service and is not affiliated with Google. Gemini 3 Flash Preview is a trademark of its owner, used here only to name the model a request runs on.