OverblastGoogle · language model and image model
Nano Banana 2 (Gemini 3.1 Flash Image)
Google: Nano Banana 2 (Gemini 3.1 Flash Image) is a model on the Overblast AI Gateway. Call it as google/gemini-3.1-flash-image with one Overblast API key, paid from your AI credits.
Prices are final: what a call costs in AI credits, in US dollars. As of 2 October 2026, from the live catalogue.
As Language model
Price
| Input, per M tokens | $1.00 |
|---|---|
| Output, per M tokens | $6.00 |
What it does
| Does | Chat completions, Messages (Claude Code), Responses (Codex) |
|---|
Where it runs
| Regions | Runs globally; it cannot be pinned to the EU or the US yet |
|---|---|
| Zero data retention | Yes: served only by endpoints that keep neither the prompt nor the answer |
| Context | 131,072 tokens |
| Endpoint | POST /v1/chat/completions |
Call it
curl https://ai.overblast.app/v1/chat/completions \
-H "Authorization: Bearer $OVERBLAST_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "google/gemini-3.1-flash-image",
"messages": [
{
"role": "user",
"content": "Say hello in Estonian"
}
]
}'As Image model
Price
| Price | $120.00 / M tokens |
|---|
What it does
| Does | Makes a picture from a prompt, Edits pictures you send, Re-renders a picture at 4K |
|---|---|
| Pictures in | 0 to 14 |
| Pictures per call | 1 |
| Resolutions | 512, 1K, 2K, 4K |
| Aspect ratios | 1:1, 1:4, 1:8, 2:3, 3:2, 3:4, 4:1, 4:3, 4:5, 5:4, 8:1, 9:16, 16:9, 21:9 |
Where it runs
| Regions | Runs globally; it cannot be pinned to the EU or the US yet |
|---|---|
| Zero data retention | Not applicable: image calls cannot carry the requirement |
| Endpoint | POST /v1/images |
Call it
curl https://ai.overblast.app/v1/images \
-H "Authorization: Bearer $OVERBLAST_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "google/gemini-3.1-flash-image",
"prompt": "A lighthouse at dawn, watercolour"
}'Aliases that pick it today
This alias resolves to this model right now. An alias can move to another model as the catalogue changes.
auto/images(Auto: images)
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