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Google: Gemini 3 Pro Image

gemini-3-pro-image-preview

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Gemini 3 Pro Image costs $2.60 per million input tokens and $15.60 per million output tokens, supports 66K context, and is available through the OpenAI-compatible API.

Gemini 3 Pro with native image generation support. Can generate images inline from text prompts. Image output is billed at $120 per million tokens, about $0.14 for a 1K or 2K image and about $0.26 for 4K; text and thinking at $12 per million.

Modalities

Text + Image → Text

Input / output price

$2.60 / $15.60 per 1M

Context

66K · max output 33K

Capabilities

Vision

Pricing

Billed per token actually used and deducted from your credits.

ItemUSD per 1M tokens
Input$2.60
Output$15.60
Cached input$0.260

Calculator

Drag the sliders to estimate what this model will cost.

Per request
$0.0203
Per day
$10.14
Per month (30 days)
$304.20

Gemini 3 Pro Image: input $2.6/M · output $15.6/M · cached input $0.26/M

Request with these settings
curl https://api.geniusrelaygpt.com/v1/chat/completions \
  -H "Authorization: Bearer $API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model": "gemini-3-pro-image-preview", "max_tokens": 800,
       "messages": [{"role": "user", "content": "…"}]}'

Code samples

OpenAI-compatible. Set the base URL to https://api.geniusrelaygpt.com/v1 and the model to gemini-3-pro-image-preview.

curl https://api.geniusrelaygpt.com/v1/chat/completions \
  -H "Authorization: Bearer $API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "gemini-3-pro-image-preview",
    "stream": true,
    "messages": [{"role": "user", "content": "Hello"}]
  }'

Use it in a client: Cursor · Cline · SillyTavern · Codex

Parameters

Common OpenAI parameters can be passed as-is.

temperaturetop_pmax_tokensstreamstoppresence_penaltyfrequency_penaltyseed

FAQ

How is Gemini 3 Pro Image billed?
Input is $2.60 and output is $15.60 per million tokens; cached input is $0.260. The charge for every request is listed in Usage Logs in the console.
How long is the context window?
66K tokens. In a long conversation every turn is billed for the full input, so keep the history under control.
Does it support streaming?
Yes. Add "stream": true to the request to receive server-sent events in the OpenAI format.
Gemini 3 Pro Image API pricing · GeniusRelay