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Gemini 3 Flash Preview

Save 70%Official

google/gemini-3-flash-preview

Gemini 3 Flash Preview — next-gen Flash speed and cost, multimodal input.

Get an API keyView code sample
Context window
1M
Max output
66K
Input modalities
text · image · audio · video
Output modalities
text
Capabilities
Vision · Reasoning · Tool Calling · Json Mode · Coding
RouteMux name
google/gemini-3-flash-preview
Live model playground

Try Gemini 3 Flash Preview here

Tune the request, see the current price ceiling, and inspect the real response without leaving this model page.

streamchat
1Configure input
0 / 20,000
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2Live result

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Enter an input on the left. The same RouteMux Playground execution and billing path powers this embedded test.

conversation

Gemini 3 Flash Preview API pricing

Source: gemini_x0.5 · Verified 2026-07-23

InputOfficial $0.5 / M tokens
$0.15/ M tokensSave 70%
OutputOfficial $3 / M tokens
$0.9/ M tokensSave 70%

Cache read $0.015/M · Cache write —/M

Estimate cost

Estimated cost$0.0024

Limited time20% extra Credits on your first top-up — up to 200 bonus Credits

Applies to your first top-up within 72 hours of signing up. Minimum $20, once per account.

Sign up and claimNo subscription. Pay for what you use.

Key capabilities

VisionReasoningTool CallingJson ModeCoding

Interface and protocols

OpenAI Chat CompletionsStreaming

Use either ID to call this model via the API.

RouteMux namegoogle/gemini-3-flash-preview

You can use these names directly in the request model field.

models/gemini-3-flash-preview

Replace the ROUTEMUX_KEY placeholder with your API key. Create one →

from openai import OpenAI

client = OpenAI(
    base_url="https://api.routemux.com/v1",
    api_key="<ROUTEMUX_KEY>",
)

completion = client.chat.completions.create(
    model="google/gemini-3-flash-preview",
    messages=[{"role": "user", "content": "What is the meaning of life?"}],
)
print(completion.choices[0].message.content)
base_url: https://api.routemux.com/v1

Performance (last 30 days)

Related models

Gemini 3 Flash Preview FAQ

›What is Gemini 3 Flash Preview?

Gemini 3 Flash Preview — next-gen Flash speed and cost, multimodal input.

›How large is the context window of Gemini 3 Flash Preview?

Gemini 3 Flash Preview supports a context window of up to 1M tokens, with up to 66K output tokens per request.

›How much does the Gemini 3 Flash Preview API cost?

Through RouteMux, Gemini 3 Flash Preview costs $0.15 for input and $0.9 for output (USD per 1M tokens), below the official list price.

›How do I call Gemini 3 Flash Preview via API?

Gemini 3 Flash Preview is OpenAI-compatible: point your base URL at RouteMux and set the model field to google/gemini-3-flash-preview — no code changes needed.

›Which input and output modalities does Gemini 3 Flash Preview support?

Gemini 3 Flash Preview accepts text, image, audio, video as input and produces text as output.

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