Gemini 3.5 Flash-Lite

Save 70%Official

google/gemini-3.5-flash-lite

Google Gemini 3.5 Flash-Lite — the cheapest, fastest model in the 3.5 line, 1M context.

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Context window: 1M
Max output: 66K
Input modalities: text · image · video · file
Output modalities: text
Capabilities: Vision · Reasoning · Tool calling · JSON mode · Video input · Normalize Openai Envelope
Upstream release: 2026-07-21
RouteMux name: google/gemini-3.5-flash-lite

Live model playground

Try Gemini 3.5 Flash-Lite here

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

streamchat

1Configure input

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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.

Gemini 3.5 Flash-Lite API pricing

Source: gemini_x0.3 · Verified 2026-09-09

InputOfficial $0.3 / M tokens

$0.09/ M tokensSave 70%

OutputOfficial $2.5 / M tokens

$0.75/ M tokensSave 70%

Cache read $0.009/M · Cache write —/M

Estimate cost

Input tokensOutput tokens

Estimated cost$0.00165

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.

Key capabilities

VisionReasoningTool callingJSON modeVideo inputNormalize Openai Envelope

Interface and protocols

OpenAI Chat CompletionsStreamingGoogle Vertex AIStreaming

Use any of these IDs to call this model via the API.

RouteMux namegoogle/gemini-3.5-flash-lite

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-3.5-flash-lite",
    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)

0 requests · last 30 days

Total usage—

P50 first-token latencyInsufficient data (0 requests)

Avg throughputInsufficient data (0 requests)

Success rate8.3%

Uptime · 24htested via openai_chat

8.33%

Gemini 3.5 Flash-Lite FAQ

›What is Gemini 3.5 Flash-Lite?

Google Gemini 3.5 Flash-Lite — the cheapest, fastest model in the 3.5 line, 1M context.

›How large is the context window of Gemini 3.5 Flash-Lite?

Gemini 3.5 Flash-Lite supports a context window of up to 1M tokens, with up to 66K output tokens per request.

›How much does the Gemini 3.5 Flash-Lite API cost?

Through RouteMux, Gemini 3.5 Flash-Lite costs $0.09 for input and $0.75 for output (USD per 1M tokens), below the official list price.

›How do I call Gemini 3.5 Flash-Lite via API?

Gemini 3.5 Flash-Lite is OpenAI-compatible: point your base URL at RouteMux and set the model field to google/gemini-3.5-flash-lite — no code changes needed.

›Which input and output modalities does Gemini 3.5 Flash-Lite support?

Gemini 3.5 Flash-Lite accepts text, image, video, file as input and produces text as output.

›When was Gemini 3.5 Flash-Lite released?

Gemini 3.5 Flash-Lite was released on July 21, 2026.

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