Model detail

`google/gemini-3.5-flash`

Official Google Gemini 3.5 Flash model routed through Vertex AI when project access is enabled.

Playground Endpoints All Models

Provider

Google

Context

1.0M

tokens

Max output

66K

tokens

Default endpoint

google-vertex/global

Input price

$1.5000

per 1M tokens

Output price

$9.0000

per 1M tokens

Energy estimate

130 Wh

per 1M tokens

Fallback models

OpenRouter-compatible metadata

Model ID: google/gemini-3.5-flash
Canonical slug: google/gemini-3.5-flash
Owned by: google
API: zevrouter
Input modalities: text
Output modalities: text
Tokenizer: Other
Instruct type: chat

Pricing JSON

{
  "prompt": "0.0000015",
  "completion": "0.000009",
  "request": "0",
  "image": "0",
  "audio": "0",
  "web_search": "0",
  "internal_reasoning": "0"
}

Parameters

Supported parameters

11 parameters

temperaturetop_ptop_kmax_tokensmax_completion_tokenstoolsstreamstream_optionsthinking_levelthinking_budgetreasoning_effort

Routing

Provider endpoints

Inspect Endpoints

Endpoint	Region	Status	Latency	Carbon intensity	CFE
`google-vertex/global` Google Vertex AI Global (global)	global	default	120 ms	300 gCO2e/kWh	60%

Fallback chain

google/gemini-3-flash-preview, google/gemini-2.5-flash

{
  "model": "google/gemini-3.5-flash",
  "models": ["google/gemini-3.5-flash", "google/gemini-3-flash-preview", "google/gemini-2.5-flash"],
  "messages": [{ "role": "user", "content": "Hello" }]
}

API references

curl "https://zusd-testnet---zevrouter-staging-skwx3z2gxa-uc.a.run.app/api/v1/models"

curl "https://zusd-testnet---zevrouter-staging-skwx3z2gxa-uc.a.run.app/api/v1/models/google/gemini-3.5-flash/endpoints"