Google: Gemini 3 Flash Preview is a 1,048,576-token model served on Composite at $0.313 per million tokens in and $1.88 per million tokens out. Ranked #54 of 179 models by traffic on Composite over the last 30 days, taking 0.14% of tokens and 0.13% of requests. Measured on Composite, 89.5% of its last 19 requests on Composite succeeded, the typical first token arrives in 14321 ms, output runs at about 251.4 tokens per second.
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Specifications
Specifications and pricing as served by Composite
Model ID
google/gemini-3-flash-preview
Provider
Google
Context window
1,048,576 tokens
Accepts
text, image, file, audio, video
Returns
text
Input price
$0.313 per million tokens
Output price
$1.88 per million tokens
Prompt caching
Supported — cached input is billed at the provider's cache rate, on credits and plans alike
Image input
$3.1e-7 per image
Audio input
$6.2e-7 per second
Reasoning tokens
$1.88 per million tokens
Web search
$0.0175 per result
Thinking
Optional - see "Google: Gemini 3 Flash Preview (Reasoning)" in the catalog to turn it on by default
Moderated
No
Cost on a monthly plan
About 3.5 plan credits per typical call (8k in, 1k out)
Routing endpoints
2 (base plus 1 routing variant)
Use Google: Gemini 3 Flash Preview in JanitorAI or SillyTavern
Make a Composite API key and type google/gemini-3-flash-preview as the model name. JanitorAI takes the full URL https://composite.lucidity.sh/v1/chat/completions; SillyTavern, ChubAI, Agnai and RisuAI take https://composite.lucidity.sh/v1. It runs on credits, a plan, or your own provider key.
0.14% of tokens and 0.13% of requests over 30 days.
Success rate
89.5%
Across the last 19 requests Composite served for this model.
Time to first token
14321 ms
Median across the same sample.
Output speed
251.4 tok/s
Median generation rate after the first token.
Routing variants
The same model behind 1 alternative endpoint. Call the id directly to pin a route; the base id above picks for you.
Route
Model ID
Provider
Price
cheapThink
google/gemini-3-flash-preview:cheapThink
Google
$0.313 per million tokens input · $1.88 per million tokens output
Pricing
$0.313 per million tokens input · $1.88 per million tokens output
Credits pay the provider’s price plus 25%; cache hits cost less.
On a monthly plan, a typical call (8k tokens in, 1k out) uses about 3.5 plan credits, at the provider's own price.
Provider
Google
Roleplay fit
Gemini models combine large context windows with fast throughput, which keeps response times low even in busy group chats.
Context behavior
With a 1,048,576-token context window, it can hold a long-running roleplay or a full lorebook in memory without losing earlier plot details, so it suits multi-session campaigns and character cards with heavy backstory.
Cost for regular use
It is priced low enough for high-volume daily roleplay without the per-message cost adding up quickly.
From the provider
Gemini 3 Flash Preview is a high speed, high value thinking model designed for agentic workflows, multi turn chat, and coding assistance. It delivers near Pro level reasoning and tool...