Google: Gemini 3.5 Flash is a 1,048,576-token model served on Composite at $0.938 per million tokens in and $5.63 per million tokens out. Ranked #89 of 179 models by traffic on Composite over the last 30 days, taking 0.02% of tokens and 0.02% of requests.
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Specifications
Specifications and pricing as served by Composite
Model ID
google/gemini-3.5-flash
Provider
Google
Context window
1,048,576 tokens
Accepts
text, image, video, file, audio
Returns
text
Input price
$0.938 per million tokens
Output price
$5.63 per million tokens
Prompt caching
Supported — cached input is billed at the provider's cache rate, on credits and plans alike
Image input
$9.4e-7 per image
Audio input
$0.0000019 per second
Reasoning tokens
$5.63 per million tokens
Web search
$0.0175 per result
Thinking
Always on for this model
Moderated
No
Cost on a monthly plan
About 11 plan credits per typical call (8k in, 1k out)
Routing endpoints
2 (base plus 1 routing variant)
Use Google: Gemini 3.5 Flash in JanitorAI or SillyTavern
Make a Composite API key and type google/gemini-3.5-flash 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.
0.02% of tokens and 0.02% of requests over 30 days.
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-3.5-flash:cheapThink
Google
$0.938 per million tokens input · $5.63 per million tokens output
Pricing
$0.938 per million tokens input · $5.63 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 11 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 sits in the mid-range on price, a reasonable pick for regular roleplay use without going for the cheapest option available.
From the provider
Gemini 3.5 Flash is Google's high-efficiency multimodal model, bringing near-Pro level coding and reasoning at Flash-tier cost and speed. It is highly optimized for coding proficiency and parallel agentic execution...