Gemini 3 Flash API

Name: Gemini 3 Flash API
Brand: Google

$0.3/Mtok in

Google · text

The cheap long-context workhorse.

Overview

About Gemini 3 Flash

The cheap long-context workhorse. Every model on CompanyFabric shares the same API key, billing balance, and rate-limit envelope — one integration covers the entire library.

Facts

At a glance

Availability

Live

Pricing

$0.3/Mtok in

Metered exactly per call

Context window

1,000k tokens

Commercial use

See license

Commercial output use permitted per Google terms.

Variants

All endpoints

Gemini 3.1 Pro

$2/Mtok in

Million-token context at a mid-tier price.

Chat Completions

Gemini 3 Flash

$0.3/Mtok in

The cheap long-context workhorse.

Chat Completions

Prompt library

Example runs

Write alt text for these 20 product images.

1. Red ceramic mug on oak desk…

This exact run cost $0.002

Quickstart

How to use the Gemini 3 Flash API

1
Create a free CompanyFabric account — starter credits are included, no card required.
2
Copy your API key from the dashboard. One key covers every model in the library.
3
Point any OpenAI SDK at api.companyfabric.com/v1 and set model to "google/gemini-3-flash".
4
Read the exact metered cost of the call from the response — the same number shown in the playground.

Use cases

What teams build with it

Agents & copilots

Drive agent loops, tool calls, and user-facing assistants over the OpenAI-compatible endpoint.

agentstool useassistants

Content pipelines

Summarization, rewriting, and structured generation at metered per-token cost.

contentsummarization

Extraction & classification

Turn unstructured input into typed JSON with schema-constrained output.

extractionjson mode

Get better output

Prompting tips

State the output format before the task — models follow contracts declared early.
Few-shot beats description: two worked examples outperform a paragraph of rules.
Cap output length explicitly when cost matters; output tokens dominate most bills.

Exact, metered, prepaid

Pricing

Endpoint	Type	Price
Gemini 3.1 Pro	Chat	$2 / M input · $8 / M output
Gemini 3 Flash	Chat	$0.3 / M input · $1.2 / M output

Production-grade

Code samples

import OpenAI from "openai"

const client = new OpenAI({
  baseURL: "https://api.companyfabric.com/v1",
  apiKey: process.env.COMPANYFABRIC_API_KEY,
})

const res = await client.chat.completions.create({
  model: "google/gemini-3-flash",
  max_tokens: 1024,
  temperature: 0.7,
  messages: [{ role: "user", content: "Say hello from the fabric." }],
})

console.log(res.choices[0].message.content)

Playground

Try it in the browser

Playground$0.3 in / $1.2 out per 1M tokens

Model

Max output tokens

Prompt

≈ $0.0012

Comparisons

Gemini 3 Flash vs the alternatives

Gemini 3 Flash vs Claude Haiku 4.5

Gemini 3 Flash and Claude Haiku 4.5 compete for the same text workloads. Both run behind the same CompanyFabric key at exact metered prices — A/B them on your real prompts and let the outputs decide, then switch with a one-line change.

Gemini 3 Flash vs DeepSeek V4

Gemini 3 Flash and DeepSeek V4 compete for the same text workloads. Both run behind the same CompanyFabric key at exact metered prices — A/B them on your real prompts and let the outputs decide, then switch with a one-line change.

FAQ

Frequently asked questions

How much does the Gemini 3 Flash API cost?

$0.3 / M input · $1.2 / M output. Every call is metered exactly and shown before you run it.

How do I get a Gemini 3 Flash API key?

Create a CompanyFabric account, and one key unlocks Gemini 3 Flash and every other model in the library. Free starter credits are included — no subscription, no card required to try it.

Why use Gemini 3 Flash on CompanyFabric instead of going direct?

One key, one prepaid balance, and one rate-limit envelope across the whole library, at pricing at parity with or below the direct API. Model switching is a one-line change, and BYOK routing is 0% fee.

Is the API OpenAI-compatible?

Yes — point any OpenAI SDK at api.companyfabric.com/v1 and set model to "google/gemini-3-flash".

Can I use the output commercially?

Commercial output use permitted per Google terms.

How does billing work?

Prepaid credits via card, or BYOK with your own provider keys at 0% platform fee. No subscription required; balances never expire.

Provider