llmgauge

Google · model

Gemini 3.5 Flash

$1.50/1M in · $9.00/1M out · 1.0M context. That's cheaper than 20% of the 298 models we track, by output price. Here's what it costs, how its price has moved, and where it fits.

output price · per 1M tokens
$9.00
input $1.50/1M · list
Context
1.0M
Input / 1M
$1.50
Output / 1M
$9.00
Modality
text + image + audio + video + file
Provider
Google
Tokenizer
Gemini

Snapshot · source: provider list ↗ · how we measure →

cost at a typical workload
$1,350 / mo

For 1,500 input + 500 output tokens across 200,000 requests/month. That's 225× the cheapest tracked option (Ling-2.6-flash, $6.00/mo).

Tune the workload in the calculator →

output price history
output / 1M

Flat at $9.00 since tracking began 2026-06-14. Full history →

Where it fits

  • Long inputs — a 1.0M-token window holds roughly 1,573 pages of text at once.
  • Multimodal prompts — accepts image input alongside text (and audio).
  • Quality-first tasks where capability matters more than rate — a first-party flagship rather than a budget pick.

Watch for

    These notes are derived from price, context and modality — structural facts, not measured quality. Measured cost-to-finish-a-task lives on the real-cost index.

    Related models

    Gemini 2.5 Pro Google · $10.00/1M out · 1.0M Gemini 2.5 Pro Preview 06-05 Google · $10.00/1M out · 1.0M Gemini 2.5 Pro Preview 05-06 Google · $10.00/1M out · 1.0M Gemini 3.1 Pro Google · $12.00/1M out · 1.0M GPT-5.1-Codex-Max OpenAI · $10.00/1M out · 400K GPT-5.1 OpenAI · $10.00/1M out · 400K

    See how the leading models compare head-to-head →

    How to read Gemini 3.5 Flash's pricing

    Two numbers decide most of the bill: $1.50/1M for input (everything you send — prompt, context, attachments) and $9.00/1M for output (everything it generates, including hidden reasoning tokens). Output is priced 6.0× the input rate here, so the shape of your workload — how much it reads versus writes — matters as much as the headline figure. This is the provider's first-party list price, reconciled against the routed market each run.

    Frequently asked questions

    How much does Gemini 3.5 Flash cost per million tokens?

    Gemini 3.5 Flash is priced at $1.50 per 1M input tokens and $9.00 per 1M output tokens (first-party list price) as of the 2026-06-15 snapshot. Output is the figure that usually drives the bill. Enter your own token volumes in the cost calculator for a monthly estimate.

    What is Gemini 3.5 Flash's context window?

    Gemini 3.5 Flash has a 1.0M-token context window — roughly 1,573 pages of text. Prompt, attachments, conversation and the model's own output all share that budget, and every token you send is billed at the input rate.

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