Model board / Gemini 3.8 Flash

Gemini 3.8 Flash

Name: Gemini 3.8 Flash
Brand: Google · Gemini
Price: 3.75 USD

latest Google · Gemini

Verified 2026-10-15 against the pages listed below. Prices are USD per 1M tokens, list rate — no committed-use, enterprise or volume discount.

Input

$0.75

Cached input

$0.075

Cache write

—

Output

$3.75

Context window

1,048,576

Max output

65,536

Weights

closed

Caching

both

introductory through 2026-12-31; the pricing page states it rises to $1.50/$7.50 on 2027-01-01. Cache storage $0.50 per 1M/hr, doubling to $1.00 on the same date. Identical to Gemini 3.7 Flash in every column

1,048,576 in / 65,536 out, stated on the model's own page — the latest-model page rounds them to 1M / 64K

cached input at 10% of base; explicit caches also bill hourly storage

Watch out

Arrives at exactly Gemini 3.7 Flash's price, so the upgrade is free, but it inherits the same clock: $0.75/$3.75 is introductory and doubles on 2027-01-01. Thinking is tunable across low, medium and high, and medium is the default — a cost model built on the low setting will not match the bill

What we would use it for

The default Flash pick — 3.7's price with a newer model behind it

What this has cost, week by week

Output price at each refresh since 2026-09-03. A vendor change is the provider changing its price. Our correction means this board changed what it prints and the provider's charge did not move — the two are never merged, because publishing the second as the first would be a price rise that never happened.

09-03 $3.75→09-10 $3.75→09-17 $3.75→09-24 $3.75→10-01 $3.75→10-08 $3.75→10-15 $3.75

our correction2026-10-01 · window, max_output — 1,000,000 / 64,000 → 1,048,576 / 65,536: the board had carried the latest-model page's rounded 1M / 64K; the model's own page states the exact figures, as it does for the other six Gemini rows. Google changed nothing.

Where these numbers came from

No number on this page was written that was not read from one of those pages on 2026-10-15. If one is wrong, send us the source URL and it is corrected in the next weekly refresh, with a changelog line saying what was wrong — contact@naderu.com.

Jobs this is one of our picks for

Chat assistant — Multi-turn conversation, the ordinary case (chat-assistant)
Summarisation — Long documents in, short faithful text out (summarization)
Translation — Language pairs, with terminology you control (translation)
RAG and grounded answers — Answers built on passages you retrieved (rag-search)
Web search — Live internet retrieval, fresh facts and search grounding (web-search)

Discussed in Naderu Weekly

Why web search busts your prompt cache — 2026-10-15
Same price, new rules — 2026-10-01
Three launches, no price rises — 2026-09-24
Nobody changed a price this week — 2026-09-03

The rest of the board

This row sits alongside 69 others on the model board, refreshed every week. The same data as JSON, and the terms for using it, are at /board-data.