Gemini 3.8 Flash API pricing
Google's fast mid-tier line. Gemini 3.8 Flash costs $0.75 / $3.75 per 1M tokens until 31 December 2026, then $1.50 / $7.50.
Gemini 3.8 Flash prices
What it costs in practice
Gemini 3.8 Flash at list prices, no batch discount.
| 1,000 chat replies1,500 tokens in and 300 out each | $2.25 |
|---|---|
| Summarising 100 long reports20,000 tokens in and 800 out each | $1.80 |
| A month of a coding agent400 tasks, 85% of input cached | $162 |
The coding-agent example assumes 85% of input is served from cache, typical for agents that resend the same context each step. Model your own workload
Details
gemini-3.8-flashChecked 27 Sep 2026 against Gemini API pricing and Gemini 3.8 Flash model page .
Other Gemini Flash versions
Google shipped three Flash versions in ten weeks: 3.6 (21 July), 3.7 (13 August) and 3.8 (2 September).
| Model | Input / 1M | Output / 1M | Cached input | Context | Released |
|---|---|---|---|---|---|
|
$0.75 | $3.75 | $0.075 | 1M | 13 Aug 2026 |
|
$0.75 | $3.75 | $0.075 | 1M | 21 Jul 2026 |
Gemini 3.5 FlashPrevious |
$1.50 | $9.00 | $0.15 | 1M | 19 May 2026 |
Gemini 3 FlashPrevious |
$0.50 | $3.00 | $0.050 | 1M | Dec 2025 |
Gemini 2.5 FlashPrevious |
$0.30 | $2.50 | $0.030 | 1M | 17 Jun 2025 |
Version details
Gemini 3.7 Flash
Promo price until 31 DecPrevious$0.75 / $3.75 per 1M tokenscached $0.075 · batch 50% off · 1M context
Newer option: Gemini 3.8 Flash at $0.75 / $3.75. Checked 27 Sep 2026 against Gemini API pricing .
Gemini 3.6 Flash
Promo price until 31 DecPrevious$0.75 / $3.75 per 1M tokenscached $0.075 · batch 50% off · 1M context
Newer option: Gemini 3.8 Flash at $0.75 / $3.75. Checked 27 Sep 2026 against Gemini API pricing .
Gemini 3.5 Flash
Previous$1.50 / $9.00 per 1M tokenscached $0.15 · batch 50% off · 1M context
- Google now labels it a legacy model.
Newer option: Gemini 3.8 Flash at $0.75 / $3.75. Checked 27 Sep 2026 against Gemini API pricing .
Gemini 3 Flash
Previous$0.50 / $3.00 per 1M tokenscached $0.050 · batch 50% off · 1M context
Newer option: Gemini 3.8 Flash at $0.75 / $3.75. Checked 13 Jun 2026 against Gemini API pricing .
Gemini 2.5 Flash
Previous$0.30 / $2.50 per 1M tokenscached $0.030 · batch 50% off · 1M context
- Only available to accounts that used it before.
Newer option: Gemini 3.8 Flash at $0.75 / $3.75. Checked 27 Sep 2026 against Gemini API pricing .
Compare Gemini 3.8 Flash
Price history
All changes- Google launched Gemini 3.8 Flash at $0.75 / $3.75 until 31 December, then $1.50 / $7.50. Source
- Google launched Gemini 3.7 Flash at $0.75 / $3.75. Source
- ▼ 50%Google launched Gemini 3.6 Flash at $0.75 / $3.75, half the price of 3.5 Flash, and Gemini 3.5 Flash-Lite at $0.30 / $2.50. Source
- Google launched Gemini 3.5 Flash at $1.50 / $9. Source
Coming up
- Gemini 3.8 Flash's promotional price ends. It becomes $1.50 / $7.50 per 1M tokens. Source
Google pricing rules
- Batch requests cost 50% less.
- Gemini 3.1 Pro charges a higher rate for prompts above 200K tokens.
- Gemini 3.8 Flash is on a promotional price until 31 December 2026.
Questions
How much does Gemini 3.8 Flash cost?
As of 27 Sep 2026, Gemini 3.8 Flash costs $0.75 per million input tokens and $3.75 per million output tokens, and $0.075 per million cached input tokens. Batch requests cost 50% less. Prices checked 27 Sep 2026.
What is the cheapest Gemini Flash model?
Gemini 2.5 Flash, at $0.30 / $2.50 per million input / output tokens.
What is Gemini 3.8 Flash's context window?
1M tokens.
Does Gemini 3.8 Flash support prompt caching?
Yes. Repeated input read from the cache costs $0.075 per million tokens, 90% less than normal input.