Gemini 3.8 Flash
A Google model. 1 prices across 1 channels side by side, each with its source and check date – plus specs, licence, speed and benchmarks.
- Official in/out per 1M
- $0.75 / $3.75
- Lowest (official)
- $0.75 / $3.75
- Context
- 1.05M
- AA index
- 40.9
Prices checked 2026-10-10Official sources linked on every rowNo estimates
01Specs at a glance
Official values first; gaps filled from OpenRouter’s API where the vendor page is silent.
| Vendor | |
|---|---|
| Context window | 1.05M (1,048,576 tokens) |
| Max output | 66K |
| Input | Text · Image · Video · File/PDF · Audio |
| Output | Text |
| Tool calling / JSON | Yes / Yes |
| Weights & licence | Closed · Proprietary (API only) |
| Released | Sep 2, 2026 (OpenRouter listing date) |
| Model IDs | gemini-3.8-flash |
02Prices on 1 channels
Per 1M tokens, in the currency each source publishes (1 USD = 6.7 CNY for the blended column). Sorted: official first, then cheapest.
| Channel | Source | Input | Output | Cache hit | Blended $ | Context | Notes |
|---|---|---|---|---|---|---|---|
| Official Vendor API, billed in USD | Official 10-10 | $0.75 | $3.75 | $0.075 | 1.5 | 1.05M | Batch −50%Batch -50%; free tier available on many models; Promo price through 2026-12-31; from 2027-01-01 1.50/7.50 |
“Official” = vendor pricing page; “Platform” = the platform’s own pricing page; “OpenRouter” = price listed on OpenRouter, not checked on the platform’s site. Click a source tag to open the original page.
03Where you can use it
Derived only from the price sources above. Country restrictions are set by each vendor – check their terms before you sign up.
- Vendor API, billed in USD
Official - Free option
Gemini 3.8 Flash→
04Performance
All results →Speed and AA index from Artificial Analysis public leaderboards (not our own tests); benchmark scores from our benchmark library, best result per benchmark.
- AA indexGemini 3.8 Flash (High)
- 40.9
- Output speed (median)
- 137 tok/s
- Time to first token
- 25.77s
- AA index per $ (blended)
- 27.28
Default TTFT includes thinking time at the highest reasoning setting; low-effort settings respond much faster.
| Benchmark | Best score | Source | Date |
|---|---|---|---|
| LMArena Text | 1497 | official | 2026-10-08 |
| LMArena WebDev | 1584 | official | 2026-10-08 |
| LMArena Vision | 1290 | official | 2026-10-02 |
| GPQA Diamond | 95.4% | independent | 2026-09-02 |
| AIME (OTIS Mock AIME 2024–2025) | 98.9% | independent | 2026-09-02 |
| Humanity's Last Exam | 44.5% | compiled | 2026-09-02 |
| ARC-AGI-1 | 98.5% | official | 2026-10-22 |
05Price changes we recorded
All price changes →From our daily re-checks of the sources above.
No price change recorded since we started tracking (2026-10-10).
06More from Google
FAQ
How much does the Gemini 3.8 Flash API cost?
On the official pricing page: $0.75 / $3.75 per 1M input / output tokens, cached input $0.075 (checked 2026-10-10).
What is the context window of Gemini 3.8 Flash?
1.05M tokens of context, up to 66K output tokens. Platforms may cap it lower – see the table.
Is Gemini 3.8 Flash open source?
No. It is only available through APIs and the vendor’s apps.