Google · llm model
Gemini 3.8 Flash
Gemini 3.8 Flash is a Google language model released Sep 2, 2026; Google's newest language model in our dataset is Gemini 4 Argon. Proprietary, API access only. Google's current fast Gemini model ("most intelligent Flash model" per Google's changelog), replacing Gemini 3.7 Flash. Verified against vendor sources on Oct 26, 2026.
Reported Last verified · All models · JSON · Markdown
- ReleasedSep 2, 2026
- Context window1.05M1,048,576 tokens
- Max output66K65,536 tokens
- LicenceProprietaryProprietary (API)
Key facts
| Fact | Value | Source |
|---|---|---|
| Vendor | n/a | |
| Released | Sep 2, 2026 | source |
| Status | generally available | n/a |
| API id | gemini-3.8-flash | source |
| Context window | 1,048,576 tokens (1.05M) | source |
| Max output | 65,536 tokens | source |
| Input | text, image, video, audio, pdf | source |
| Licence | Proprietary (API) | source |
| Pricing | $0.75 in / $3.75 out per 1M tokens; from Jan 1, 2027: $1.5 / $7.5 Current pricing runs through Dec 31, 2026, then $1.50 / $7.50. | source |
Where Gemini 3.8 Flash sits in our data
- Released Sep 2, 2026 (week 36 of 2026), in September 2026. Other models in our data released that month: GPT-6.1 Sol, Claude Sonnet 5.5, Claude Opus 5.5, Gemini 3.8 Flash TTS, Gemini 3.8 Flash-Lite TTS, GPT-6 Luna.
- The previous Google model we track is Gemini Omni 1.1 Flash (Aug 27, 2026), 6 days earlier.
- Of the 60 models in our data with a published context window, Gemini 3.8 Flash has the number 15 largest (1.05M tokens). Our data is not every model on the market.
- Google tools we cover: Gemini Notebook, Google ADK, Gemini CLI.
- All releases by date: AI model releases by month · new AI models this week. Choosing for code: best LLM for coding.
How Gemini 3.8 Flash differs from Gemini 3.5 Flash-Lite
Read from the recorded facts of the two models, not from a head-to-head test. We have not run either.
- We have a recorded price for Gemini 3.8 Flash but none for Gemini 3.5 Flash-Lite.
- Both list a 1.05M-token context window.
- Both accept text, image, video, audio, pdf as input.
- Gemini 3.8 Flash came out 43 days after Gemini 3.5 Flash-Lite.
- Facts for the other model: Gemini 3.5 Flash-Lite.
What we tested
Nothing yet. We have not run Gemini 3.8 Flash ourselves, so every fact on this page is Reported from the sources below. When we do test it, the scope will be stated here and in our test logs. See methodology.
Not verified, left out
We could not confirm these on a vendor page, so we do not state them.
- Output modalities were not captured from the model page.
Sources
More from Google
- Gemini 3.5 Flash-Lite (Jul 21, 2026)
- Gemini Omni 1.1 Flash (Aug 27, 2026)
- Gemini 3.5 Transcribe (Aug 26, 2026)
- Gemini 3.8 Live (Sep 15, 2026)
- Gemini 3.8 Live Extended Thinking (Sep 15, 2026)
- Gemini 3.8 Flash TTS (Sep 22, 2026)
- Gemini 3.8 Flash-Lite TTS (Sep 22, 2026)