Google reportedly testing Gemini 3.8 Flash internally, outperforming 3.7
Per Business Insider, Google employees are testing Gemini 3.8 Flash Preview internally on the Jetski platform, with early feedback saying it clearly outperforms 3.7 Flash released weeks earlier. It would be the fourth consecutive Flash model with no Pro counterpart. Google has not officially announced it, so timing and details remain unverified.
Confirmed
- Posts by @kimmonismus, @koltregaskes, @haider1 and others cite Business Insider reporting that Gemini 3.8 Flash is being tested internally at Google.
- Per @Able-Line2683 relaying a Reddit leak, testing occurs on Google's internal platform Jetski as Gemini 3.8 Flash Preview.
- Early users say 3.8 clearly beats 3.7 Flash, released August 13.
- @haider1 notes the Flash cadence: 3.5 on May 19, 3.6 on July 21, 3.7 on August 13 — roughly monthly — and predicts Gemini 4.0 will debut after 3.8.
- @LastConclusion8984 says Gemini 3.8 Flash's existence is confirmed and mentions another unnamed model appearing alongside.
- @koltregaskes points out this is the fourth straight Flash model with no Pro version.
Unconfirmed
- All information comes from media-cited leaks and internal feedback; Google has made no official announcement, and the release timing, capability details, and the mysterious model mentioned by @LastConclusion8984 remain unverified.
Why it matters
- @kimmonismus and @haider1 both argue the rapid iteration reflects pressure from OpenAI and Anthropic.
- @koltregaskes and commenters note Google's continued focus on Flash over Pro; if 3.8's gains are real, it could further shift the positioning of its lightweight flagship models.
2026-08-28 ~ 2026-08-30 · 7 related posts
Primary sources
- Rumor: Google launching Gemini 3.8 weeks after 3.7 — kimmonismus ·
- Google ships new Gemini Flash model monthly; 3.8 in internal testing — haider1 ·
- Rumor: Google internally testing Gemini 3.8 Flash — Able-Line2683 ·
- [source] Rumor: Google internally testing Gemini 3.8 Flash — Able-Line2683 · 2026-08-28
- Gemini 3.8 Flash reportedly in internal testing, marking fourth Flash model release without Pro — koltregaskes · 2026-08-28
- Gemini 3.8 Flash reportedly outperforms 3.7 Flash in internal tests — koltregaskes · 2026-08-28
- Gemini 3.8 Flash Reportedly in Internal Testing, Outperforming 3.7 — haider1 · 2026-08-28
- Gemini 3.8 Flash Confirmed Alongside Another Mystery Model — Last_Conclusion_8984 · 2026-08-29
- [source] Google ships new Gemini Flash model monthly; 3.8 in internal testing — haider1 · 2026-08-30
1 near-duplicate retellings: kimmonismus