Gemini 3.8 Flash

Google's Gemini 3.8 Flash under high thinking effort generated a complete 1,708-line 3D open-world wilderness survival game in a single HTML file on the first attempt — featuring 2D Simplex noise terrain, dynamic biomes, unprompted Web Audio sound synthesis, a 6-slot hotbar, and full day/night lighting cycles.

Google released Gemini 3.8 Flash on September 2, 2026 — a 5.7-point jump over 3.7 Flash on autonomous software engineering at the same introductory price. A restricted Cyber variant, available only through the new Fairwind Program, targets government and critical infrastructure operators for agentic vulnerability remediation.