Google AI Updates: October 5, 2026

1. Google’s New Gemini Tiers Limit Free Users to Flash-Lite

Google. Under new consumer tiers rolling out in October, free Gemini users get only Flash-Lite, down from 3.6 Flash and limited 3.1 Pro access today. AI Plus subscribers ($4.99/month) lose Pro and keep Flash-Lite and Flash, while Pro requires AI Pro ($19.99/month) or AI Ultra. The Decoder suggests the change may make room for the costlier Gemini 4 Argon. Source

2. Google Paused Its Open Source Bug Bounty Over a Flood of AI Submissions

Google. Google suspended its Open Source Software Vulnerability Rewards Program as of October 1, citing “a significant rise in automated submissions, the vast majority of which are not valid,” and promised an update in Q1 2027. Tom’s Hardware reports maintainers were overwhelmed by invalid or hallucinated reports. Participants are being directed to Google’s other bug bounty programs. Source

3. Google’s RRSI Keeps Self-Improving Agent Harnesses From Overfitting Their Tests

Google Cloud AI Research. RRSI (Regularized Recursive Self-Improvement) caps how many edits a harness rewrite can bundle, shrinks that budget over time, and uses a critic to reject changes that hardcode task names or benchmark tricks. Across eight coding, office, and engineering benchmarks with Claude Opus 4.8 held frozen, it gained up to 14.1 points on training tasks and up to 4.7 points on unseen benchmarks while using about 30 percent fewer tokens than an unregularized version. The paper argues much recent agent progress comes from harness engineering rather than new models. Source