Design Arena reports Gemini 3.8 Flash 3D output degraded; Google deprecates Gemini 2.5 models
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👩💻 Paige BaileyOfficialGemini 2.5 models to be deprecated, 2.5 Flash redirected to 3.5 Flash-LiteAIGoogle says Gemini API users on the Gemini 2.5 series should move, as Gemini 2.5 Pro is deprecated and redirected to 3.8 Flash on Dec 1, and Gemini 2.5 Flash to 3.5 Flash-Lite on the same date. Paige Bailey says Google's evals suggest 3.5 Flash-Lite and 3.8 Flash should have similar or stronger capabilities, latencies, and prices, and asks users to report otherwise.
- 👩💻 Paige BaileyOfficialGoogle says Gemini 3.5 Flash-Lite can replace Gemini 2.5 models
AIGoogle says Gemini 2.5 users should move to 3.8 Flash and Flash-Lite, which it expects to match or beat 2.5 on capabilities, latency, and price. The Gemini API auto-redirects Gemini 2.5 Pro to 3.8 Flash and Gemini 2.5 Flash to 3.5 Flash-Lite on Dec 1. Paige Bailey asks developers to report any case where the newer models do not perform as expected.
DesignArenaOfficialDesign Arena says Gemini 3.8 Flash output degraded within a monthAIDesign Arena says Google's Gemini 3.8 Flash produced a noticeably worse 3D scene for the same prompt about a month after release than it did three days after. The share of objects never visible on camera rose from 18% to 57%, and bushes placed underground rose from 0% to 100%. The post presents the two generations as evidence that the model's output degraded over time.
