Gemini 3.8 Flash

Gemini 3.8 Flash is a fast, lower-cost Google model released 2026-09-02. OpenRouter lists $0.825 per million input tokens and $4.125 output, a 1,048,576-token context, and text, image, video, PDF and audio input. Google's own Gemini API page showed Flash at $0.75 and $3.75, a lower figure than OpenRouter's, so the same model can be priced differently across routes. It is closed. We would suggest it as the cost-conscious Gemini choice for long-context summaries, extraction and agent steps where the top model is more than the job needs. The limit is that the Flash line changes quickly, with 3.5, 3.6, 3.7 and 3.8 all listed within a few months, so we pin the exact version in any recommendation and recheck. Prices and specifications come from the OpenRouter listing we checked on 31 October 2026, and we have not tested the model ourselves.