Gemini 1.5 Pro

Gemini 1.5 Pro is a multimodal language model from Google DeepMind, introduced on 15 February 2024 as the flagship of the Gemini 1.5 generation. It stood out for its very long context window and native multimodality.

The model uses a Mixture-of-Experts (MoE) architecture that selectively activates the most relevant expert pathways depending on the input, improving efficiency. It supports a context window of up to 1 million tokens (up to 2 million in select variants; up to 10 million in testing) — allowing it to process, for example, an hour of video, 11 hours of audio, over 30,000 lines of code or over 700,000 words in a single pass.

Gemini 1.5 Pro is natively multimodal — it accepts text, images, audio and video (and code), and produces text responses (including code and structured data). It achieved results comparable to Gemini 1.0 Ultra while using less compute.

The model was available to developers and enterprises via the Gemini API, Google AI Studio and Google Vertex AI. Gemini 1.5 Pro is now a previous-generation (discontinued) model, superseded by newer Gemini models.