Model family timeline
Last updated Aug 1, 2025
Gemini 2.5 model releases
A source-backed timeline for the Gemini 2.5 model family, collecting release dates, labs, access details, context windows, and major lifecycle changes.
4 models
Gemini 2.5 Deep Think
AvailableGoogle's enhanced Gemini 2.5 reasoning mode for harder math, science, coding, and multimodal analysis. Previewed at Google I/O 2025 and later made available to Gemini app subscribers, Deep Think uses more deliberative reasoning for complex prompts.
Gemini 2.5 Flash-Lite
AvailableGoogle's lowest-latency, lowest-cost Gemini 2.5 tier, designed for summarization, classification, extraction, routing, and other high-volume production tasks. Proprietary API model with a 1M-token context and multimodal support.
Gemini 2.5 Flash
AvailableGoogle's faster, lower-cost Gemini 2.5 model for high-throughput multimodal and agentic workloads. It brought Gemini 2.5's reasoning improvements to a production Flash tier with a 1M-token context and broad text, image, audio, video, and coding support.
Gemini 2.5 Pro
DeprecatedReasoning-focused Gemini 2.5 model that made thinking a core part of Google's flagship model line.