Gemini API Cheatsheet 2026 — Free Tier Limits, Models, and Endpoints in One Place

If this is useful, a ❤️ helps others find it. Everything I keep looking up when building with Gemini — in one place. Models (2026) Model Context Best for gemini-2.5-flash-preview 1M tokens General use, thinking, fast gemini-2.5-pro-preview 1M tokens Complex reasoning, best quality gemini-1.5-flash 1M tokens Stable, production-ready gemini-1.5-pro 2M tokens Longest context gemini-2.0-flash-lite 1M tokens Lowest latency, highest volume For most use cases: gemini-2.5-flash-preview Free Tier Limits