Gemini 3.5's 2M+ token context is the killer feature for workflows that choke other models. Here's how to use it effectively.
Full codebase analysis
Drop an entire monorepo into one prompt for architecture review, dependency mapping, and security audits. Claude Fable 5's 1M context covers most repos; Gemini wins on the largest.
Video & multimodal
Upload hour-long recordings for meeting summaries, UI walkthrough QA, and training content indexing — native video understanding without frame extraction scripts.
Legal & compliance
Process full contract corpora, regulatory filings, or discovery document sets in one pass. Pair with human review for final sign-off.
Cost tips
Long prompts are expensive even at $8/M input. Cache repeated prefix context. Chunk only when you exceed 2M tokens — rare for most teams.
