Model Selection

Choose the right Gemini model for your task.

Available Models

Gemini 1.5 Pro

• Best for: Complex analysis, large codebases
• Context: 2M tokens
• Use when: Analyzing entire projects, architectural reviews

Gemini 1.5 Flash

• Best for: Quick responses, routine tasks
• Context: 1M tokens
• Use when: Fast code reviews, simple explanations

Gemini 1.5 Flash-8B

• Best for: Ultra-fast responses
• Context: 1M tokens
• Use when: Quick checks, simple queries

Setting Models

Via Environment Variable

export GEMINI_MODEL="gemini-1.5-pro-002"

In Configuration

{
  "mcpServers": {
    "gemini-cli": {
      "command": "gemini-mcp",
      "env": {
        "GEMINI_MODEL": "gemini-1.5-flash"
      }
    }
  }
}

Per Request (Coming Soon)

/gemini-cli:analyze --model=flash @file.js quick review

Model Comparison

Model	Speed	Context	Best Use Case
Pro	Slower	2M tokens	Full codebase analysis
Flash	Fast	1M tokens	Daily development
Flash-8B	Fastest	1M tokens	Quick queries

Cost Optimization

1. Start with Flash for most tasks
2. Use Pro only when you need the full context
3. Flash-8B for simple, repetitive tasks

Token Limits

• Pro: ~2 million tokens (~500k lines of code)
• Flash: ~1 million tokens (~250k lines of code)
• Flash-8B: ~1 million tokens (~250k lines of code)

Recommendations

• Code Review: Flash
• Architecture Analysis: Pro
• Quick Fixes: Flash-8B
• Documentation: Flash
• Security Audit: Pro