Claude 3.5 Sonnet vs. Gemini 1.5 Flash — Interactive Cost & Performance Calculator
Compare Claude 3.5 Sonnet vs Gemini 1.5 Flash side-by-side. Use our interactive calculator to estimate exact monthly costs, savings, and performance trade-offs at your scale.
Claude 3.5 Sonnet
Best for: Code generation, agentic workflows & nuanced writing
Gemini 1.5 Flash
Best for: Ultra-low-cost long-context summarization at scale
Side-by-Side Technical & Commercial Breakdown: Claude 3.5 Sonnet vs. Gemini 1.5 Flash
| Dimension | Claude 3.5 Sonnet | Gemini 1.5 Flash |
|---|---|---|
| Provider | Anthropic | Google Cloud Vertex |
| Input Price (per 1M tokens) | $3.000 | $0.075 |
| Output Price (per 1M tokens) | $15.00 | $0.30 |
| Context Window | 200K tokens | 1,000K (1M) tokens |
| Throughput Speed | 78 tok/s | 165 tok/s |
| License / Weights | Proprietary API | Proprietary API |
| Best Use Case | Code generation, agentic workflows & nuanced writing | Ultra-low-cost long-context summarization at scale |
Frequently Asked Questions
Which is more cost-effective in 2026: Claude 3.5 Sonnet or Gemini 1.5 Flash?
It depends on your workload volume. Use the interactive sliders above to model your exact monthly scale. Claude 3.5 Sonnet (Code generation, agentic workflows & nuanced writing) and Gemini 1.5 Flash (Ultra-low-cost long-context summarization at scale) have different unit economics that cross over as volume scales.
When should an engineering team choose Claude 3.5 Sonnet over Gemini 1.5 Flash?
Choose Claude 3.5 Sonnet when your primary priority is: Code generation, agentic workflows & nuanced writing. Choose Gemini 1.5 Flash when you prioritize: Ultra-low-cost long-context summarization at scale.