How much does Claude Sonnet 5 cost vs Gemini 3.5 Flash?

Claude Sonnet 5 costs $2/$10 per 1M tokens (input/output) while Gemini 3.5 Flash costs $1.50/$9 per 1M tokens. Gemini 3.5 Flash is 50% cheaper on input and 40% cheaper on output. For 1M input + 500K output tokens/month, Sonnet 5 costs $10.50 vs Gemini 3.5 Flash's $6 — saving $4.50/month.

Is Sonnet 5 better than Gemini 3.5 Flash?

Sonnet 5 ($2/$10) excels at complex reasoning, code generation, and nuanced analysis. Gemini 3.5 Flash ($1.50/$9) is optimized for speed and cost-efficiency, handling high-throughput tasks well. Both have 1M context windows. Choose Sonnet 5 for quality-critical tasks, Gemini 3.5 Flash for speed and cost at scale.

Which has a larger context window?

Both Claude Sonnet 5 and Gemini 3.5 Flash offer 1M token context windows, making them directly comparable for long-document processing and large codebases.

When should I choose Gemini 3.5 Flash over Sonnet 5?

Choose Gemini 3.5 Flash ($1.50/$9) when cost and speed are priorities: high-volume batch processing, content generation, chatbot responses, and real-time applications where latency matters. Choose Sonnet 5 ($2/$10) when quality matters more: complex code, nuanced analysis, and tasks where output quality directly impacts your product.