Claude 3.5 Sonnet vs Gemini 1.5 Pro
Pricing, context window, and benchmark comparison · Last updated April 2026
Gemini 1.5 Pro is cheaper than Claude 3.5 Sonnet at $1.25/1M/1M vs $3.00/1M/1M input tokens — a 2.4x cost difference. Claude 3.5 Sonnet scores higher on quality benchmarks (ELO 1295). Choose Gemini 1.5 Pro for cost-sensitive workloads; choose Claude 3.5 Sonnet for maximum quality.
Which is cheaper: Claude 3.5 Sonnet or Gemini 1.5 Pro?
Gemini 1.5 Pro is the cheaper option at $1.25/1M per 1M input tokens, compared to $3.00/1M for Claude 3.5 Sonnet. That is a 2.4x cost difference on input tokens. Output pricing follows a similar pattern: Claude 3.5 Sonnet charges $15.00/1M/1M vs $5.00/1M/1M for Gemini 1.5 Pro.
Which has better quality: Claude 3.5 Sonnet or Gemini 1.5 Pro?
Based on LMSYS Chatbot Arena rankings, Claude 3.5 Sonnet achieves a higher ELO score (1295 vs 1266), suggesting stronger performance on open-ended tasks. Claude 3.5 Sonnet excels at 200k context window — best for long documents. Gemini 1.5 Pro is known for 2m token context window — largest available commercially.
Which should you choose: Claude 3.5 Sonnet or Gemini 1.5 Pro?
- → 200K context window — best for long documents
- → Industry-leading coding performance
- → Nuanced instruction following
- → 2M token context window — largest available commercially
- → Strong multimodal capabilities (text, images, video, audio)
- → Excellent price-to-quality ratio
Frequently Asked Questions
Which is cheaper: Claude 3.5 Sonnet or Gemini 1.5 Pro?
Gemini 1.5 Pro is cheaper at $1.25/1M per 1M input tokens, making it 2.4x more affordable.
Which has better quality: Claude 3.5 Sonnet or Gemini 1.5 Pro?
Claude 3.5 Sonnet scores higher on the LMSYS Chatbot Arena with an ELO of 1295, suggesting better overall quality for most tasks.
Which has a larger context window: Claude 3.5 Sonnet or Gemini 1.5 Pro?
Gemini 1.5 Pro has a larger context window at 2000K tokens.
Should I choose Claude 3.5 Sonnet or Gemini 1.5 Pro?
Choose Gemini 1.5 Pro if cost is the priority. Choose Claude 3.5 Sonnet if benchmark quality is most important. Consider your specific use case: Claude 3.5 Sonnet is best for coding and document-analysis, while Gemini 1.5 Pro excels at long-context and document-analysis.
Is Claude 3.5 Sonnet or Gemini 1.5 Pro open source?
Claude 3.5 Sonnet is proprietary. Gemini 1.5 Pro is proprietary.