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Gemini 1.5 Pro vs Claude 3 Opus

Pricing, context window, and benchmark comparison · Last updated April 2026

Quick Verdict

Gemini 1.5 Pro is cheaper than Claude 3 Opus at $1.25/1M/1M vs $15.00/1M/1M input tokens — a 12.0x cost difference. Gemini 1.5 Pro scores higher on quality benchmarks (ELO 1266). Choose Gemini 1.5 Pro for cost-sensitive workloads; both are strong choices depending on your budget.

Detailed Comparison

MetricGemini 1.5 ProClaude 3 Opus
Input Price / 1M tokens$1.25/1MCheaper$15.00/1M
Output Price / 1M tokens$5.00/1MCheaper$75.00/1M
Context Window2MLarger200K
ELO Score (LMSYS)1266Smarter1249
Open Source
Free Tier
Release Date2024-022024-03

Which is cheaper: Gemini 1.5 Pro or Claude 3 Opus?

Gemini 1.5 Pro is the cheaper option at $1.25/1M per 1M input tokens, compared to $15.00/1M for Claude 3 Opus. That is a 12.0x cost difference on input tokens. Output pricing follows a similar pattern: Gemini 1.5 Pro charges $5.00/1M/1M vs $75.00/1M/1M for Claude 3 Opus.

Which has better quality: Gemini 1.5 Pro or Claude 3 Opus?

Based on LMSYS Chatbot Arena rankings, Gemini 1.5 Pro achieves a higher ELO score (1266 vs 1249), suggesting stronger performance on open-ended tasks. Gemini 1.5 Pro excels at 2m token context window — largest available commercially. Claude 3 Opus is known for best claude model for creative writing.

Which should you choose: Gemini 1.5 Pro or Claude 3 Opus?

Choose Gemini 1.5 Pro if:
  • 2M token context window — largest available commercially
  • Strong multimodal capabilities (text, images, video, audio)
  • Excellent price-to-quality ratio
Choose Claude 3 Opus if:
  • Best Claude model for creative writing
  • 200K context window
  • Deep, thoughtful long-form analysis

Frequently Asked Questions

Which is cheaper: Gemini 1.5 Pro or Claude 3 Opus?

Gemini 1.5 Pro is cheaper at $1.25/1M per 1M input tokens, making it 12.0x more affordable.

Which has better quality: Gemini 1.5 Pro or Claude 3 Opus?

Gemini 1.5 Pro scores higher on the LMSYS Chatbot Arena with an ELO of 1266, suggesting better overall quality for most tasks.

Which has a larger context window: Gemini 1.5 Pro or Claude 3 Opus?

Gemini 1.5 Pro has a larger context window at 2000K tokens.

Should I choose Gemini 1.5 Pro or Claude 3 Opus?

Choose Gemini 1.5 Pro if cost is the priority. Choose Gemini 1.5 Pro if benchmark quality is most important. Consider your specific use case: Gemini 1.5 Pro is best for long-context and document-analysis, while Claude 3 Opus excels at creative-writing and research.

Is Gemini 1.5 Pro or Claude 3 Opus open source?

Gemini 1.5 Pro is proprietary. Claude 3 Opus is proprietary.

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