GPT-4o mini vs Gemini 1.5 Pro
Pricing, context window, and benchmark comparison · Last updated April 2026
GPT-4o mini is cheaper than Gemini 1.5 Pro at $0.15/1M/1M vs $1.25/1M/1M input tokens — a 8.3x cost difference. GPT-4o mini scores higher on quality benchmarks (ELO 1272). Choose GPT-4o mini for cost-sensitive workloads; both are strong choices depending on your budget.
Which is cheaper: GPT-4o mini or Gemini 1.5 Pro?
GPT-4o mini is the cheaper option at $0.15/1M per 1M input tokens, compared to $1.25/1M for Gemini 1.5 Pro. That is a 8.3x cost difference on input tokens. Output pricing follows a similar pattern: GPT-4o mini charges $0.60/1M/1M vs $5.00/1M/1M for Gemini 1.5 Pro.
Which has better quality: GPT-4o mini or Gemini 1.5 Pro?
Based on LMSYS Chatbot Arena rankings, GPT-4o mini achieves a higher ELO score (1272 vs 1266), suggesting stronger performance on open-ended tasks. GPT-4o mini excels at extremely low cost — cheapest flagship-family model. Gemini 1.5 Pro is known for 2m token context window — largest available commercially.
Which should you choose: GPT-4o mini or Gemini 1.5 Pro?
- → Extremely low cost — cheapest flagship-family model
- → Fast inference
- → Good at structured data extraction
- → 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: GPT-4o mini or Gemini 1.5 Pro?
GPT-4o mini is cheaper at $0.15/1M per 1M input tokens, making it 8.3x more affordable.
Which has better quality: GPT-4o mini or Gemini 1.5 Pro?
GPT-4o mini scores higher on the LMSYS Chatbot Arena with an ELO of 1272, suggesting better overall quality for most tasks.
Which has a larger context window: GPT-4o mini or Gemini 1.5 Pro?
Gemini 1.5 Pro has a larger context window at 2000K tokens.
Should I choose GPT-4o mini or Gemini 1.5 Pro?
Choose GPT-4o mini if cost is the priority. Choose GPT-4o mini if benchmark quality is most important. Consider your specific use case: GPT-4o mini is best for customer-support and data-extraction, while Gemini 1.5 Pro excels at long-context and document-analysis.
Is GPT-4o mini or Gemini 1.5 Pro open source?
GPT-4o mini is proprietary. Gemini 1.5 Pro is proprietary.