Gemini 1.5 Pro vs GPT-4 Turbo
Pricing, context window, and benchmark comparison · Last updated April 2026
Gemini 1.5 Pro is cheaper than GPT-4 Turbo at $1.25/1M/1M vs $10.00/1M/1M input tokens — a 8.0x 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.
Which is cheaper: Gemini 1.5 Pro or GPT-4 Turbo?
Gemini 1.5 Pro is the cheaper option at $1.25/1M per 1M input tokens, compared to $10.00/1M for GPT-4 Turbo. That is a 8.0x cost difference on input tokens. Output pricing follows a similar pattern: Gemini 1.5 Pro charges $5.00/1M/1M vs $30.00/1M/1M for GPT-4 Turbo.
Which has better quality: Gemini 1.5 Pro or GPT-4 Turbo?
Based on LMSYS Chatbot Arena rankings, Gemini 1.5 Pro achieves a higher ELO score (1266 vs 1260), suggesting stronger performance on open-ended tasks. Gemini 1.5 Pro excels at 2m token context window — largest available commercially. GPT-4 Turbo is known for strong general reasoning.
Which should you choose: Gemini 1.5 Pro or GPT-4 Turbo?
- → 2M token context window — largest available commercially
- → Strong multimodal capabilities (text, images, video, audio)
- → Excellent price-to-quality ratio
- → Strong general reasoning
- → Good at following complex multi-step instructions
- → Reliable tool/function calling
Frequently Asked Questions
Which is cheaper: Gemini 1.5 Pro or GPT-4 Turbo?
Gemini 1.5 Pro is cheaper at $1.25/1M per 1M input tokens, making it 8.0x more affordable.
Which has better quality: Gemini 1.5 Pro or GPT-4 Turbo?
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 GPT-4 Turbo?
Gemini 1.5 Pro has a larger context window at 2000K tokens.
Should I choose Gemini 1.5 Pro or GPT-4 Turbo?
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 GPT-4 Turbo excels at coding and function-calling.
Is Gemini 1.5 Pro or GPT-4 Turbo open source?
Gemini 1.5 Pro is proprietary. GPT-4 Turbo is proprietary.