Gemini 2.5 Pro vs GPT-5.4 nano
Pricing, context window, and benchmark comparison · Last updated April 2026
GPT-5.4 nano is cheaper than Gemini 2.5 Pro at $0.20/1M/1M vs $1.25/1M/1M input tokens — a 6.3x cost difference. Gemini 2.5 Pro scores higher on quality benchmarks (ELO 1385). Choose GPT-5.4 nano for cost-sensitive workloads; choose Gemini 2.5 Pro for maximum quality.
Which is cheaper: Gemini 2.5 Pro or GPT-5.4 nano?
GPT-5.4 nano is the cheaper option at $0.20/1M per 1M input tokens, compared to $1.25/1M for Gemini 2.5 Pro. That is a 6.3x cost difference on input tokens. Output pricing follows a similar pattern: Gemini 2.5 Pro charges $10.00/1M/1M vs $1.25/1M/1M for GPT-5.4 nano.
Which has better quality: Gemini 2.5 Pro or GPT-5.4 nano?
Based on LMSYS Chatbot Arena rankings, Gemini 2.5 Pro achieves a higher ELO score (1385 vs 1280), suggesting stronger performance on open-ended tasks. Gemini 2.5 Pro excels at 2m token context window — among the largest available. GPT-5.4 nano is known for cheapest openai model — $0.20/1m input.
Which should you choose: Gemini 2.5 Pro or GPT-5.4 nano?
- → 2M token context window — among the largest available
- → Strong multimodal reasoning across text, video, and audio
- → Excellent price-to-quality ratio vs. flagships
- → Cheapest OpenAI model — $0.20/1M input
- → Good at classification, routing, and extraction
- → 272K context window even at low price
Frequently Asked Questions
Which is cheaper: Gemini 2.5 Pro or GPT-5.4 nano?
GPT-5.4 nano is cheaper at $0.20/1M per 1M input tokens, making it 6.3x more affordable.
Which has better quality: Gemini 2.5 Pro or GPT-5.4 nano?
Gemini 2.5 Pro scores higher on the LMSYS Chatbot Arena with an ELO of 1385, suggesting better overall quality for most tasks.
Which has a larger context window: Gemini 2.5 Pro or GPT-5.4 nano?
Gemini 2.5 Pro has a larger context window at 2000K tokens.
Should I choose Gemini 2.5 Pro or GPT-5.4 nano?
Choose GPT-5.4 nano if cost is the priority. Choose Gemini 2.5 Pro if benchmark quality is most important. Consider your specific use case: Gemini 2.5 Pro is best for long-context and document-analysis, while GPT-5.4 nano excels at low-cost and fast-response.
Is Gemini 2.5 Pro or GPT-5.4 nano open source?
Gemini 2.5 Pro is proprietary. GPT-5.4 nano is proprietary.