Gemini 2.5 Flash 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 Flash at $0.20/1M/1M vs $0.30/1M/1M input tokens — a 1.5x cost difference. Gemini 2.5 Flash scores higher on quality benchmarks (ELO 1340). Choose GPT-5.4 nano for cost-sensitive workloads; choose Gemini 2.5 Flash for maximum quality.
Which is cheaper: Gemini 2.5 Flash or GPT-5.4 nano?
GPT-5.4 nano is the cheaper option at $0.20/1M per 1M input tokens, compared to $0.30/1M for Gemini 2.5 Flash. That is a 1.5x cost difference on input tokens. Output pricing follows a similar pattern: Gemini 2.5 Flash charges $2.50/1M/1M vs $1.25/1M/1M for GPT-5.4 nano.
Which has better quality: Gemini 2.5 Flash or GPT-5.4 nano?
Based on LMSYS Chatbot Arena rankings, Gemini 2.5 Flash achieves a higher ELO score (1340 vs 1280), suggesting stronger performance on open-ended tasks. Gemini 2.5 Flash excels at excellent price-performance at flash tier. GPT-5.4 nano is known for cheapest openai model — $0.20/1m input.
Which should you choose: Gemini 2.5 Flash or GPT-5.4 nano?
- → Excellent price-performance at Flash tier
- → 1M token context window
- → Native multimodal
- → 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 Flash or GPT-5.4 nano?
GPT-5.4 nano is cheaper at $0.20/1M per 1M input tokens, making it 1.5x more affordable.
Which has better quality: Gemini 2.5 Flash or GPT-5.4 nano?
Gemini 2.5 Flash scores higher on the LMSYS Chatbot Arena with an ELO of 1340, suggesting better overall quality for most tasks.
Which has a larger context window: Gemini 2.5 Flash or GPT-5.4 nano?
Gemini 2.5 Flash has a larger context window at 1000K tokens.
Should I choose Gemini 2.5 Flash or GPT-5.4 nano?
Choose GPT-5.4 nano if cost is the priority. Choose Gemini 2.5 Flash if benchmark quality is most important. Consider your specific use case: Gemini 2.5 Flash is best for fast-response and low-cost, while GPT-5.4 nano excels at low-cost and fast-response.
Is Gemini 2.5 Flash or GPT-5.4 nano open source?
Gemini 2.5 Flash is proprietary. GPT-5.4 nano is proprietary.