GPT-5.4 mini vs Gemini 2.5 Flash
Pricing, context window, and benchmark comparison · Last updated April 2026
Gemini 2.5 Flash is cheaper than GPT-5.4 mini at $0.30/1M/1M vs $0.75/1M/1M input tokens — a 2.5x cost difference. GPT-5.4 mini scores higher on quality benchmarks (ELO 1360). Choose Gemini 2.5 Flash for cost-sensitive workloads; choose GPT-5.4 mini for maximum quality.
Which is cheaper: GPT-5.4 mini or Gemini 2.5 Flash?
Gemini 2.5 Flash is the cheaper option at $0.30/1M per 1M input tokens, compared to $0.75/1M for GPT-5.4 mini. That is a 2.5x cost difference on input tokens. Output pricing follows a similar pattern: GPT-5.4 mini charges $4.50/1M/1M vs $2.50/1M/1M for Gemini 2.5 Flash.
Which has better quality: GPT-5.4 mini or Gemini 2.5 Flash?
Based on LMSYS Chatbot Arena rankings, GPT-5.4 mini achieves a higher ELO score (1360 vs 1340), suggesting stronger performance on open-ended tasks. GPT-5.4 mini excels at strong mid-tier quality close to gpt-5.4 at 1/3 the price. Gemini 2.5 Flash is known for excellent price-performance at flash tier.
Which should you choose: GPT-5.4 mini or Gemini 2.5 Flash?
- → Strong mid-tier quality close to GPT-5.4 at 1/3 the price
- → Fast inference and low latency
- → Same 272K context window as flagship
- → Excellent price-performance at Flash tier
- → 1M token context window
- → Native multimodal
Frequently Asked Questions
Which is cheaper: GPT-5.4 mini or Gemini 2.5 Flash?
Gemini 2.5 Flash is cheaper at $0.30/1M per 1M input tokens, making it 2.5x more affordable.
Which has better quality: GPT-5.4 mini or Gemini 2.5 Flash?
GPT-5.4 mini scores higher on the LMSYS Chatbot Arena with an ELO of 1360, suggesting better overall quality for most tasks.
Which has a larger context window: GPT-5.4 mini or Gemini 2.5 Flash?
Gemini 2.5 Flash has a larger context window at 1000K tokens.
Should I choose GPT-5.4 mini or Gemini 2.5 Flash?
Choose Gemini 2.5 Flash if cost is the priority. Choose GPT-5.4 mini if benchmark quality is most important. Consider your specific use case: GPT-5.4 mini is best for customer-support and data-extraction, while Gemini 2.5 Flash excels at fast-response and low-cost.
Is GPT-5.4 mini or Gemini 2.5 Flash open source?
GPT-5.4 mini is proprietary. Gemini 2.5 Flash is proprietary.