GPT-5.4 vs Gemini 2.5 Pro
Pricing, context window, and benchmark comparison · Last updated April 2026
Gemini 2.5 Pro is cheaper than GPT-5.4 at $1.25/1M/1M vs $2.50/1M/1M input tokens — a 2.0x cost difference. GPT-5.4 scores higher on quality benchmarks (ELO 1420). Choose Gemini 2.5 Pro for cost-sensitive workloads; choose GPT-5.4 for maximum quality.
Which is cheaper: GPT-5.4 or Gemini 2.5 Pro?
Gemini 2.5 Pro is the cheaper option at $1.25/1M per 1M input tokens, compared to $2.50/1M for GPT-5.4. That is a 2.0x cost difference on input tokens. Output pricing follows a similar pattern: GPT-5.4 charges $15.00/1M/1M vs $10.00/1M/1M for Gemini 2.5 Pro.
Which has better quality: GPT-5.4 or Gemini 2.5 Pro?
Based on LMSYS Chatbot Arena rankings, GPT-5.4 achieves a higher ELO score (1420 vs 1385), suggesting stronger performance on open-ended tasks. GPT-5.4 excels at openai flagship — top-tier reasoning, coding, and multimodal. Gemini 2.5 Pro is known for 2m token context window — among the largest available.
Which should you choose: GPT-5.4 or Gemini 2.5 Pro?
- → OpenAI flagship — top-tier reasoning, coding, and multimodal
- → Native computer use and tool search
- → 272K standard context (expandable to 1M)
- → 2M token context window — among the largest available
- → Strong multimodal reasoning across text, video, and audio
- → Excellent price-to-quality ratio vs. flagships
Frequently Asked Questions
Which is cheaper: GPT-5.4 or Gemini 2.5 Pro?
Gemini 2.5 Pro is cheaper at $1.25/1M per 1M input tokens, making it 2.0x more affordable.
Which has better quality: GPT-5.4 or Gemini 2.5 Pro?
GPT-5.4 scores higher on the LMSYS Chatbot Arena with an ELO of 1420, suggesting better overall quality for most tasks.
Which has a larger context window: GPT-5.4 or Gemini 2.5 Pro?
Gemini 2.5 Pro has a larger context window at 2000K tokens.
Should I choose GPT-5.4 or Gemini 2.5 Pro?
Choose Gemini 2.5 Pro if cost is the priority. Choose GPT-5.4 if benchmark quality is most important. Consider your specific use case: GPT-5.4 is best for coding and reasoning, while Gemini 2.5 Pro excels at long-context and document-analysis.
Is GPT-5.4 or Gemini 2.5 Pro open source?
GPT-5.4 is proprietary. Gemini 2.5 Pro is proprietary.