Gemini 2.5 Flash vs GPT-5.4 Pro: Pricing Comparison
Compare pricing, capabilities, and costs for your LLM workloads.
Gemini 2.5 Flash
Pricing (per 1M tokens)
Input$0.3000
Output$2.50
Cached Input$0.0300
Batch Input$0.1500
Batch Output$1.25
Context & Output
Context Window1M tokens
Max Output65.5K tokens
Capabilities
Categorymid
Multimodaltext + image + audio
Fine-tuningNo
StreamingYes
OpenAI
GPT-5.4 Pro
Pricing (per 1M tokens)
Input$30.00
Output$180.00
Context & Output
Context Window1.1M tokens
Max Output128K tokens
Capabilities
Categoryflagship
Multimodaltext + image
Fine-tuningNo
StreamingYes
Quick Verdict
Cheaper Input Price
Gemini 2.5 Flash
99.0% cheaper
Cheaper Output Price
Gemini 2.5 Flash
98.6% cheaper
Larger Context Window
GPT-5.4 Pro
+50K tokens
Cost Comparison
Sample workload: 1,000,000 input tokens + 1,000,000 output tokens
Gemini 2.5 Flash
$2.80
$0.3000/1M input + $2.50/1M output
GPT-5.4 Pro
$210.00
$30.00/1M input + $180.00/1M output
Gemini 2.5 Flash is 98.7% cheaper for this workload.
Frequently Asked Questions
Which is cheaper, Gemini 2.5 Flash or GPT-5.4 Pro?
For input tokens, Gemini 2.5 Flash is cheaper at $0.3000 per 1M tokens. For output tokens, Gemini 2.5 Flash is cheaper at $2.50 per 1M tokens. The overall cost depends on your workload's input/output ratio.
What is the context window size of Gemini 2.5 Flash vs GPT-5.4 Pro?
Gemini 2.5 Flash has a context window of 1M tokens, while GPT-5.4 Pro has 1.1M tokens. GPT-5.4 Pro supports a larger context window of 1.1M tokens, which is beneficial for processing longer documents.
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