DeepSeek Flash (V4.1) vs GPT-5.4: Pricing Comparison
Compare pricing, capabilities, and costs for your LLM workloads.
DeepSeek
DeepSeek Flash (V4.1)
Pricing (per 1M tokens)
Input$0.3000
Output$1.20
Cached Input$0.006000
Context & Output
Context Window1M tokens
Max Output384K tokens
Capabilities
Categorybudget
Multimodaltext
Fine-tuningNo
StreamingYes
OpenAI
GPT-5.4
Pricing (per 1M tokens)
Input$2.50
Output$15.00
Cached Input$0.2500
Batch Input$1.25
Batch Output$7.50
Context & Output
Context Window1.1M tokens
Max Output128K tokens
Capabilities
Categoryflagship
Multimodaltext + image
Fine-tuningNo
StreamingYes
Quick Verdict
Cheaper Input Price
DeepSeek Flash (V4.1)
88.0% cheaper
Cheaper Output Price
DeepSeek Flash (V4.1)
92.0% cheaper
Larger Context Window
GPT-5.4
+50K tokens
Cost Comparison
Sample workload: 1,000,000 input tokens + 1,000,000 output tokens
DeepSeek Flash (V4.1)
$1.50
$0.3000/1M input + $1.20/1M output
GPT-5.4
$17.50
$2.50/1M input + $15.00/1M output
DeepSeek Flash (V4.1) is 91.4% cheaper for this workload.
Frequently Asked Questions
Which is cheaper, DeepSeek Flash (V4.1) or GPT-5.4?
For input tokens, DeepSeek Flash (V4.1) is cheaper at $0.3000 per 1M tokens. For output tokens, DeepSeek Flash (V4.1) is cheaper at $1.20 per 1M tokens. The overall cost depends on your workload's input/output ratio.
What is the context window size of DeepSeek Flash (V4.1) vs GPT-5.4?
DeepSeek Flash (V4.1) has a context window of 1M tokens, while GPT-5.4 has 1.1M tokens. GPT-5.4 supports a larger context window of 1.1M tokens, which is beneficial for processing longer documents.
Need more tools?
Explore our complete suite of LLM calculators and comparison tools.