DeepSeek V4 Flash 0731 vs GPT-5
Side-by-side benchmark comparison across coding, math, reasoning, speed, and pricing.
DeepSeek V4 Flash 0731 by Alibaba wins on 8 of 9 benchmarks against GPT-5 by OpenAI, which leads on 1. This head-to-head comparison covers coding, math, reasoning, speed, and pricing metrics from our benchmark data.
Category-by-Category Breakdown
Coding: In coding, DeepSeek V4 Flash 0731 scores 69.1 on AA Coding Index compared to GPT-5's 37.8, while DeepSeek V4 Flash 0731 scores 1217 on Design Arena ELO compared to GPT-5's 1172, while DeepSeek V4 Flash 0731 scores 1250 on Website Arena ELO compared to GPT-5's 1194.
Reasoning: In reasoning, GPT-5 scores 86.0% on GPQA Diamond compared to DeepSeek V4 Flash 0731's 85.1%, while DeepSeek V4 Flash 0731 scores 72.8% on τ²-Bench Airline compared to GPT-5's 68.4%.
Context: In context, DeepSeek V4 Flash 0731 scores 1.3M on Context Length compared to GPT-5's 400K.
Pricing Comparison
DeepSeek V4 Flash 0731 costs $0.06/1M input tokens and $0.12/1M output tokens, while GPT-5 costs $1.3/1M input and $10.0/1M output. DeepSeek V4 Flash 0731 is the more affordable option for API usage.
Verdict
DeepSeek V4 Flash 0731 leads across the board in affordability, making it the stronger overall choice in this comparison.
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DeepSeek V4 Flash 0731 vs GPT-5 — FAQ
Which is better, DeepSeek V4 Flash 0731 or GPT-5?
DeepSeek V4 Flash 0731 wins on more benchmarks overall (8 vs 1). However, the best choice depends on your specific needs — each model excels in different areas.
How does DeepSeek V4 Flash 0731 compare to GPT-5 for coding?
SWE-bench Verified data is not available for both models. Check the detailed comparison charts above for other coding-related metrics.
Is DeepSeek V4 Flash 0731 cheaper than GPT-5?
Yes, DeepSeek V4 Flash 0731 is cheaper. DeepSeek V4 Flash 0731 costs $0.06/1M input and $0.12/1M output tokens. GPT-5 costs $1.3/1M input and $10.0/1M output tokens.
Which is faster, DeepSeek V4 Flash 0731 or GPT-5?
Output speed data is not available for both models. Check the speed section of the comparison above for available performance data.
What benchmarks does the DeepSeek V4 Flash 0731 vs GPT-5 comparison cover?
This comparison covers 9 benchmarks including GPQA Diamond, Input Cost, Output Cost, Context Length, AA Coding Index, Cached Input Cost, Design Arena ELO, τ²-Bench Airline, and more. Metrics span general intelligence, coding, math, reasoning, speed, and cost categories.