tokevenGPTvsDeepSeek
GPT 5 Nano vs DeepSeek V3
Side-by-side comparison of pricing, task quality, and projected cost at higher scale.
Pricing
Side-by-side pricing
GPT 5 Nano
Fast / BudgetDeepSeek V3
Mid-tierInput $/MTok
$0.05
$0.27
Output $/MTok
$0.40
$1.10
Cache discount
90% off
74% off
Context
272K
164K
Quality
Task confidence comparison
Confidence score from zero to one hundred by task type, where higher is better.
Code Generation
0
vs
0
Code Review
0
vs
0
Summarization
0
vs
0
Q&A
0
vs
0
Extraction
0
vs
0
Reasoning
0
vs
0
Classification
0
vs
0
Creative Writing
0
vs
0
GPT 5 Nano
DeepSeek V3
Guidance
When to use GPT 5 Nano vs DeepSeek V3
Choose GPT 5 Nano when...
- -Cost matters: 81% cheaper on input tokens
- -You need a larger context window (272K vs 164K)
Choose DeepSeek V3 when...
- Similar performance; consider provider preference or ecosystem fit.
At scale
Cost at scale
Estimated cost assuming a seventy percent input and thirty percent output token split.
GPT 5 Nano
DeepSeek V3
100K tokens
$0.02Cheaper
$0.05
1M tokens
$0.15Cheaper
$0.52
10M tokens
$1.55Cheaper
$5.19
FAQ
When should I use GPT 5 Nano instead of DeepSeek V3?
GPT 5 Nano and DeepSeek V3 perform similarly across all tracked tasks. Pick based on pricing and provider preference.
Is DeepSeek V3 cheaper than GPT 5 Nano?
DeepSeek V3 input costs $0.27/MTok, which is 440% more than GPT 5 Nano at $0.05/MTok.
What are the context window sizes for GPT 5 Nano and DeepSeek V3?
GPT 5 Nano has a 272K token context window. DeepSeek V3 has a 164K token context window.
Go deeper on either model
Per-call cost calculators, provider lineups, and price history for both models on this page.
Other comparisons
How GPT 5 Nano and DeepSeek V3 stack up against the rest of the field.
Track your real costs
Comparisons show estimated costs at list price. The dashboard reveals your real spend and savings.