tokevenGPTvsDeepSeek
GPT 5.6 Luna vs DeepSeek Flash
Side-by-side comparison of pricing, task quality, and projected cost at higher scale.
Pricing
Side-by-side pricing
GPT 5.6 Luna
Fast / BudgetDeepSeek Flash
Fast / BudgetInput $/MTok
$0.20
$0.15
Output $/MTok
$1.20
$0.60
Cache discount
90% off
98% off
Context
922K
1M
Quality
Task confidence comparison
Confidence score from zero to one hundred by task type, where higher is better.
Code Generation
62
vs
0
Code Review
68
vs
0
Summarization
57
vs
0
Q&A
85
vs
0
Extraction
74
vs
0
Reasoning
86
vs
0
Classification
91
vs
0
Creative Writing
69
vs
0
GPT 5.6 Luna
DeepSeek Flash
Guidance
When to use GPT 5.6 Luna vs DeepSeek Flash
Choose GPT 5.6 Luna when...
- Similar performance; consider provider preference or ecosystem fit.
Choose DeepSeek Flash when...
- -Cost matters: 25% cheaper on input tokens
- -You need a larger context window (1M vs 922K)
At scale
Cost at scale
Estimated cost assuming a seventy percent input and thirty percent output token split.
GPT 5.6 Luna
DeepSeek Flash
100K tokens
$0.05
$0.03Cheaper
1M tokens
$0.82
$0.28Cheaper
10M tokens
$8.20
$2.85Cheaper
FAQ
When should I use GPT 5.6 Luna instead of DeepSeek Flash?
GPT 5.6 Luna and DeepSeek Flash perform similarly across all tracked tasks. Pick based on pricing and provider preference.
Is DeepSeek Flash cheaper than GPT 5.6 Luna?
Yes. DeepSeek Flash input costs $0.15/MTok vs $0.20/MTok for GPT 5.6 Luna, saving 25% on input.
What are the context window sizes for GPT 5.6 Luna and DeepSeek Flash?
GPT 5.6 Luna has a 922K token context window. DeepSeek Flash has a 1M 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 5.6 Luna and DeepSeek Flash 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.