tokevenGPTvsDeepSeek
GPT 5.6 Terra vs DeepSeek V3
Side-by-side comparison of pricing, task quality, and projected cost at higher scale.
Pricing
Side-by-side pricing
GPT 5.6 Terra
Mid-tierDeepSeek V3
Mid-tierInput $/MTok
$2.00
$0.27
Output $/MTok
$12.00
$1.10
Cache discount
90% off
74% off
Context
922K
164K
Quality
Task confidence comparison
Confidence score from zero to one hundred by task type, where higher is better.
Code Generation
64
vs
0
Code Review
84
vs
0
Summarization
64
vs
0
Q&A
92
vs
0
Extraction
75
vs
0
Reasoning
91
vs
0
Classification
89
vs
0
Creative Writing
67
vs
0
GPT 5.6 Terra
DeepSeek V3
Guidance
When to use GPT 5.6 Terra vs DeepSeek V3
Choose GPT 5.6 Terra when...
- -You need a larger context window (922K vs 164K)
- Similar performance; consider provider preference or ecosystem fit.
Choose DeepSeek V3 when...
- -Cost matters: 87% cheaper on input tokens
At scale
Cost at scale
Estimated cost assuming a seventy percent input and thirty percent output token split.
GPT 5.6 Terra
DeepSeek V3
100K tokens
$0.50
$0.05Cheaper
1M tokens
$8.20
$0.52Cheaper
10M tokens
$82.00
$5.19Cheaper
FAQ
When should I use GPT 5.6 Terra instead of DeepSeek V3?
GPT 5.6 Terra and DeepSeek V3 perform similarly across all tracked tasks. Pick based on pricing and provider preference.
Is DeepSeek V3 cheaper than GPT 5.6 Terra?
Yes. DeepSeek V3 input costs $0.27/MTok vs $2.00/MTok for GPT 5.6 Terra, saving 87% on input.
What are the context window sizes for GPT 5.6 Terra and DeepSeek V3?
GPT 5.6 Terra has a 922K 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 5.6 Terra 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.