tokevenClaudevsDeepSeek
Claude Sonnet 4.6 vs DeepSeek Flash
Side-by-side comparison of pricing, task quality, and projected cost at higher scale.
Pricing
Side-by-side pricing
Claude Sonnet 4.6
Mid-tierDeepSeek Flash
Fast / BudgetInput $/MTok
$3.00
$0.15
Output $/MTok
$15.00
$0.60
Cache discount
90% off
98% off
Context
1M
1M
Quality
Task confidence comparison
Confidence score from zero to one hundred by task type, where higher is better.
Code Generation
57
vs
0
Code Review
95
vs
0
Summarization
61
vs
0
Q&A
88
vs
0
Extraction
71
vs
0
Reasoning
85
vs
0
Classification
84
vs
0
Creative Writing
69
vs
0
Claude Sonnet 4.6
DeepSeek Flash
Guidance
When to use Claude Sonnet 4.6 vs DeepSeek Flash
Choose Claude Sonnet 4.6 when...
- Similar performance; consider provider preference or ecosystem fit.
Choose DeepSeek Flash when...
- -Cost matters: 95% cheaper on input tokens
At scale
Cost at scale
Estimated cost assuming a seventy percent input and thirty percent output token split.
Claude Sonnet 4.6
DeepSeek Flash
100K tokens
$0.66
$0.03Cheaper
1M tokens
$6.60
$0.28Cheaper
10M tokens
$66.00
$2.85Cheaper
FAQ
When should I use Claude Sonnet 4.6 instead of DeepSeek Flash?
Claude Sonnet 4.6 and DeepSeek Flash perform similarly across all tracked tasks. Pick based on pricing and provider preference.
Is DeepSeek Flash cheaper than Claude Sonnet 4.6?
Yes. DeepSeek Flash input costs $0.15/MTok vs $3.00/MTok for Claude Sonnet 4.6, saving 95% on input.
What are the context window sizes for Claude Sonnet 4.6 and DeepSeek Flash?
Claude Sonnet 4.6 has a 1M 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 Claude Sonnet 4.6 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.